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Articles de revues sur le sujet « Bunches »

Auteur : Grafiati

Publié le 7 juin 2025

Mis à jour le 2 août 2025

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1

Lachynov, S. B., and N. A. Vinokurov. "Developing of 540° magnetic buncher." Journal of Instrumentation 18, no. 06 (2023): P06011. http://dx.doi.org/10.1088/1748-0221/18/06/p06011.

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Abstract Generation of short electron bunches with high peak current is of great importance for different research and technological applications. Such generation requires a special bunching magnetic system. This paper describes a new scheme of a magnetic buncher for relativistic electrons. The buncher provides a strong dependence of the time of flight on the particle energy and thus is capable to bunch relatively long bunches to short ones.

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Lachynov, S. B., N. A. Vinokurov, and V. G. Tscheskidov. "The 540° Magnetic Buncher." SIBERIAN JOURNAL OF PHYSICS 19, no. 3 (2024): 64–71. http://dx.doi.org/10.25205/2541-9447-2024-19-3-64-71.

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Generation of short electron bunches with high peak current is of great importance for different research and technological applications. Such generation requires a special bunching magnetic system. The paper is an overview of the development of a new magnetic buncher. It consists of the buncher scheme description, the results of magnetic field modeling and reference particle trajectory calculation for the relativistic electrons, and of the description of bending magnets. The buncher provides a strong dependence of the time of flight on the particle energy and thus is capable to bunch relative

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Rylov, Yu A. "Computer Simulation of Electron-Flow Bunching in the Pulsar Magnetosphere." International Astronomical Union Colloquium 128 (1992): 319–21. http://dx.doi.org/10.1017/s0002731600155416.

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Bunch curvature emission is one of the well known pulsar radio emission mechanisms. The problem of bunch formation is very important for understanding the pulsar radio emission mechanism. In the axisymmetric pulsar magnetospheric bunching arises in the outflow channel as a result of interaction between moving electrons (DP) and captured ones (SP) (Rylov 1988). A numerical simulation was undertaken to determine how strongly the electron flow is bunched. The bunching appears to be very strong. It can be treated as a gas of electron bunches rather than small fluctuations of the electron flow. The

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Guérios, Inês Thomaz, Francine Lorena Cuquel, and Luiz Antônio Biasi. "Bagging of bunches and protected production in ‘Niagara Rosada’ vineyard." Pesquisa Agropecuária Gaúcha 27, no. 1 (2021): 90–98. http://dx.doi.org/10.36812/pag.202127190-98.

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Vineyards of ‘Niagara Rosada’ have shown great productive potential. However, the grape production has been affected by factors related to climate adversities. Thus, this study aimed to evaluate the effect of plastic cover and bagging of bunches of ‘Niagara Rosada’, in Almirante Tamandaré, PR, Brazil. Plastic cover used was of polyethylene with 250 µm of thickness and bagging of the bunches with white non-woven fabric bags. The treatments were: without plastic cover over the vineyard and without bagging of bunches (control); with plastic cover over the vineyard and without bagging of bunches;

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J, Satisha, Sampathkumar Pamu, and Kaushal Kishor Upreti. "Optimization of GA3 concentration for improved bunch and berry quality in grape cv. Crimson Seedless (Vitis vinifera L)." Journal of Horticultural Sciences 16, no. 2 (2022): 177–84. http://dx.doi.org/10.24154/jhs.v16i2.1072.

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Crimson Seedless is a coloured seedless grape, gaining popularity in India for its attractive colour, bunch and berry quality with better shelf life. In cultivation of any seedless grape variety, application of GA3 at different stages is very much essential to produce good quality berries and bunches. However, this variety is highly sensitive to excess application of GA3 and practicing GA3 schedule similar to that of Thompson Seedless grapes adversely affects bunch quality. Hence, there was a need to standardize mild dose of GA3 just for rachis elongation which will help to reduce bunch compac

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Siregar, Mansur, Devi Andriani Luta, and Najla Lubis. "Increasing the Growth and Quality of Oil Palm Seeds (Elaeis guineensis Jacq) by Selecting the Position of Fruit Bunches and Dormancy Breaking Methods." JURNAL AGRONOMI TANAMAN TROPIKA (JUATIKA) 5, no. 2 (2023): 311–21. http://dx.doi.org/10.36378/juatika.v5i2.3112.

