Articles de revues : « Applied Physic »

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Balota, Elcio Liborio, Oswaldo Machineski et Alexandra Scherer. « Mycorrhizal effectiveness on physic nut as influenced by phosphate fertilization levels ». Revista Brasileira de Ciência do Solo 36, n^o 1 (février 2012) : 23–32. http://dx.doi.org/10.1590/s0100-06832012000100003.

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In recent years, physic nut (Jatropha curcas L.) has attracted attention because of its potential for biofuel production. Although it is adapted to low-fertility soils, physic nut requires soil acidity corrections and addition of a considerable amount of fertilizer for high productivity. The objective of this research was to evaluate the effectiveness of arbuscular mycorrhizal fungi (AMF) (control without AMF inoculation, Gigaspora margarita inoculation or Glomus clarum inoculation) on increasing growth and yield of physic nut seedlings under different rates of P fertilization (0, 25, 50, 100, 200, and 400 mg kg-1 P soil) in greenhouse. The experiment was arranged in a completely randomized, block in a factorial scheme design with four replications. The physic nut plants were harvested 180 days after the beginning of the experiment. Mycorrhizal inoculation increased physic nut growth, plant P concentration and root P uptake efficiency at low soil P concentrations. The P use quotient of the plants decreased as the amount of P applied increased, and the P use efficiency index increased at low P levels and decreased at high P levels. Mycorrhizal root colonization and AMF sporulation were negatively affected by P addition. The highest mycorrhizal efficiency was observed when the soil contained between 7.8 and 25 mgkg-1 of P. The physic nut plants responded strongly to P application, independent of mycorrhizal inoculation.

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Kren, A. P., V. A. Rudnitsky, G. A. Lantsman, M. N. Delendik, N. V. Zinkevich et E. V. Hnutsenka. « Testing of the physical and mechanical properties of cast iron with the help of IFMH-C device ». Litiyo i Metallurgiya (FOUNDRY PRODUCTION AND METALLURGY), n^o 3 (16 octobre 2019) : 65–69. http://dx.doi.org/10.21122/1683-6065-2019-3-65-69.

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The possibility of the application of impact microindentation method for testing the physic and mechanical properties of cast iron using the IFMH-C instrument developed at the Institute of applied physics of the National Academy of Sciences of Belarus was tested. It was established that the method and the instrument allow to estimate such parameters as Brinell hardness in the range of 100–500 HB, elastic modulus from 40 to 200 MPa, as well as to determine the tensile strength of the flake and spheroidal graphite cast irons. The possibility of using the instrument for non-destructive test directly of parts and products in the manufacturing environments is shown.

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Shenxue, Zhang. « Separating coupled physic quantity by potential operator ». Applied Mathematics and Mechanics 18, n^o 11 (novembre 1997) : 1087–92. http://dx.doi.org/10.1007/bf00132802.

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Martin, V., V. Moncada, G. Dunand, Y. Corre, E. Delchambre et J. M. Travere. « Integrated software for imaging data analysis applied to edge plasma physic and operational safety ». Fusion Engineering and Design 86, n^o 4-5 (juin 2011) : 270–78. http://dx.doi.org/10.1016/j.fusengdes.2010.10.004.

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Khan, Asif, Jian Ping Li, Amin Ul Haq, Imran Memon, Sarosh H. Patel et Salah ud. Din. « Emotional-physic analysis using multi-feature hybrid classification ». Journal of Intelligent & ; Fuzzy Systems 40, n^o 1 (4 janvier 2021) : 1681–94. http://dx.doi.org/10.3233/jifs-201069.

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On-time recovery and treatment of disease is always desirable. The use of Machine learning in health-care has grown very fast to diagnosis the different kinds of diseases in the past few years. In such a diagnosis, past and real-time data are playing very crucial role in using data mining techniques. Still, we are lacking in diagnosing the emotional mental disturbance accurately in the early stages. Thus,the initial diagnosis of depression expressively stances a great problem for both,researchers and clinical professionals. We have addressed the said problem in our proposed work using Pipeline Machine Learning technique where people based on emotional stages have been effectively classified into different groups in e-healthcare. To implement Hybrid classification, a well known machine learning multi-feature hybrid classifier is used by having the emotional stimulation in form of negative or positive people. In order to improve classification, an Ensemble Learning Algorithm is used which helps in choosing the more suitable features from the available genres-emotion data on online media. Additionally, Hold out validation method has been to split the dataset for training and testing of the predictive model. Further, performance evaluation measures have been applied to check the proposed system evaluation. This study is done on Genres-Tags MovieLens dataset. The experimental results show that applied ensemble method provides optimal classification performance by choosing the best subset of features. The said results proved the excellency of the proposed system which comes from the choosing most related features selected by the Integrated Learning algorithm. Additionally, suggested approach is used to accurately and effectively diagnose the depression in its early stage. It will help in recovery and treatment of depressed people. We conclude that use of the suggested method is highly suitable in all aspects of e-healthcare for depress stimulation.

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Dhakad, Jyoti, et Pankaj Gupta. « APPLIED ASPECT OF SHADCHAKRAS AND ITS IMPORTANCE IN SHARIR VIGYAN ». International Ayurvedic Medical Journal 8, n^o 9 (23 septembre 2020) : 4456–60. http://dx.doi.org/10.46607/25iamj08092020.

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The Chakra is thought to be an energy point or node in the subtle of body. which is thought to flow among them along pathway called Nadis. There are six primary Chakras namely Muladhara, Swadhithana, Ma-nipura, Anahat, Visudha, Ajna Chakra. Sthana of Muladhara Chakra and Swadhithana Chakra is Ling and Gud which can be correlate with inferior hypogastric and sacral plexus. Sthana of Manipura Chakra is Nabhi and is represented by solar plexus. Hrudiya is the sthana of Anahat Chakra and it is represented by cardiac plexus. Sthana of Visuddha Chakra is kantha and is represented by cervical plexus. Sthana of Ajna chakra is between eyebrow and it is Avyakta (union of Prakriti and Purush) hence not related to any plexus. these are directly related to physiological as well as physic centers whose structures correspond more or less with traditional description.

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Lopez-Jimenez, P. A., G. M. Gil-Duque et Y. A. Garces-GÃ³mez. « Real Problem Solving as a Teaching Strategy for Physics Education : Case Study ». Jurnal Pendidikan IPA Indonesia 10, n^o 1 (31 mars 2021) : 15–23. http://dx.doi.org/10.15294/jpii.v10i1.25669.

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The project presents the application of the stages proposed by Poyla for solving problems in mathematics, which have been adapted in mechanical physic. Critical reading strategies have also been applied resulting in reading physical problems comprehensively. Objectives: To incorporate real problem solving as a teaching strategy in two mechanical physics courses (one experimental and another traditional), in order to characterize the group that applies the problem-solving strategy. To validate the problem-solving strategy in mechanical physics. Methods: Mixed research including analysis and contrast of results obtained from two control groups: one experimental (24 university students of Mechanical Physics) and another traditional (16 university students of Mechanical Physics). The control group approaches the study of the subjects in a traditional way where the problems proposed are solved intuitively and somehow mechanically. The experimental group solves the proposed problems by applying each of the stages of the proposed sequence. The experimental group solves the proposed problems by applying each of the stages of the proposed sequence. This study differs from previous studies in that most are related to problem-solving in mathematics and in this case, we focus on physics with the value of involving elements related to critical reading, which gives a more realistic look of the Physical phenomenon studied from the interpretation of its occurrence and how it impacts the environment, which favors its theoretical understanding and gives meaning to its mathematical modeling.

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Khoukhi, Faiza, Nacer-Eddine Djelali, Salima Kebouche et Mohamed Lamine Gana. « Contribution to the Study of Biotechnological Control Techniques Applied Against Biocorrosion Oil Installations ». Revista de Chimie 72, n^o 3 (29 juillet 2021) : 10–21. http://dx.doi.org/10.37358/rc.21.3.8433.