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Oil palm reproduces by seeds and will germinate to grow further into plants. This study aims to determine the effect of the position of fruit bunches and various methods of breaking dormancy on the germination of coconut seeds palm. This study used a completely randomized design (CRD) factorial consisting of 2 factors with 18 combinations and 2 replications. The first factor is the position of the fruit on the oil palm bunch which consists of 6 positions of the fruit bunch, as follows: the base of the inner fruit bunch (PT), the base of the outer fruit bunch (PL), the middle of the inner fruit

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Fogaça, Marco Aurélio de Freitas, Izaias Boff, Marcio Nilton Lima Mautone, Marcus Toebe, Cristina Valéria Souza Cantanhede, and Antônio Romagna. "Épocas de desponte de cachos na variedade de uva rainha Itália (Vitis vinifera L.), produzida em ambiente protegido na Serra Gaúcha." Revista Agraria Academica 4, no. 3 (2021): 25–32. http://dx.doi.org/10.32406/v4n3/2021/25-32/agrariacad.

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The objective of the work was to evaluate the production and quality of the cultivar Italia produced in a protected environment, submitted to three seasons of topping of bunch. The experiment was carried out in 2015, in Caxias do Sul - RS. The experimental design used blocks at random with four treatments, being: without topping of bunch, topping of bunch in pre-flowering, topping of bunch in full bloom, topping of bunch in post-blooming. The variables analyzed were: production per plant, bunch weight, bunch length, berry diameter and number of bunches soluble solids and titratable acidity. Re

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Marmorshtein, A. A., D. M. Tsiku, A. V. Fisyura, and V. S. Petrov. "EFFECT OF DIFFERENT LOADS OF BUSHES WITH SHOOTS AND BUNCHES ON UVOLOGICAL INDICATORS OF CENTENNIAL SEEDLESS GRAPEVINE VARIETY." Russian Vine 22 (December 23, 2022): 27–33. http://dx.doi.org/10.32904/2712-8245-2022-22-27-33.

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The article considers the issue of the influence of the different loads of bushes with shoots and bunches on the uvological indicators of bunches of Centennial Seedless grapevine variety in the agroecological conditions of the Central viticulture zone of the Krasnodar region. The Centennial Seedless variety is cultivated in a covering and grafted culture on a SO4 rootstock. Drip irrigation. The soils are low-humus, leached powerful chernozems. The average air temperature of the winter months (December-February) of the studied 2021/2022 was 2.3 °C higher than the climatological norm of 1991‒202

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Zerbe, B. S., and P. M. Duxbury. "Realizing laminar-like flow in charged bunches with density evolution equations." International Journal of Modern Physics A 34, no. 36 (2019): 1942042. http://dx.doi.org/10.1142/s0217751x19420429.

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In the ultra-fast electron microscopy community, electron bunches with much smaller longitudinal widths than transverse widths are emitted from the cathode surface. The community has believed that these bunches evolve to a uniform ellipsoid, but recent simulations by our group and others suggest that if the bunch has an initially transverse Gaussian profile, a ring-like density “shock” emerges at the median of the bunch during evolution. To explain these results, we generalized Reed’s 1D fluid model of charged bunch expansion to cylindrical and spherical geometries demonstrating such a shock e

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Petrov, Valeriy Semionovich, Andrey Viktorovich Fisyura, and Anna Aleksandrovna Marmorshtein. "THE LOAD NORM OF SHOOTS AND BUNCHES OF PODAROK NESVETAYA GRAPE BUSHES." Fruit growing and viticulture of South Russia 5, no. 83 (2023): 94–106. http://dx.doi.org/10.30679/2219-5335-2023-5-83-94-106.

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The table grape variety Podarok Nesvetaya has a high production responsiveness to the optimization of the structural elements of the bush. The purpose of the research is to study the effect of the differentiated load of bushes with shoots and bunches on the agrobiological properties of grapes, to substantiate the variety-oriented technology for the Podarok Nesvetaya grape variety. The research was carried out in the Central Agroecological viticulture zone of the Krasnodar region in covered culture with drip irrigation. Planting scheme is 3.5×3.5 m. The soils are low-humus, leached powerful che

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Tenkouano, A. "Persistence and Horticultural Value of Inflorescence Dichotomy in Plantain." HortScience 35, no. 5 (2000): 933–36. http://dx.doi.org/10.21273/hortsci.35.5.933.

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This study aimed to assess the persistence and horticultural value of bunch dichotomy in plantain. Meristematic tissue was collected from a plant of the cultivar UNN showing a double-bunch phenotype and cultured in vitro. Ninety-five seedlings were acclimatized for 6 to 8 weeks in a greenhouse, prior to transfer to the field. Field evaluation was carried out at three experimental farms (Abuja, Ibadan, and Onne) of the International Institute of Tropical Agriculture, in Nigeria. Micropropagated plants of two plantain accessions, `Agbagba' and `Obino l'ewai', that produce single bunches were inc

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Saputra, Arkam, Fauzy Lebang, and Tamrin Mallawangeng. "Pengaruh Penambahan Abu Tandan Sawit Dan Variasi Fly Ash Terhadap Nilai CBR Dan Permeabilitas Tanah." Jurnal Penelitian Teknik Sipil Konsolidasi 1, no. 3 (2023): 232–40. http://dx.doi.org/10.56326/jptsk.v1i3.3274.

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Soft clay soil has a relatively low subgrade bearing capacity and relatively large subgrade compression and lasts for a relatively long time so that it becomes a major problem in the development of transportation infrastructure. The aim of the research is to determine the effect of a mixture of palm bunch ash and variations of fly ash on the CBR value of clay soil and to determine the effect of a mixture of palm bunch ash and variations of fly ash on the permeability of clay soil. One of the efforts to improve soft clay soil is by adding palm bunch ash as a stabilizing agent on the soil. This

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Salampak, Salampak, Sustiyah Sustiyah, Moch Anwar, Siti Unvaresi Misonia Beladona, Galih Hartoko, and Meylinda Dwi Wahyuningtyas. "Pengaruh Pemberian Porasi Janjang Kosong dan Dolomit terhadap Pertumbuhan dan Hasil Tanaman Bayam Merah." JURNAL AGROTROPIKA 23, no. 2 (2024): 313. https://doi.org/10.23960/ja.v23i2.9190.

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The utilization of peat soil as a planting medium is still faced with several problems, especially in terms of the chemical characteristics of peat soil. Therefore, there is a need for treatment to improve these problems, one of which is by using the poration of palm oil empty fruit bunches and dolomite. This research aims to determine the effect of providing a technology package of empty fruit bunch and dolomite poration doses on the growth and yield of red spinach plants. The research was carried out at the Greenhouse Jalan G. Obos 24, for 3 months (September-November 2023). The research was

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Dermawan, Dedi, Japri Lukman, and Hendri Ali Ardi. "RANCANG BANGUN MESIN UNSTRIPPED BUNCH (USB) CRUSHER DENGAN VALUE ENGINEERING." Jurnal Teknik Industri Terintegrasi 4, no. 2 (2021): 8–16. http://dx.doi.org/10.31004/jutin.v4i2.3138.

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Abstract  PKS PT. XXX produces ± 49,645 tons of empty fruit bunches, which is an average of 16.16% (Dok Sam 2019) of TBS processed for a year. This is less effective and there are still Unstripped Bunch (USB) which are attached to the garden area where the Empty away application is applied. From the results of the study to overcome the problem of loose loose bunches that are still in empty bunches, the Unstripped Bunch Machine (USB) Crusher unit is designed with specifications that have been adjusted and the design is made sturdy and will be directly applied in real form using the Value

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Melo, José Wagner S., Cleiton A. Domingos, Angelo Pallini, José Eudes M. Oliveira, and Manoel G. C. Gondim. "Removal of Bunches or Spikelets Is Not Effective for the Control of Aceria guerreronis." HortScience 47, no. 5 (2012): 626–30. http://dx.doi.org/10.21273/hortsci.47.5.626.

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Worldwide, there remains a reliance on repeated chemical applications as a control strategy for the coconut mite, but these are impractical, not economical, and environmentally hazardous. In this study, the damage severity of Aceria guerreronis on coconut fruits was studied under different conditions to investigate the effects of bunch management on the amount of damage to newly produced bunches. The damage was evaluated using a diagrammatic scale under four different conditions: 1) plants with bunches removed; 2) bunches with the distal portion of the spikelet removed; 3) bunches sprayed mont

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Dwi Januari, Arty, Suyud Warno Utomo, and Haruki Agustina. "Estimation and potential of palm oil empty fruit bunches based on crude palm oil forecasting in Indonesia." E3S Web of Conferences 211 (2020): 05003. http://dx.doi.org/10.1051/e3sconf/202021105003.

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The increase of palm oil production produced waste, which has an impact on the environmental burden. Therefore, the purpose of this article is to predict the amount of palm oil empty fruit bunches produced per month in Indonesia to determine the potential of empty fruit bunches management. The predicted amount of the waste is based on crude palm oil (CPO) forecasts analysis that is processed using exponential triple smoothing. Based on the analysis, it was obtained that the amount of waste of empty fruit bunches proved to be directly proportional to the crude palm oil production. The efficienc

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Dhanesha R., Et al. "Segmentation and Classification of Arecanut Bunches before harvesting." International Journal on Recent and Innovation Trends in Computing and Communication 11, no. 9 (2023): 3953–62. http://dx.doi.org/10.17762/ijritcc.v11i9.9736.