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The biological activity of oil extracted from green algae has long been known, but evaluation of bimolecular activities contained in this oil on an industrial scale, especially in the oil industry, was the objective of our research project. The first stapes of this study is to extract the essential oil from green algae marine Ulva Lactuca in our region, obtained by extraction/purification method based on hydro distillation and methanol extraction, the work performed at the laboratories of Sonatrach (SH/DTD/AUI/CEM). The second stapes is to evaluate the potential of these algae extracts on microbiologically influenced corrosion. After chemical-physic characterization of two bio naturals products A and B, we test their effectiveness as a bactericide on bacterial corrosion of carbon steel in water contained sulfate reducing bacteria by electrochemical analysis techniques (Open-circuit potential/OCP and Electrochemical Impedance Spectroscopy/EIS).

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Moro, Thiago Carreta, Fabio Roberto Chavarette, Roberto Outa, Igor Feliciano Merizio et Estevão Fuzaro Almeida. « Detection, Location and Quantification of Structural Faults in a Two-Story Building Using the Artificial Immunological System ». Journal of Advances in Applied & ; Computational Mathematics 9 (24 mai 2022) : 49–61. http://dx.doi.org/10.15377/2409-5761.2022.09.4.

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Large buildings and skyscrapers are vulnerable to environmental, temporal, and anthropological stresses, generating wear and tear that can lead to this social and economic impediment's collapse. The technological improvements of the fourth industrial revolution have resulted in changes in the connection between physical space and man, known as the cyber physic model, which necessitates monitoring systems to protect the structural branch and so correct this structural vulnerability. Thus, the structural health monitoring system is the exact measure of the evolution required by the cyber physic model in construction and the protection of the monumental buildings, ensuring not only their economic development but also the safety of society. Therefore, this research work presents the innovative proposal of the cyber-physical structural health monitoring system aimed at buildings and skyscrapers, based on and differentiated by intelligent computing techniques, using the negative selection algorithm to perform the analysis and monitoring of structural integrity, overcoming the existing traditional work. The cyber-physical structural health monitoring system will be applied to experimental data obtained from the shear building model that represents these imposing skyscrapers. An artificial immune system will be developed and used in the decision-making process based on the acquisition and processing of the obtained signals to perform the identification, localization, and quantification of possible structural damage. Observing the results, this work proved to be efficient, robust, and economically feasible, having high performance and overcoming the shortcomings of traditional techniques. It represents the perfect measure of cyber physics in the monitoring of large buildings and skyscrapers.

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Torres, Carlos Moreira Miquelino Eleto, Laércio Antônio Gonçalves Jacovine, Diego de Paula Toledo, Carlos Pedro Boechat Soares, Sabina Cerruto Ribeiro et Maria Cristina Martins. « Biomass and carbon stock in Jatropha curcas L ». CERNE 17, n^o 3 (septembre 2011) : 353–59. http://dx.doi.org/10.1590/s0104-77602011000300009.

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This study aims to quantify the biomass and carbon stock in a crop of physic nut Jatropha curcas in Viçosa-MG at age three years. For biomass quantification, the direct or destructive method was applied to sample plants selected according to height, crown diameter and number of branches. For the determination of dry biomass in the field, the proportionality method was used. The determination of total carbon content was done in the Laboratory of Forest Soils of the Federal University of Viçosa, and the estimation of CO2 equivalent was based on the 3.67 factor. The carbon stock found in the third year of cultivation was 4.182 tC.ha-1 (15.349 tCO2-e.ha-1) and the mean annual increment (MAI) was 1.394 tC.ha-1.year-1. Results revealed that the potential carbon increment in the physic nut crop is similar to values found in other crops and natural forests yet lower than in eucalyptus crops.

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Riajaya, Prima Diarini, Sri Mulyaningsih et Budi Hariyono. « Pengujian Tiga Paket Teknologi Budi Daya Jarak Pagar di Lahan Kering ». Buletin Tanaman Tembakau, Serat & ; Minyak Industri 8, n^o 1 (6 décembre 2016) : 40. http://dx.doi.org/10.21082/bultas.v8n1.2016.40-54.

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Pengujian teknologi budi daya jarak pagar yang tepat sangat diperlukan untuk meningkatkan produktivitas biji jarak pagar hasil rehabilitasi. Penelitian dilaksanakan tiga tahun (2012–2014) di Kebun Percobaan Asem-bagus, Situbondo dengan karakter lahan kering, bertujuan untuk menguji tiga paket teknologi budi daya jarak pagar yang dapat meningkatkan produksi biji jarak pagar. Pengujian paket teknologi dilakukan pada sistem tanam baru IP-3A pada populasi rapat, pertanaman hasil rehabilitasi dengan sambung samping IP-3A dan pangkas IP-3A. Tanaman sela kacang tanah ditanam di antara tanaman jarak pagar. Komponen produksi dan produksi biji jarak pagar diamati saat panen dan diakumulasi per tahun. Pengujian paket teknologi budi daya tanaman jarak pagar pada sistem tanam baru menghasilkan produktivitas biji yang meningkat dari tahun pertama sampai tahun ketiga masing-masing 253,6 kg/ha; 1.277,2 kg/ha; dan 1.640,3 kg/ha. Pengujian paket teknologi budi daya jarak pagar hasil rehabilitasi dengan sistem sambung samping menghasilkan produktivitas biji dari tahun pertama sampai tahun ketiga berturut-turut 436,0 kg/ha, 3.434,5 kg/ha, dan 1.409,1 kg/ha dan produktivitas tanaman sela kacang tanah berturut-turut 960,0 kg/ha, 913,6 kg/ha, dan 1.233,3 kg/ha polong kering. Pengujian paket teknologi budi daya jarak pagar hasil rehabilitasi dengan pangkas menghasilkan produktivitas biji dari tahun pertama sampai tahun ketiga berturut-turut 529,8 kg/ha; 2.460,2 kg/ha; dan 1.567,3 kg/ha dan produktivitas tanaman sela kacang tanah berturut-turut 856,5 kg/ha; 300,46 kg/ha; dan 533,30 kg/ha polong kering. Teknologi budi daya tanaman jarak pagar yang diterapkan disesuaikan dengan kondisi tanaman yang ada. Penggunaan varietas yang dianjurkan yang sesuai dengan agroekosistemnya sangat dianjurkan melalui penanaman tanaman baru atau sambung samping. Tanaman yang telah meng-gunakan varietas baru dan telah melewati umur produktif (tiga tahun) dapat dilakukan pangkas bawah. Development of physic nut as an alternative energy source requires an optimized cultivation technology support. The field research was done in three consecutive years (2012–2014) in Asembagus Experimental Station, Situbondo to test physic nut cultivation technologies to improve productivity. Testing the cultivation technology package was performed on the new planted physic nut IP-3A, crop rejuvenation by grafting with entresIP-3A and pruning the IP-3A clone. Groundnut was planted as intercropwith physic nut, and after groundnut has been harvested, Crotalaria juncea was planted and harvested at the age of 45 days then mulched between physic nut plants. Yield components and yields of physic nut were recorded andaccumu-lated within a year. The application of cultivation technologies on new plating system resulted in agradually increase in seed yield from the first year to the third year consecutively, 253.6 kg/ha, 1,277.2 kg/ha, and 1,640.3 kg/ha. Physic nut IP-3A rejuvenated with grafting produced seeds 436.0 kg/ha at the first year, 3,434.5 kg/ha at the second year, and 1,409.1 kg/ha at the third year, and groundnut yields from first tothird year were 960.0 kg/ha, 913.6 kg/ha, and 1,233.3 kg/ha dry pods respectively. Physic nut IP-3A rejuvenated with pruning system produced seeds 529.8 kg/ha at the first year, 2,460.2 kg/ha at the second year, and 1,567.3 kg/ha at the third year and groundnut yields from first tothirdyear were 856.5 kg/ha, 300.46 kg/ha, and 533.30 kg/ha dry pods consecutively. Thus physic nut cultivation technologies are applied according to the conditions of existing plants. The use of recommended varieties best fit to agro-ecosystem is highly recommended by planting new plants or grafting. It is ideal to take up pruning activities when the plant is no longer productive.