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In the agriculture sector, arecanuts are an extremely valuable crop. The price of an arecanut depends on its stage of ripeness. As a result of a lack of expertise in judging the maturity level of arecanut bunches before harvest, farmers often lose profit. Precision agricultural techniques based on image processing and computer vision have recently assisted farmers in determining crop maturity quality. Precision agricultural techniques based on image processing and computer vision have recently assisted farmers in determining crop maturity quality. Therefore, accuracy in segmenting arecanut bun

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Tishchenko, Vladimir, Artem Berezutsky, Leila Dmitrieva, Ilya Miroshnichenko, and Ildar Shaikhislamov. "Generation of Alfvén waves in magnetized plasma by laser plasma bunches at Mach numbers much less than unity." Solar-Terrestrial Physics 8, no. 2 (2022): 91–97. http://dx.doi.org/10.12737/stp-82202214.

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In this paper, we examine a torsional Alfvén wave produced by periodic plasma bunches in a magnetized plasma flux tube. A new effect has been revealed: the wave is generated not only during the action of bunches, but also for a long time after the termination, which makes it possible to increase the wavelength by several times. We have determined the conditions under which the wave contains η~40 % of the total bunch energy. The wave radius depends on the energy of one bunch; and the length, on their number. The optimum number of bunches is 15. Simultaneously with the Alfvén wave, a bunch plasm

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Tishchenko, Vladimir, Artem Berezutsky, Leila Dmitrieva, Ilya Miroshnichenko, and Ildar Shaikhislamov. "Generation of Alfvén waves in magnetized plasma by laser plasma bunches at Mach numbers much less than unity." Solnechno-Zemnaya Fizika 8, no. 2 (2022): 101–7. http://dx.doi.org/10.12737/szf-82202214.

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In this paper, we examine a torsional Alfvén wave produced by periodic plasma bunches in a magnetized plasma flux tube. A new effect has been revealed: the wave is generated not only during the action of bunches, but also for a long time after the termination, which makes it possible to increase the wavelength by several times. We have determined the conditions under which the wave contains η~40 % of the total bunch energy. The wave radius depends on the energy of one bunch; and the length, on their number. The optimum number of bunches is 15. Simultaneously with the Alfvén wave, a bunch plasm

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Riquelme, Marcos A., Richard W. Hofstetter, David Auty, and Monica L. Gaylord. "Bunching as a Method to Reduce Wood Moisture through Transpirational Drying following Forest Restoration Treatments in Northern Arizona." Journal of Forestry 118, no. 6 (2020): 625–35. http://dx.doi.org/10.1093/jofore/fvaa038.

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Abstract Thinning is a necessary silvicultural activity for restoring the long-term sustainability of pine forests in much of the southwestern United States. In northern Arizona, a landscape-scale restoration effort, called the Four Forest Restoration Initiative, has been implemented to recover the long-term sustainability of 2.4 million acres on four national forests. Cost-effective and efficient thinning methods are needed due to the scale of the project to help improve habitat, conserve biodiversity, protect old growth, reduce risk of severe wildfire, and restore natural forest structure an

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Marmorshtein, A. A., A. K. Antonyan, M. N. Semenova, and A. V. Fisyura. "Agrobiological reaction of Centennial Seedless grape variety to changes in the numberof shoots and bunches on bushes." Fruit growing and viticulture of South Russia 5, no. 89 (2024): 11–26. http://dx.doi.org/10.30679/2219-5335-2024-5-89-11-26.

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Abstract. Normalization of bushes is one of the ways to increase the productivity and quality of the grape yield. Primarily the yield is regulated by pruning shoots during the dormant period, as well as by breaking off at the beginning of the growing season. The article presents the results of studies of the effect of the load of bushes with shoots and bunches of the Centennial Seedless variety on productivity indicators in subzone № 4 of the Central agroecological zone of viticulture of the Krasnodar region. The climate is temperate continental, the soils are represented by low-humus, leached

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Andriyanto, Andriyanto, Retni S. Budiarti, and Agus Subagyo. "Pengaruh Penggunaan Effective Microorganism 4 (EM4) Pada Budidaya Jamur Merang (Volvariella volvaceae) Menggunakan Media Tandan Kosong Kelapa Sawit." Jurnal Biologi UNAND 7, no. 1 (2019): 59. http://dx.doi.org/10.25077/jbioua.7.1.59-68.2019.

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Indonesia is the biggest producer of palm oil in the world. Palm oil empty fruit bunches is the biggest waste generated by the palm oil processing industry. However, utilization of the palm oil empty bunches has been not optimal. The palm oil empty fruit bunches have potential to be developed into a medium for growing mushroom because it has a high cellulose content. However, the high content of cellulose and lignin in palm oil empty fruit bunches is difficult to decompose into organic material that need for mushroom growth. The composting processes of empty fruit bunches can be increased by u

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Savchuk, I., and S. Kovalova. "Specific activity of 137Cs in pork depending on different doses of saponite in the ration." Agroecological journal, no. 4 (December 17, 2016): 117–21. http://dx.doi.org/10.33730/2077-4893.4.2016.271251.