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Gunawan, Indra. « PENGEMBANGAN APLIKASI MOBILE LEARNING FISIKA SEBAGAI MEDIA PEMBELAJARAN PENDUKUNG ». Jurnal Ilmiah Pendidikan Fisika Al-Biruni 3, n^o 1 (27 avril 2014) : 20–26. http://dx.doi.org/10.24042/jpifalbiruni.v3i1.62.

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Abstract: The objective of this research is to create a supporting instructional media in the form of mobile learning of main material for Senior Secondary School students. The created mobile learning was played on mobile phone that supports flash player, mainly Symbian S60 3rd based mobile phone. The method applied in this research was research and development. The first step was limited to the material of heat transfer. The trial of an application was conducted to 2 specialized lecturers, 2 media experts, 2 Physics teachers of Senior Secondary School, and 44 students of Al- Azhar Senior Secondary School, Bandar Lampung. Indicators used to assess the created instructional media were the appropriateness of the content to the purpose, appropriateness of instruction to the technical quality. Marks of the three indicators were above 80% so that the created mobile learning was categorized as very good. Based on the findings, it may be concludedthat the instructional media in the form of mobile learning can be used as a supporting instructional media for Senior Secondary School students to learn Physics subject. Keywords: instructional media, mobile learning, heat transfer, physic subject, and Senior Secondary School.

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Yassin, Kenzemed Kassie, Kibebew Kibret et Tadele Amare. « Effect of Dung Cake Biochar and NP Fertilizers on Growth and Yield of Carrot (Daucus carota L.) and Selected Soil Physico-Chemical Properties ». Turkish Journal of Agriculture - Food Science and Technology 8, n^o 9 (23 septembre 2020) : 1822–32. http://dx.doi.org/10.24925/turjaf.v8i9.1822-1832.3299.

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Biochar as agricultural soil amendment to improve soil physico-chemical properties, crop productivity and sustainable soil fertility management is a well-known practice. A field experiment was conducted to evaluate the effect of biochar on growth and yield components of carrot and selected soil physic-chemical properties. The study was carried by employing a randomized complete block design with factorial arrangement of four level of biochar (0, 4, 8 and 12 tons ha-1) and four level of Nitrogen/Phosphorus (N/P) fertilizer rate (0/0, 60/10, 90/15 and 120/20 kg ha-1) with four replications. Biochar significantly influenced physico-chemical properties of soils, such as bulk density, total porosity, pH, EC, SOC, TN, Av. P and CEC respectively, as compared to control. The results revealed substantial responses to biochar and N/P fertilization on growth and yield components of carrot with increasing level of biochar and N/P fertilizer rate. None of the others yield parameters were significantly affected by the interaction of two factors. From the present study, it can be concluded that dung cake biochar should be applied to enhance and improve soil physical and chemical properties for favourable plant growth.

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Rodrigues, Tiago Mendes, Dilermando Dourado Pacheco, Tatiane Carla Silva, Jair Henrique de Castro, Gildarley Costa da Cruz, Maurício Ferreira Lopes et Rafael Montanari. « Growth and mineral composition of Jatropha curcasL.under phosphate fertilization and soil compaction ». Colloquim Agrariae 17, n^o 4 (12 août 2021) : 14–22. http://dx.doi.org/10.5747/ca.2021.v17.n4.a445.

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The present work aimed to quantify the growth of young physic nut plants submitted to variations in phosphorus (P) and specific masses of a Red Yellow Latosol soil. Previously, a soil sample was collected in the 20 to 40 cm layer, making sure in the laboratory the low availability of P - 1.4 mg dm-3 - to apply the treatments of interest. Doses of 0, 106 and 318 mg dm-3 of P were applied, using the simple superphosphate source; and the soils were compacted until reaching specific soil masses equal to 1.53; 1.72 and 1.91 kg dm-3, in a complete factorial scheme, totaling nine treatments. The cultivation was carried out in pots and the dry biomass of the aerial part of the physic nut and its parts fractionated in the stem, leaves adhered to the stem and senescent leaves were determined. The contents of P, K, Ca, Mg, Cu, Fe, Mn and Zn were determined, and from the dry mass accumulation data, the contents of these minerals in the plants were quantified. The statistical analysis of the data consisted of analysis of variance, Tukey average test and regression analysis. In general, the mineral composition characteristics of the plants showed a more pronounced response to phosphate fertilization compared to the tested physical compression. The maximum estimated mineral content in physic nut plants was 51.78 mg of P; 463.37 mg of K; 201.84 mg of Ca; 124.18 mg of Mg; 76.17 µg of Cu; 4,254.07 µg of Fe; 18,787.15 µg of Mn and 769,97 µg of Zn.

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Taha, Wafaa M., M. S. M. Noorani et I. Hashim. « New Exact Solutions of Ion-Acoustic Wave Equations by (G′/G)-Expansion Method ». Journal of Applied Mathematics 2013 (2013) : 1–11. http://dx.doi.org/10.1155/2013/810729.

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The (G′/G)-expansion method is used to study ion-acoustic waves equations in plasma physic for the first time. Many new exact traveling wave solutions of the Schamel equation, Schamel-KdV (S-KdV), and the two-dimensional modified KP (Kadomtsev-Petviashvili) equation with square root nonlinearity are constructed. The traveling wave solutions obtained via this method are expressed by hyperbolic functions, the trigonometric functions, and the rational functions. In addition to solitary waves solutions, a variety of special solutions like kink shaped, antikink shaped, and bell type solitary solutions are obtained when the choice of parameters is taken at special values. Two- and three-dimensional plots are drawn to illustrate the nature of solutions. Moreover, the solution obtained via this method is in good agreement with previously obtained solutions of other researchers.

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Márquez Peñaranda, J. F., J. R. Cáceres Rubio et J. D. Palacios Pabón. « Physical-mathematical model for determination of variation of internal forces in the simplified analysis of a beam ». Journal of Physics : Conference Series 2102, n^o 1 (1 novembre 2021) : 012010. http://dx.doi.org/10.1088/1742-6596/2102/1/012010.

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Abstract Springs are often taught in subjects of physics such as statics and solid mechanics belonging to civil engineering programs and mechanical engineering. This knowledge can be applied successfully in the modeling of structures and the consequent development of structural analysis. This paper presents the results of an investigation on physic-mathematical models which uses springs to replace complex connective conditions attempting to simplify the structural analysis process. The work focuses on the analysis of beams supported upon masonry walls, applying variations to the span lengths, sections and loads on them and considering realistic variations of the stiffness conditions required in the supports to meet the demands that these variations impose. For this, continuous beams with two spans with three types of section that are supported by walls that support different levels of restriction from different heights of the building of which they are part are modeled. It is concluded that there is an important influence of the slenderness of the beams and the degree of confinement of the supports upon the precision of the simplified model.

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Zhao, Jun Wen, Shu Sen Wu, Guang Ze Dai, Jing Han et Xing Min Huang. « Physic Simulation of Slurry Preparation by Ultrasonic Vibration in Semisolid Metal Processing ». Materials Science Forum 704-705 (décembre 2011) : 1279–83. http://dx.doi.org/10.4028/www.scientific.net/msf.704-705.1279.

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In current research, a series of visualization experiments simulating the action of ultrasonic vibration (UV) in metal slurry preparation process on fluid flow, grain nucleation and growth as well as its interaction with viscosity of fluids were conducted. In these visualization experiments, the metal slurry maker was substituted by a transparent cup while the liquid and semisolid slurry of metal were replaced by other fluids or mixture system with similar characteristics. Scaled-up UV was applied to the liquid or mixture systems. The simulation shows that UV can roll up the particles at the bottom of the cup and make the liquid convection intense below the radiating surface of sonotrode while weak above it. UV can break dendrites rapidly and distribute them in melt. High viscosity reduces the actual power transmitted into liquid, and higher viscosity requires higher inception power of UV.

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Carreta Moro, Thiago, Fábio Roberto Chavarette, Igor Feliciani Merizio et Roberto Outa. « DETECÇÃO DE FALHAS ESTRUTURAIS EM UM PORTICO METÁLICO UTILIZANDO A COMPUTAÇÃO INTELIGENTE ». COLLOQUIUM EXACTARUM 12, n^o 2 (25 août 2020) : 28–37. http://dx.doi.org/10.5747/ce.2020.v12.n2.e316.

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TheMetal Gantriesis one of the main structural compositions of gas stations, bridges and sky spiders. However, such structures are vulnerable to environmental, temporal and anthropological demands, generating wear and tear that can cause these structures to collapse.With the technological advances of the Fourth Industrial Revolution, there was a transformation of the relationship between physical space and man, called the Cyber-Physic model. This technological evolution surpassed the walls of Industries 4.0, and was also established in the civil branch, solving the problems of structural insecurity, reciprocal to the metallic portico through the Structural Health MonitoringTherefore, this research work presents an innovative proposal for the development of a Structural Health Monitoring applied to Metal Gantries with decision making based on Intelligent ComputingWith this, this work seeks not only to implement the Structural Health Monitoringto guarantee safety in metallic frames, but also to optimize its operation with decision making based on the Artificial Immune System, through the Negative Selection Algorithm. Observing the results, this work proved to be efficient, robust and economically viable, having a high performance, representing the perfect Cyber-Physic measure in the monitoring of Metal Gantries and resolution of its structural problems.

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Jaques, Lanes B. A., Ivan R. Carvalho, Vinícius J. Szareski, João R. Pimentel, Cristian Troyjack, Simone M. Dellagostin, Mayara T. Mendonça et al. « Gibberellic Acid Utilization in Seeds and Plants of Beans : Effect on Growth and Seeds Physiological Quality ». Journal of Agricultural Science 11, n^o 2 (15 janvier 2019) : 541. http://dx.doi.org/10.5539/jas.v11n2p541.

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The growth regulators from gibberellins, when applied on plants, might improve physic and physiological features, stimulate cell division and elongation, this study aimed at evaluating the influence of gibberellic acid doses applied exogenously on bean crop through seed treatment, and analyzing its effects on morphological attributes of seedlings and physiological quality of the seeds produced. The experimental design was completely randomized design, with treatments corresponding to the doses: zero (distilled water only), 50, 100 and 200 mg L-1, arranged in four replicates. The use of gibberellic acid in bean seeds did not result in changes on the number of leaves, leaf area, dry mass of leaves and stem. Applications of foliar gibberellic acid potentiated stem height and root dry mass of seedlings.

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Khalil, H. M., Laila K. M. Ali et A. A. Mahmoud. « IMPACT OF APPLIED HUMIC AND FULVIC ACIDS ON THE SOIL PHYSIC-CHEMICAL PROPERTIES AND CUCUMBER PRODUCTIVITY UNDER PROTECTED CULTIVATION CONDITIONS ». Journal of Soil Sciences and Agricultural Engineering 2, n^o 2 (1 février 2011) : 183–201. http://dx.doi.org/10.21608/jssae.2011.55419.

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Saetae, Donlaporn, Thanyaporn Kleekayai, Vijay Jayasena et Worapot Suntornsuk. « Functional properties of protein isolate obtained from physic nut (Jatropha curcas L.) seed cake ». Food Science and Biotechnology 20, n^o 1 (février 2011) : 29–37. http://dx.doi.org/10.1007/s10068-011-0005-x.

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Melhauser, Christopher, Fuqing Zhang, Yonghui Weng, Yi Jin, Hao Jin et Qingyun Zhao. « A Multiple-Model Convection-Permitting Ensemble Examination of the Probabilistic Prediction of Tropical Cyclones : Hurricanes Sandy (2012) and Edouard (2014) ». Weather and Forecasting 32, n^o 2 (21 mars 2017) : 665–88. http://dx.doi.org/10.1175/waf-d-16-0082.1.

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Abstract This study examines a multimodel comparison of regional-scale convection-permitting ensembles including both physics and initial condition uncertainties for the probabilistic prediction of Hurricanes Sandy (2012) and Edouard (2014). The model cores examined include COAMPS-TC, HWRF, and WRF-ARW. Two stochastic physics schemes were also applied using the WRF-ARW model. Each ensemble was initialized with the same initial condition uncertainties represented by the analysis perturbations from a WRF-ARW-based real-time cycling ensemble Kalman filter. It is found that single-core ensembles were capable of producing similar ensemble statistics for track and intensity for the first 36–48 h of model integration, with biases in the ensemble mean evident at longer forecast lead times along with increased variability in spread. The ensemble spread of a multicore ensemble with members sampled from single-core ensembles was generally as large or larger than any constituent model, especially at longer lead times. Systematically varying the physic parameterizations in the WRF-ARW ensemble can alter both the forecast ensemble mean and spread to resemble the ensemble performance using a different forecast model. Compared to the control WRF-ARW experiment, the application of the stochastic kinetic energy backscattering scheme had minimal impact on the ensemble spread of track and intensity for both cases, while the use of stochastic perturbed physics tendencies increased the ensemble spread in track for Sandy and in intensity for both cases. This case study suggests that it is important to include model physics uncertainties for probabilistic TC prediction. A single-core multiphysics ensemble can capture the ensemble mean and spread forecasted by a multicore ensemble for the presented case studies.

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Persichina, Marco, et Bengt Kriström. « Self-selected intervals in psycho-physic experiments and the measurement of willingness to pay ». Journal of Behavioral and Experimental Economics 98 (juin 2022) : 101839. http://dx.doi.org/10.1016/j.socec.2022.101839.

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Juhász, László, et Irén Juhász Junger. « Spectral Analysis and Parameter Identification of Textile-Based Dye-Sensitized Solar Cells ». Materials 11, n^o 9 (5 septembre 2018) : 1623. http://dx.doi.org/10.3390/ma11091623.

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Linearized equivalent electrical-circuit representation of dye-sensitized solar cells is helpful both for the better understanding of the physical processes in the cell as well as for various optimizations of the cells. White-box and grey-box modelling approaches are well-known and they are widely used for standard cell types. However, in the case of new cell types or the lack of deep knowledge of the cell’s physic such approaches may not be applicable immediately. In this article a black-box approach for such cases is presented applied together with spectral analysis. The spectral analysis and the black-box approach were as first validated with a standard glass-based dye-sensitized solar cell and thereafter applied for the characterization of a new type of textile-based dye-sensitized solar cells. Although there are still improvement potentials, the results are encouraging and the authors believe that the black-box method with spectral analysis may be used particularly for new types of dye-sensitized solar cells.

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Thunes, Karl H., Alain Ratnadass, Albert Nikiema et Zaratou Claude. « Pest damage on Jatropha curcas (Euphorbiaceae) : the effect of seedling irrigation in Sahelian Niger ». International Journal of Tropical Insect Science 36, n^o 03 (27 juillet 2016) : 140–45. http://dx.doi.org/10.1017/s1742758416000084.