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The concentration of 137Сs in products of pigs slaughter at their cultivation in ІІІ region of radioactive contamination owing to failure on CHАЕS fluctuated within 10.2–19.9 Bk/kg and did not exceed tolerance levels (DU-2006 =200 Bk/kg). Under the influence of a connatural mineral-sorbent saponite specific activity 137Сs in the longest muscle of a back of young growth ІІ, ІІІ and IV skilled bunches compared with control analogues, has dropped, accordingly, by 10.1%, 27.1% and 35.7%. The radionuclide storage coefficient in meat of gilts of skilled bunches was also less, than in control. The su

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Luttikhof, M. J. H., A. G. Khachatryan, F. A. van Goor, K. J. Boller, and P. Mora. "Electron bunch injection at an angle into a laser wakefield." Laser and Particle Beams 27, no. 1 (2009): 69–77. http://dx.doi.org/10.1017/s0263034609000093.

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AbstractExternal injection of electron bunches longer than the plasma wavelength in a laser wakefield accelerator can lead to the generation of femtosecond ultra relativistic bunches with a couple of percent energy spread. Extensive study has been done on external electron bunch (e.g., one generated by a photo-cathode RF linac) injection in a laser wakefield for different configurations.In this paper, we investigate a new way of external injection where the electron bunch is injected at a small angle into the wakefield. This way one can avoid the ponderomotive scattering as well as the vacuum-

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Johns, GG. "Effects of bunch trimming and double bunch covering on yield of bananas during winter in New South Wales." Australian Journal of Experimental Agriculture 36, no. 2 (1996): 229. http://dx.doi.org/10.1071/ea9960229.

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Bunch trimming (removal of male bud and several distal hands from bunches soon after flowering), and double covering (use of 2 bunch covers simultaneously) of banana bunches that emerge during winter in northern New South Wales could have the potential to increase the size, and hence grade and price of harvested fruit. Consequently bunches were either trimmed to 6, 8 or 10 hands or left untrimmed (male bud retained), and either single or double bunch covers were applied on a commercial plantation on 3 occasions during winter, and the effects on fruit size and quality were recorded. Bunch emerg

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Zhao, Xiao-ying, Yang-yang Yang, Huan Jia, et al. "Influence of the solenoid magnetic field on the self-modulation mechanism." Laser and Particle Beams 38, no. 2 (2020): 135–40. http://dx.doi.org/10.1017/s0263034620000178.

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For the guarantee of the long-distance transport of the bunches of China Initiative Accelerator Driven System (CIADS), a new scheme is proposed that extra magnetic field is used in the accelerator-target coupling section before the windowless target to minimize the self-modulation (SM) mechanism. Particle-in-cell simulations are carried out to study the influence of the solenoidal magnetic field on the self-modulation mechanism when long proton bunches move in the background plasmas. The long proton bunches used in the simulations are similar to these in the linear accelerator of CIADS. It is

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Benáček, Jan, Patricio A. Muñoz, and Jörg Büchner. "Bunch Expansion as a Cause for Pulsar Radio Emissions." Astrophysical Journal 923, no. 1 (2021): 99. http://dx.doi.org/10.3847/1538-4357/ac2c64.

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Abstract Electromagnetic waves due to electron–positron clouds (bunches), created by cascading processes in pulsar magnetospheres, have been proposed to explain the pulsar radio emission. In order to verify this hypothesis, we utilized for the first time Particle-in-Cell (PIC) code simulations to study the nonlinear evolution of electron–positron bunches dependant on the initial relative drift speeds of electrons and positrons, plasma temperature, and distance between the bunches. For this sake, we utilized the PIC code ACRONYM with a high-order field solver and particle weighting factor, appr

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Achmad, Basir, and Sulaiman Bakri. "RESPON PERTUMBUHAN ANAKAN BELANGERAN TERHADAP PENYIRAMAN AIR RAWA GAMBUT, AIR TANDAN KOSONG KELAPA SAWIT, DAN KAPUR DOLOMIT." Jurnal Hutan Tropis 9, no. 1 (2021): 166. http://dx.doi.org/10.20527/jht.v9i1.10491.