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AbstractHerbivory by insects and mites on physic nut (Jatropha curcasL.) seedlings was investigated and compared with irrigation in the semi-arid Sahelian Niger, utilizing a randomized complete block design experiment. Three water treatment protocols were applied and the types of damage were recorded. Less than 5% of the seedlings died during the 10-month trial period with sap suckers causing the most damage on the surviving plants. Plants with high production of biomass and leaf cover (foliage) were most strongly positively correlated with irrigation and were also the plants that endured the highest degree of herbivory. The low dieback may indicate that defence mechanisms counteract seedling herbivory and that drought-stressed plants invest more in their defence mechanism system than vital plants.

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Saetae, Donlaporn, et Worapot Suntornsuk. « Functional properties of proteins isolated from phorbol ester-free physic nut (Jatropha curcas L.) seed cake ». Food Science and Biotechnology 21, n^o 4 (août 2012) : 1179–85. http://dx.doi.org/10.1007/s10068-012-0154-6.

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Emeniru, Daniel C., John Neminebor, Justin Ikirigo et Franklin Sogbara. « Perspective View on Sorption Thermodynamics : Basic Dye Uptake on Southern Nigerian Clay ». European Scientific Journal, ESJ 13, n^o 18 (30 juin 2017) : 355. http://dx.doi.org/10.19044/esj.2017.v13n18p355.

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Macroscopic phenomenon like adsorption has a mechanistic tie typical of thermodynamics and its principles. This work examined the thermodynamic parameters for methylene blue (MB) uptake onto modified Ekowe clay (EC). The purified clay was calcined for 4hrs. at 750 oC to obtain Natural Ekowe Clay (NEC). The purified clay was activated (1.6M H2SO4 (aq)) and calcined for 4hrs. at 750 oC obtaining Activated Ekowe Clay (AEC). Thermodynamic study applied the equilibrium data in determining the activation and heats of adsorption parameters. The concave Eyring plot suggests more than one rate-limiting steps coexisting in the sorption. For temperatures: 25, 30 and 40 oC, activation energies (3) for NEC and AEC lie between 2 - 29kJ/mol inferring physisorption. Negative activation enthalpies (ΔH * ) values confirm exothermic activations. The less negative ΔH * values, in compliance with the significant k2 values varying inversely with temperature, suggests high sorption rate. The negative activation entropy explained an associative uptake and the less negative values are attributive to a physical uptake. Negative free activation enthalpy, ΔG * indicated that uptake on the modified EC is spontaneous. High negativity of ΔG * values suggest strong physic-sorption bond. The negative ΔH * , ΔS * and ΔG * values characterize the physisorption of MB onto modified EC. Values of the isoexcess heats (qisox) obtained: 2.67kJ/mol. (NEC) and 2.47kJ/mol. (AEC) agreed with the value range of <80kJ/mol. typical to physic-sorption. This work opines that sorption of MB onto modified EC is a spontaneous exothermic multilayer phenomenon that progresses heterogeneously with continuous decrease in sorption potential and fall in isosteric heat.

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Ravi, Mahalakshmi, Eganathan Palanisami et Parida Ajay. « In vitro regeneration from different ages of petioles of physic nut (Jatropha curcas L.) ». African Journal of Biotechnology 13, n^o 2 (8 janvier 2014) : 265–73. http://dx.doi.org/10.5897/ajb2013.12995.

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Ferrari, Sara, Mitchell Silva, Vittorio Sala, Daniel Berckmans et Marcella Guarino. « BIOACOUSTICS : A TOOL FOR DIAGNOSIS OF RESPIRATORY PATHOLOGIES IN PIG FARMS ». Journal of Agricultural Engineering 40, n^o 1 (31 mars 2009) : 7. http://dx.doi.org/10.4081/jae.2009.1.7.

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Cough is the element for monitoring and diagnosis of respiratory disease cause of mortality and loss of productivity in pig houses. In order to prevent as much as possible the outbreak of such diseases the aim of this research is to describe acoustic features of cough sounds originating from infections due to Actinobacillosis and Pasteurellosis and to compare them with healthy cough sounds provoked by inhalation of citric acid. The acoustic parameters investigated are peak frequency [Hz] and duration of cough signals. The differences resulting from the cough sound analysis confirmed a variability in acoustics parameters according to a state of health or disease in the animals. Sound analysis provides physic acoustic features that can be used as tool to label and detect cough in a automatic monitoring system applied in farms.

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Shaikhutdinova, Aigul Ravilevna, Ruslan R. Safin et Farida V. Nazipova. « Thermal Modification of Wood in Production of Finishing Materials ». Solid State Phenomena 265 (septembre 2017) : 171–76. http://dx.doi.org/10.4028/www.scientific.net/ssp.265.171.

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The ways of wood thermal treatment applied in Russia and abroad and the scopes of thermo wood as a construction material are considered in the article. The technology of thermal treatment of high moisture wood with moisture content of 60% in the environment of saturated steam without preliminary drying, developed by authors, is described. The results of the research of the color scale change of oak wood depending on the processing temperature and treatment duration, and also the influence of thermal treatment on the main mechanical properties of thermally modified wood as the finishing material, in particular on the Ra and Rz roughness parameters are presented. As a result of the conducted research the improvement of final physic mechanical and esthetic characteristics of the material after the processing of wood under this technology is proven.

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Tian, Yu Ping, et Shuang Shuang Kong. « Treatment Project for Wastewater from Automobile Painting ». Applied Mechanics and Materials 209-211 (octobre 2012) : 1986–89. http://dx.doi.org/10.4028/www.scientific.net/amm.209-211.1986.

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In this experiment, the combination of physic-chemical and biological methods was applied. Firstly, degreasing wastewater and painting wastewater were pretreated by chemicals respectively. And the removal rate of CODCr is more than 50% and about 65% respectively. After pretreatment，the effluents together with electrophoresis wastewater were treated by the coagulation-flotation and SBR process. And the removal rate of CODCr reached more than 80%, which achieved primary standards of "Integrated Wastewater Discharge Standard"(GB8978-1996). After the separated pre-treatment, the consuming amount of the chemicals had obviously lowered than the conventional mixing treatment, as well as the sludge. Most importantly, this process ensures good quality of water. So it is feasible economically and technically to use separated pretreatment, air flotation and SBR to treat automotive painting wastewater.

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Febrianti, Teti, Asrul Tsani et Amalia Nur Milla. « Analisis Preferensi Konsumen Terhadap Sayuran Hidroponik Di Kota Sukabumi ». Paspalum : Jurnal Ilmiah Pertanian 7, n^o 1 (1 juin 2019) : 1. http://dx.doi.org/10.35138/paspalum.v7i1.85.

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There is society awerness in helat life style that makes consumer is more selective in choosing consumed vegetable. The hydroponic vegetable product that is free from pesticide becomes an alternative for consumer, which have health life style. The research aims at knowing how consumer preference toward hydroponic vegetable and knowing how consumer attitude toward a vegetable hydroponic attribute that is most consideration in a purchase decision. The research applied a descriptive method. Total respondents that were studied as much as 50 people by applying purposive sampling. Analysis design applied descriptive statistic and attitude analysis of fishbein multi-attribute. The resulting research declares consumer prefer hydroponic vegetable that has fresh level < 3 days, has a physical wide leaf which has no hole, different taste with conventional vegetable, type variety > 3 types, price < 5.000 IDR, and vegetable in the plastic package. The most consumer consideration attribute in purchase decision respectively is vegetable fresh level, leaf physic, package, vegetable taste, price, and type variety. The most vegetable type that is prefered by the consumer in pakcoy.

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Ashraful Alam, Zakaria Ahmed, Neaz Morshed, Pulak Talukder et Taslima Rahman. « Analysis of physio-mechanical properties of pineapple leaf fiber ». International Journal of Life Science Research Archive 3, n^o 2 (30 novembre 2022) : 113–16. http://dx.doi.org/10.53771/ijlsra.2022.3.2.0127.