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The research aimed to analyze the growth response of belangeran (Shorea balangeran) seedlings on the water of palm oil empty bunches and dolomite lime. The research used a method of a completely randomized design, with the treatments: dolomite lime water, oil palm empty bunch water, and peat swamp water as a control. Based on the ANOVA, the treatment had a very significant effect on the increase of height and diameter of the seedlings. The dolomite lime water increased the seedling height of 9.434 cm, followed by oil palm empty bunches with height increase of 6.800 cm, and peat swamp water/con

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Korobkin, V. V., M. Yu Romanovskiy, V. A. Trofimov, and O. B. Shiryaev. "Concept of generation of extremely compressed high-energy electron bunches in several interfering intense laser pulses with tilted amplitude fronts." Laser and Particle Beams 31, no. 1 (2012): 23–28. http://dx.doi.org/10.1017/s0263034612000961.

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AbstractA new concept of generating tight bunches of electrons accelerated to high energies is proposed. The electrons are born via ionization of a low-density neutral gas by laser radiation, and the concept is based on the electrons acceleration in traps arising within the pattern of interference of several relativistically intense laser pulses with amplitude fronts tilted relative to their phase fronts. The traps move with the speed of light and (1) collect electrons; (2) compress them to extremely high density in all dimensions, forming electron bunches; and (3) accelerate the resulting bun

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Zhao, Q. T., S. C. Cao, X. K. Shen, et al. "Design and simulation study of ultra-fast beam bunches split for three orthogonal planes high-energy electron dynamic radiography." Laser and Particle Beams 35, no. 4 (2017): 579–86. http://dx.doi.org/10.1017/s0263034617000647.

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AbstractHere a compact three orthogonal planes high-energy electron radiography system was proposed. One of the critical technologies, the ultra-fast beam bunches split from the bunch train are studied. The separated bunches could be transported to the three orthogonal planes of the target for dynamic radiography diagnostics. The key elements of the ultra-fast bunches split system are transverse deflecting cavity (TDC) and the twin septum magnet (TSM). The principle of TDC and TSM are briefly introduced. An example of the beam bunches split system for test experiment (40 MeV electron beam) wit

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Ramanis, Imelya, Sudradjat Sudradjat, and Deden Saprudin. "Effects of Gibberellin on Physical and Chemical Quality of Oil Palm (Elaeis guineensis Jacq.) Fresh Fruit Bunches." Journal of Tropical Crop Science 10, no. 02 (2023): 87–93. http://dx.doi.org/10.29244/jtcs.10.02.87-93.

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The quality of crude palm oil (CPO) is influenced by the quality of fresh fruit bunches, crop culture, and postharvest handling. A delay in fruit processing can cause physical damages to the fresh fruit bunches. Gibberellic acid (GA3) can potentially reduce the physical damage due to delayed processing of the fresh fruit bunches. Our study aims to determine how GA3 affects the physical and chemical quality of oil palm fresh fruit bunches. The fresh fruit bunch samples were collected from the IPB-Cargill Palm Oil Education and Research, Jonggol, Bogor, Indonesia. This study used a randomized co

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Pinheiro, Isabel, Germano Moreira, Daniel Queirós da Silva, et al. "Deep Learning YOLO-Based Solution for Grape Bunch Detection and Assessment of Biophysical Lesions." Agronomy 13, no. 4 (2023): 1120. http://dx.doi.org/10.3390/agronomy13041120.

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The world wine sector is a multi-billion dollar industry with a wide range of economic activities. Therefore, it becomes crucial to monitor the grapevine because it allows a more accurate estimation of the yield and ensures a high-quality end product. The most common way of monitoring the grapevine is through the leaves (preventive way) since the leaves first manifest biophysical lesions. However, this does not exclude the possibility of biophysical lesions manifesting in the grape berries. Thus, this work presents three pre-trained YOLO models (YOLOv5x6, YOLOv7-E6E, and YOLOR-CSP-X) to detect

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Petrov, V. S., A. V. Fisyura, and A. A. Marmorshtein. "A biological method for managing the yield of Libya grape variety on a 41B Rootstock." Horticulture and viticulture, no. 6 (December 22, 2022): 48–53. http://dx.doi.org/10.31676/0235-2591-2022-6-48-53.

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Advances in grapevine biotechnology are associated with manipulation of vegetative and generative plant organs, effective use of the soil and climate potential of agricultural lands, and biological features of grape genotypes. Grapevine biotechnology allows grape productivity to be increased without additional investments. In this work, we studied table grapes of the Libya variety grafted onto a Chasselas.×V. Berlandieri 41B rootstock to determine variations in grape productivity depending on the different load of vines with shoots and bunches. The research was carried out in the Central Agroe

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Kotov, Vladimir M., and Natallia S. Bogdanova. "Bunch technique for semionline with two groups of items." Journal of the Belarusian State University. Mathematics and Informatics, no. 3 (November 29, 2019): 134–38. http://dx.doi.org/10.33581/2520-6508-2019-3-134-138.

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Bunch technique for semionline with two groups of items is proposed in this paper. Algorithm to solve this problem is to distribute items from the first group bunch approach and after that apply LS-algorithm to assign items from the se cond group. In order to prove the estimation of our algorithm is introduced different types of bunches to distribute all items from the first group such a way that only one of the entered types of bunches are obtained. During the second stage we use LS with worst case performance is at most 17/9.

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Astanti, Anita Dewi, Abdul Hadi, and Hairil Ifansyah. "Pemberian Biochar Arang Kayu dan Tandan Kosong Sawit terhadap Gas N2O pada Tanah Gambut yang Ditumbuhi Kelapa Sawit." Acta Solum 2, no. 2 (2024): 86–93. http://dx.doi.org/10.20527/actasolum.v2i2.2446.

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Peatlands are developed for agricultural cultivation, such as oil palm. The agricultural sector contributes 13.5% of the total greenhouse gas (GHG) emissions. Emissions from this sector are generally in the form of N2O 46%, CH4 45%, and CO2 9%. Recently, the focus on the development of peatlands for this activity has been so great, especially in relation to emissions of nitrous oxide (N2O). The potential for peatland to be used as agricultural land must pay attention to environmental aspects such as the level of N2O emissions. This study aims to determine the effect of wood activated to empty

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BALAKIREV, V. A., V. I. KARAS', I. V. KARAS', and V. D. LEVCHENKO. "Plasma wake-field excitation by relativistic electron bunches and charged particle acceleration in the presence of external magnetic field." Laser and Particle Beams 19, no. 4 (2001): 597–604. http://dx.doi.org/10.1017/s0263034601194061.

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High-amplitude plasma wake waves are excited by high-density relativistic electron bunches (REB) moving in a plasma. The wake-fields can be used to accelerate charged particles, to serve as electrostatic wigglers in plasma free-electron lasers (FEL), and also can find many other applications. The electromagnetic fields in the region occupied by the bunch control the dynamics of the bunch itself. This paper presents the results of 2.5-dimensional numerical simulation of the modulation of a long REB in a plasma, the excitation of wake-fields by bunches in a plasma, in particular, in magnetoactiv

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ENGLAND, R. J., J. B. ROSENZWEIG, G. TRAVISH, et al. "BEAM SHAPING AND PERMANENT MAGNET QUADRUPOLE FOCUSING WITH APPLICATIONS TO THE PLASMA WAKEFIELD ACCELERATOR." International Journal of Modern Physics A 22, no. 23 (2007): 4134–45. http://dx.doi.org/10.1142/s0217751x07037706.

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It has recently been proposed to use a dispersionless translating section (dogleg) with sextupole correction magnets as a bunch compressor to create longitudinally shaped (linearly ramped) electron bunches. We discuss the experiment soon to be underway at the UCLA Neptune Linear Accelerator Laboratory to test this technique with the 300 pC, 13 MeV electron bunches produced by the Neptune S -Band photoinjector. The experiment will utilize a dipole-mode deflecting cavity, as a temporal diagnostic, and a final focus system of permanent magnet quadrupoles with field gradients of 110 T/m. We also d

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K, BALAKRISHNAN, and RAJANGAM J. "Studies on the effect of pre-harvest treatments on maturity, yield and quality of red banana." Madras Agricultural Journal 89, september (2002): 434–37. http://dx.doi.org/10.29321/maj.10.a00242.

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Field experiment conducted during 1998-2000 in red banana revealed significant variations in maturity, yield and quality attributes due to pre-harvest sprays of GA2, MnSO4 and K2SO4 soil mulch by coir waste and covering the bunches with 0.5% and 1.0% ventilated 100 gauge blue polythene sleeves. Among the treatments, covering the bunches with 1% ventilated 100 gauge blue polythene sleeves after opening of the last hand significantly reduced the time taken for maturity from 138.5 days in control to 110 days. The bunch yield was found to be significantly higher in this treatment (13.5 kg) than in

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Cahyadi, Catur, Yudi Firmanul Arifin, Fakhrur Razie, and Akhmad Rizalli Saidy. "PERTUMBUHAN LONGKIDA (Nauclea orientalis L) DENGAN PEMBERIAN TANDAN KOSONG KELAPA SAWIT(TKKS) PADA REKLAMASI PASCATAMBANG BATUBARA." EnviroScienteae 19, no. 2 (2023): 39. http://dx.doi.org/10.20527/es.v19i2.16198.