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The present research demonstrated that different fiber intimate blends allow the broader use of pineapple leaf fiber for the textile and clothing industries. This fiber is obtained from the leaves of pineapple plants by extraction, carried out to separate the cambium and fiber using a decorticator Machine. The physic-mechanical properties such as bundle strength, whiteness, lustre, linear density, breaking load, breaking extension tenacity, textile modulus were determined as per standard method using different testing machine. There is correlation between length, width and thickness where, if the length is higher than width and thickness also higher. Pineapple (PALF) has tremendous mechanical properties and can be applied in making eco-friendly textile goods. Density of PALF is similar to other natural fibers while Textile modulus is very high, and tensile strength is highest among the related natural fibers. These properties are suitable for its application so this pineapple fibers by blending and mixing with other natural fibers and can be produce various types of cloths.

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Silva, Leandro J., Juan C. Campos Rubio, Túlio H. Panzera et Paulo H. R. Borges. « The effect of silica microparticles and maleic anhydride on the physic-mechanical properties of epoxy matrix phase ». Science and Engineering of Composite Materials 20, n^o 3 (1 août 2013) : 203–8. http://dx.doi.org/10.1515/secm-2012-0088.

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AbstractThermoset polymers, especially epoxy resin, have been applied in several industrial applications in which high stiffness and adhesive strength are demanded. On the other hand, epoxy resin is rather brittle and has poor fracture toughness. For this reason, the addition of fibres/particles into thermoset polymer can be used to enhance strength and toughness for several structural applications. This work investigated the addition of silica microparticles and maleic anhydride (as a coupling agent between the phases) into epoxy resin, which will be used as the matrix phase of hybrid biocomposites. A full factorial design was conducted to evaluate the effect of silica microparticles and chemical additive into the epoxy matrix under compressive loadings. Apparent density was also evaluated. Experimental factors such as weight fraction of silica microparticles (0, 20, and 33.3 wt%) and weight fraction of maleic anhydride (0 and 2 wt%) were investigated. The statistical analysis revealed that the main factors ‘chemical additive’ and ‘silica addition’ significantly affected the compressive modulus of the composites.

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Tolochko, Oleg, Tatiana Koltsova, Elizaveta Bobrynina, Andrei Rudskoy, Elena Zemtsova, Sergey Kirichenko et Vladimir Smirnov. « Conditions for Production of Composite Material Based on Aluminum and Carbon Nanofibers and Its Physic-Mechanical Properties ». Nanomaterials 9, n^o 4 (4 avril 2019) : 550. http://dx.doi.org/10.3390/nano9040550.

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Aluminum-based metallic matrix composites reinforced by carbon nanofibers (CNFs) are important precursors for development of new light and ultralight materials with enhanced properties and high specific characteristics. In the present work, powder metallurgy technique was applied for production of composites based on reinforcement of aluminum matrices by CNFs of different concentrations (0~2.5 wt%). CNFs were produced by chemical vapor deposition (CVD) and mechanical activation. We determined that in situ synthesis of carbon nanostructures with subsequent mechanic activation provides satisfactory distribution of nanofibers and homogeneous composite microstructure. Introduction of 1 vol% of flux (0.25 NaCl + 0.25 KCl + 0.5 CaF2) during mechanic activation helps to reduce the strength of the contacts between the particles. Additionally, better reinforcement of alumina particles and strengthening the bond between CNFs and aluminum are observed due to alumina film removal. Introduction of pure aluminum into mechanically alloyed powder provides the possibility to control composite durability, plasticity and thermal conductivity.

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Sobotova, Lydia, Miroslav Badida, Jan Kmec, Miroslav Gombar et Daniel Kucerka. « The Simulation of the Electrolyte Temperature Effect on the Value Change of the Microhardness of Anodic Alumina Oxide Layers ». Applied Mechanics and Materials 752-753 (avril 2015) : 30–34. http://dx.doi.org/10.4028/www.scientific.net/amm.752-753.30.

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In order to improve the mechanical properties of the layer deposited by anodic oxidation of aluminum on the material EN AW-1050 H24, in the contribution was investigated the microhardness of the deposited layer as a function of the physic-chemical factors affecting in the process of anodic oxidation at the constant anodic current density J = 3 A.dm-2 in electrolyte formed by sulfuric acid and oxalic acid, with the emphasis on the influence of electrolyte temperature in the range – 1,78 °C to 45,78 °C. The model of the studied dependence was compiled based on mathematical and statistical analysis of matrix from experimental obtained data from composite rotation plan of experiment with five independent variable factors (amount of sulfuric acid in the electrolyte, the amount of oxalic acid in the electrolyte, electrolyte, anodizing time and applied voltage).

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Gomez Isidro, Sully, et Viviana Lucía Gómez-Ríos. « Baseflow analysis using master recession curves and numerical algorithms in mountain basins : Suratá's river and Oro's river (Santander, Colombia) ». DYNA 83, n^o 196 (20 avril 2016) : 213–22. http://dx.doi.org/10.15446/dyna.v83n196.53222.

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The interaction between groundwater inflow and outflow is complex in streams connected from aquifers located in fractured rock media. The recession curves of hydrographs provide information about these hydrogeological processes and they are useful to assess an insight in the storage-discharge relationship in subsurface reservoirs. In this study, the physic base and the nonlinearity relationship of storagedischarge were analyzed through a mathematical expression which describe a master recession curve. Four numerical algorithms were applied to estimate the baseflow of the Suratá's River basin and the high Oro's River basin, Santander-Colombia. In both cases, master recession curves showed the nonlinearity relationship in storage-discharge. Furthermore, the exponent values and the proportionality constants give additional information about the aquifers in contact to the river and the special scale of recharges that may occur in these aquifers.

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Radu, Maria-Crina, Raluca Tampu, Valentin Nedeff, Oana-Irina Patriciu, Carol Schnakovszky et Eugen Herghelegiu. « Experimental Investigation of Stability of Vegetable Oils Used as Dielectric Fluids for Electrical Discharge Machining ». Processes 8, n^o 9 (18 septembre 2020) : 1187. http://dx.doi.org/10.3390/pr8091187.

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One main drawback of electrical discharge machining (EDM) is related to the dielectric fluid, since it impacts both the environment and operator health and safety. To resolve these issues, recent research has demonstrated the technical feasibility and qualitative performance of vegetable oils as substitutes for hydrocarbon-based dielectric and synthetic oils in EDM. However, due to the higher content of unsaturated fatty acids, vegetable oils lose their stability, due to several factors such as heating or exposure to light or oxygen. The present study is a first attempt to analyze the extent to which the physic-chemical properties of vegetable oils change during EDM processing. Refractive index, dynamic viscosity and spectra analyses were conducted for sunflower and soybean oils. The results revealed that, under the applied processing conditions, no structural changes occurred. These findings are very promising from the perspective of EDM sustainability.

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Kurcubic, Vladimir, Jelena Vujic, Mirela Ilicic, Danijela Vranic, Slavica Veskovic-Moracanin et Pavle Maskovic. « Effect of plant extracts Kitaibelia vitifolia on antioxidant activity, chemical characteristics, microbiological status and sensory properties of Pirotski kachkaval cheese ». Chemical Industry 69, n^o 1 (2015) : 85–93. http://dx.doi.org/10.2298/hemind140129025k.

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The aim of our study was to evaluate the impact of cheese (Pirotski kachkaval) fortification by polyphenols attributed to Kitaibelia vitifolia ethanol herb extract, applied in two different manners (added to the cheese curd after texturizing or sprayed on surface of cheese). Investigation of the used antioxidant effects of polyphenols, physic-chemical composition, microbiological quality and sensory properties of Pirotski kachkaval was undertaken. Antioxidant activity of conventional and fortified cheese was evaluated by five contemporary and compatible methods, and revealed a slight emphasis on phenol-linked antioxidant activity of fortified samples of cheese in comparison to samples of the control group. Fortified Pirotski kachkaval had higher sensory evaluation scores than the controls. Statistically significant (P < 0.05) changes were observed in moisture content and total solids of control and modified series of cheese, but other parameters did not differ significantly (P > 0.05).

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ARTHAGAMA, I. DEWA MADE, et I. MADE DANA. « Evaluasi Kualitas Tanah Sawah Intensif dan Sawah yang Dikonversikan untuk Kebun di Subak Kesiut Kerambitan Tabanan ». Agrotrop : Journal on Agriculture Science 10, n^o 1 (29 mai 2020) : 1. http://dx.doi.org/10.24843/ajoas.2020.v10.i01.p01.

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Evaluation Quality of Intensif Paddy Soils and Conversion Paddy Soils to Garden at Subak Kesiut Kerambitan Tabanan. This experiment conducted to evaluate intensif Paddy Soils and conversion paddy soils to garden at SubakKesiut Kerambitan Tabanan. There were two steps applied in this study including field survey to determine the research area and points soils sampling; analysis soils properties are: physic, chemistry and soils biology for get minimum data set to determine the soil quality at Laboratory of Soils and Enveronment Faculty of Agriculture Unud. The results of this study showed: the soil quality of intensif paddy soils is better than conversion paddy soils to garden, that showed with SQR at intensif paddy soil is 18 and at conversions paddy soil is 25. The limiting faktor at conversion paddy soils to garden is P available, there are less than at intensif paddy soils.

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Sokolova, Irina. « Energy efficiency of external walls of buildings with aggressive production environments ». E3S Web of Conferences 91 (2019) : 02038. http://dx.doi.org/10.1051/e3sconf/20199102038.

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Much attention is paid now to the energy efficiency of external enclosing structures. The study of this issue is especially important for external walls, operating in an aggressive environment. The author proposed the light polymer-silicate shungizit concrete (LPSC) for exterior walls of buildings with acidic, wet-gas environments. Shungizite as a lightweight aggregate was chosen because of its high acid resistance. The experience of using shungizit concrete on cement binder for structures of residential, public and industrial buildings was olso taken into account. Previously, the author conducted studies on the physic-mechanical properties of LPSC with a density of 1000 -1200 kg/m3. Studies have shown that this material can be applied to the exterior walls of buildings with acidic, wet-gas environments. This article presents the results of studies on the energy efficiency of walls made of LPSC.

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Afrakhteh, Sajjad, Mohammad-Reza Mosavi, Mohammad Khishe et Ahmad Ayatollahi. « Accurate Classification of EEG Signals Using Neural Networks Trained by Hybrid Population-physic-based Algorithm ». International Journal of Automation and Computing 17, n^o 1 (6 novembre 2018) : 108–22. http://dx.doi.org/10.1007/s11633-018-1158-3.

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Fartas, Najia, Bouchta El Fellah, Mohamed Mastere, Brahim Benzougagh et Mohammed El Brahimi. « Physico-Chemical Characterization and Evaluation of Soil Structural Stability in the Oued Joumouaa Watershed (Western Prerif) ». Iraqi Geological Journal 55, n^o 2A (31 juillet 2022) : 63–78. http://dx.doi.org/10.46717/igj.55.2a.5ms-2022-07-21.

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Soil degradation leads to alteration of ecological and economic functions due to a decrease in productivity and quality of the soil. The aim of the present study was to assess soil degradation by identifying physic-chemical soil factors in order to identify soil properties that could be used as indicators for future soil quality conservation programs and their relationship with soil erosion risk in the Oued Joumouaa watershed. Soil samples from three locations with, on average, from 0 to 20 cm depth. distributed on three stations, in a random way. Using discriminant and factor analyses, principal soil factors were identified. The results of the physico-chemical analyses (texture, pH, organic matter, calcium carbonate, assimilable phosphorus, exchangeable potassium, structural stability), show that the soils have silty-clayey-sandy textures, moderately basic pH (7.8 to 8), carbonate rate which varies from (16.86 to 20.36). The organic matter varies from 1.73 to 3.94. The assimilable phosphorus varies from 13.46 to 14.85, The structural stability of these soils under water revealed that they are generally unstable, with average weight diameters ranging from 0.56 (station 1) to 1.1 (station 2) and 1 (station 3). Therefore, it is suggested that the present study can be applied to projects with special relevance to soil scientists, environmental scientists and planning agencies that can use the present study as baseline data to combat land degradation and conserve land resources in an efficient manner.

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Moradi, Ali, Javad Tavakolifaradonbe et Britt M. E. Moldestad. « Data-Driven Proxy Models for Improving Advanced Well Completion Design under Uncertainty ». Energies 15, n^o 20 (11 octobre 2022) : 7484. http://dx.doi.org/10.3390/en15207484.

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In order to improve the design of advanced wells, the performance of such wells needs to be carefully assessed by taking the reservoir uncertainties into account. This research aimed to develop data-driven proxy models for the simulation and assessment of oil recovery through advanced wells under uncertainty. An artificial neural network (ANN) was employed to create accurate and computationally efficient proxy models as an alternative to physics-based integrated well–reservoir models created by the Eclipse® reservoir simulator. The simulation speed and accuracy of the data-driven proxy models compared to physic-driven models were then evaluated. The evaluation showed that while the developed proxy models are 350 times faster, they can predict the production of oil and unwanted fluids through advanced wells with a mean error of less than 1% and 4%, respectively. As a result, the data-driven proxy models can be considered an efficient tool for uncertainty analysis where several simulations need to be performed to cover all possible scenarios. In this study, the developed proxy models were applied for uncertainty quantification of oil recovery from advanced wells completed with different types of downhole flow control devices (FCDs). According to the obtained results, compared to other types of well completion design, advanced wells completed with autonomous inflow control valve (AICV) technology have the best performance in limiting the production of unwanted fluids and are able to reduce the associated risk by 91%.

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Guo, Wei, Bin Gao, Gui Yun Tian et Dan Si. « Physic perspective fusion of electromagnetic acoustic transducer and pulsed eddy current testing in non-destructive testing system ». Philosophical Transactions of the Royal Society A : Mathematical, Physical and Engineering Sciences 378, n^o 2182 (14 septembre 2020) : 20190608. http://dx.doi.org/10.1098/rsta.2019.0608.

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Comprehensive non-destructive testing (NDT) for pipelines is a critical and challenging task. This paper proposes a novel physic perspective fusion NDT method of electromagnetic acoustic transducer (EMAT) and pulsed Eddy current testing (PECT) for detecting hybrid defects. This transceiver-integrated fusion sensor structure can simultaneously excite ultrasound and pulsed eddy current. Therefore, the generated ultrasound is applied to detect deep defects, while the eddy current detects surface defects. The theoretical derivation of EMAT and PECT fusion mechanism has been developed for analysis and interpretation of the results. In addition, numerical simulation on the detection of hybrid defects including surface defects with different width, depth and multiple bottom-thinning defects has been conducted. Experiments on both ferromagnetic and non-ferromagnetic material verify the feasibility of composite detection. Finally, tests have been validated on pipeline with weld defects, and the results show that the composite inspection method is capable of monitoring thickness variations and inspecting surface defects. This article is part of the theme issue ‘Advanced electromagnetic non-destructive evaluation and smart monitoring’.

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Suranto, S., et Much Djunaidi. « Marketing Development Model of Goyor Woven Fabric Increases Consumer Buying Interest in Pandemic Covid-19 Era : Study at Sragen Goyor Industry Center ». Jurnal Ilmiah Teknik Industri 20, n^o 1 (2 juillet 2021) : 61–70. http://dx.doi.org/10.23917/jiti.v20i1.13920.

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Goyor woven fabric is a product of the creative industry, a micro, small and medium enterprises (SMEs) product in weaving. Goyor woven fabric is developed industrial center locations at Kalijambe, Miri, Plupuh, Sragen. Goyor woven fabric, as a result of weaving craft, is a handmade woven fabric through a non-machine loom (ATBM). The study aims to raise the potential of woven fabric products so that woven fabric products (goyor) become attractive to consumers and increase consumer buying interest. The strategy applied to increase sales volume and increase consumer buying interest is through marketing models by marketing mix approaches 9P (products, prices, promotions, distribution, people, physic, process, public relation, and power) to consumer buying interest. This research is beneficial as a marketing development model of market-oriented goyor Woven Fabric. The research objectives are to (a) analyze woven fabric goyor products based preferred by consumers; (b) analyze the market-oriented fabric goyor marketing development model in pandemic era covid 19. The research method uses explanatory sequential methods with a research population of 15 entrepreneurs who understand Kalijambe, Miri, and Plupuh goyor woven fabric products. Data analysis Likert scale using preferences costumers while increasing product marketing uses a participatory approach. The research results showed that goyor fabric product preferred by consumers has the characteristics of using a marketing mix approach as follows: (1) product variables; (2) variable prices; (3) promotion variables; (4) place variables, (5) people, (6) physic, (7) process, (8) public relation and (9) power). The concept of strategy empowerment and market-oriented product marketing empowerment model is said to be feasible and reasonable. It can be used as a marketing development model in increasing interest in buying goyor products in the pandemic era covid 19.

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Medvedev, V. V. « Continuality and dyscretivity of soils for fields : applied consequences for agriculture ». Fundamental and Applied Soil Science 16, n^o 1-2 (18 mars 2015) : 11–25. http://dx.doi.org/10.15421/041502.

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The continuality is considered as the fundamental feature of a soil cover consisting gradual change of its properties in space, synchronized with changes of soil factors formation, and dyscretivity is mainly artificial the introduced category caused by classification appreciably various genetic and agritechnologic divisions. The soil cover is studied basically as continual and is very weak as a discrete body, especially if it to consider at an original average hierarchical level (mean spatial heterogeneity of many soil properties within the limits of polypedon, or, in a context of present article, – fields of a crop rotation). Certainly, it brakes successful development of representations about a soil horizontal structure and, as consequence, practical appendices of heterogeneity to precise agriculture. Zonal systems of agriculture are based on an environment of a zone and in essence reflect average continual features of a soil cover. Precise systems are under construction on the basis of dyscretivity of a soil cover – new soil borders which are used for allocation of soil contours within the limits of a field for differentiation of ways and intensity of tillage, dozes of fertilizers application and chemical ameliorants. In article attempt to use the established representations about spatial features of soil properties for improvement of modern practice of agriculture, especially precise agriculture, including ways of a finding of the area of contours of a field with different parameters of fertility are made. As objects 6 fields are used, three from which are located to Polesye, two – in Forest-Steppe and one – in Steppe. Use of principles of precise agriculture and inspection of display soil properties of fields on a regular grid has allowed to divide fields into contours with three levels of fertility, one of which is characterized by properties optimum or close to them, that allows to refuse (or it is essential to reduce) from application of tillage, fertilizer or chemical ameliorants. Precise agriculture – perspective soil – and energy saving the system reflecting heterogeneity of a field of a crop rotation, should replace traditional zonal systems of agriculture. Thus, on the basis of research of various displays of heterogeneity - continual when properties of soil in space change gradually, synchronously to factors of soil formation, and discrete when properties of soil change in the limits of small areas necessity of introduction of new borders for the soil cover, based on horizontal studying of soil properties, – morphological, physical, physic-mechanical and others is proposed. By means of borders the configuration of industrial working sites for the differentiated application of agritechnological operations is proved.

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TENKAYALA, DR SHOBHA RANI, Pagadala R. Sougandhi, Mekala Reddeppa, Sapara Sekhar Harini et R. Gangadhara. « GREEN SYNTHESIS AND CHARACTERIZATION OF SILVER NANO PARTICLES BY USING PSIDIUM GUAJAVA LEAF EXTRACT ». Journal of Drug Delivery and Therapeutics 8, n^o 5-s (1 octobre 2018) : 301–5. http://dx.doi.org/10.22270/jddt.v8i5-s.2025.

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In this study, rapid, simple approach was applied for synthesis of silver nanoparticles by using Psidium guajava aqueous leaf extract. The plant extract acts as both reducing agent and capping agent. The green synthesized silver nanoparticles were characterized by using physic-chemical techniques viz, UV-Visible spectroscopy, Fourier Transform Infrared Spectrophotometer [FTIR], Particle size analyser and Scanning electron microscopy. UV-Visible spectrophotometer showed absorbance peak in the range of 419nm.The compounds responsible for silver ions and the functional groups present in plant extract were identified and investigated by FTIR technique. The characterization data reveals that the particles were in crystalline in nature with an average size of 62nm. The silver nanoparticles (Ag NPs) were rapidly synthesized using aqueous extract of guava leaf with AgNO3 solution within 15min at room temperature, without the involvement of any hazardous chemicals. Keywords: Nano particles, green synthesis, Silver, Psidium guajava and reducing agents.

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Elfi Anis Saati, Sri Winarsih, Ratih Maulidha Aryani et Devi Dwi Siskawardani. « Application of Carrageenan and Non-Alcoholic Anthocyanin Extraction of Rosa sp. on The Physic-Chemical Characteristics of Annona muricata L. Fruit Leather ». Halalpshere 1, n^o 2 (26 juillet 2021) : 64–75. http://dx.doi.org/10.31436/hs.v1i2.23.

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Fruit leather is a healthy food with higher nutrition, but it has low plasticity. Annona muricata L. has potential as raw material due to high fibre and low pectin. Rosa sp. acts as the antioxidant and anthocyanin sources, while carrageenan as plasticity improvement. This research aimed to analyse the interaction of anthocyanin (10%; 15%; 20%) and carrageenan (0.1%; 0.2%; 0.3%) to the fruit leather physic-chemical characteristics. The research consisted of 2 main steps: (i) anthocyanin extraction from Rosa sp. used aquadest:citric acid (98:2) at 85°C for 30 mins. (ii) Application of anthocyanin on fruit leather. Randomised completed block design factorial was applied. The best fruit leather resulted by combination of anthocyanin 15% and carrageenan 0.3% with pH 3.65, water content 13.08%, antioxidant activity 87.61%, TDS 26.03°Brix, total acid titrated 4.23%, lightness (L) 41.07, redness (a+) 7.03, and yellowness (b+) 2.63.

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Djurovic, Rada, Jelena Gajic-Umiljendic et Tijana Djordjevic. « Effects of organic matter and clay content in soil on pesticide adsorption processes ». Pesticidi i fitomedicina 24, n^o 1 (2009) : 51–57. http://dx.doi.org/10.2298/pif0901051d.

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The effect of organic matter and clay content on the adsorption of atrazine, acetochlor, clomazone, pendimethalin and oxyfluorfen in soil samples was studied. In order to determine whether and to what degree different soil properties affect the process of determination of selected pesticides, three soils with different clay and organic matter contents were used. An optimized liquid-solid extraction procedure followed by SPME measurement was applied to analyze the selected pesticides in soil samples. Detection and quantification were done by gas chromatography-mass spectrometry (GC/MS). Relative standard deviation (RSD) values for multiple analyses of soil samples fortified at 30 ?g/kg of each pesticide were below 19%. Limits of detection (LODs) for all compounds studied were less than 2 ?g/kg. The results indicate that soils with different physic-chemical properties have different effects on the adsorption of most pesticides, especially at higher concentration levels.

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