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Oil palm empty bunches can improve fertility and soil nutrient on ex-mining land. This study aimed to evaluate the effect of oil palm empty fruit bunches on growth of Longkida (Nuclea orientalist L) on post-mining land. This research was conducted at field for 6 months. The application was done at new plant . A single factor of oil palm empty fruit bunch organized on 4 treatments and 10 replication. The results showed oil palm empty bunches able to increase growth of Longkida . Base on data giving 15 kg of EFB has a significant effect in increasing the growth of longkida which can be seen from

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Victorino, Gonçalo, Ricardo Pereira Braga, José Santos-Victor, and Carlos Manuel Lopes. "Overcoming the challenge of bunch occlusion by leaves for vineyard yield estimation using image analysis." OENO One 56, no. 1 (2022): 117–31. http://dx.doi.org/10.20870/oeno-one.2022.56.1.4863.

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Accurate yield estimation is of utmost importance for the entire grape and wine production chain, yet it remains an extremely challenging process due to high spatial and temporal variability in vineyards. Recent research has focused on using image analysis for vineyard yield estimation, with one of the major obstacles being the high degree of occlusion of bunches by leaves. This work uses canopy features obtained from 2D images (canopy porosity and visible bunch area) as proxies for estimating the proportion of occluded bunches by leaves to enable automatic yield estimation on non-disturbed ca

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Li, Weiqin, Zhou Yang, Xing Xu, et al. "Design and Experimental Study of Banana Bunch Transportation Device with Lifting Mechanism and Automatic Bottom-Fixing Fruit Shaft." Agriculture 14, no. 7 (2024): 1161. http://dx.doi.org/10.3390/agriculture14071161.

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In addressing the challenges of high labor intensity, cost, and potential mechanical damage to banana fruit in orchards, this study presents the design of a banana bunch transport device featuring a lifting mechanism and an automatic fruit shaft bottom-fixing system. The device is tailored to the planting and morphological characteristics of banana bunches, aiming for efficient, low-loss, and labor-saving mechanized transport. Key design considerations included the anti-overturning mechanism and the lifting system based on transportation conditions and the physical dimensions of banana bunches

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Wegher, Mario, Michele Faralli, and Massimo Bertamini. "Cluster-Zone Leaf Removal and GA3 Application at Early Flowering Reduce Bunch Compactness and Yield per Vine in Vitis vinifera cv. Pinot Gris." Horticulturae 8, no. 1 (2022): 81. http://dx.doi.org/10.3390/horticulturae8010081.

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Compact bunches have been often associated with higher susceptibility to Botrytis cinerea and therefore reduction in berry quality in grapevine. The objective of this study was to evaluate three management methods (early leaf removal, gibberellic acid, and their combination) for reducing bunch compactness in Vitis vinifera cv. Pinot gris trained in two different training systems with contrasting vigor (Guyot and pergola). Treatments were applied at BBCH 62 or BBCH 65 and yield components, total soluble solids, fruit set, and bunch compactness parameters were evaluated. Both treatments individu

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Pakuza, Collette, Philip Burrows, Roberto Corsini, et al. "A beam position monitor for electron bunch detection in the presence of a more intense proton bunch for the AWAKE Experiment." Journal of Physics: Conference Series 2420, no. 1 (2023): 012067. http://dx.doi.org/10.1088/1742-6596/2420/1/012067.

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Abstract The Advanced Proton Driven Plasma Wakefield Experiment (AWAKE) at CERN uses 6 cm long proton bunches extracted from the Super Proton Synchrotron (SPS) at 400 GeV beam energy to drive high gradient plasma wakefields for the acceleration of electron bunches to 2 GeV within a 10 m length. Knowledge and control of the position of both copropagating beams is crucial for the operation of the experiment. Whilst the current electron beam position monitoring system at AWAKE can be used in the absence of the proton beam, the proton bunch signal dominates when both particle bunches are present s

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Whiting, JR, and WJ Hardie. "Comparison of selections of Vitis vinifera cv. Pinot Noir at Great Western, Victoria." Australian Journal of Experimental Agriculture 30, no. 2 (1990): 281. http://dx.doi.org/10.1071/ea9900281.

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Five selections of Pinot Noir grapevine were evaluated over 3 seasons at Great Western, Victoria. The yields of selection IC698104 were consistently higher than all other selections and were always significantly higher than selections IV692222 and IC688048. The greater yields of selection IC698104 were associated with a high number of bunches per vine and a high bunch weight. Selection IV622051 had the greatest bunch weight but fewer bunches per vine than IC698 104. Selection AV7 12340 had a similar number of bunches per vine to IC698 104, but a significantly lower bunch weight due to fewer be

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WANG, Y. C., S. Y. HSU, C. S. HWANG, et al. "GENERATION OF ULTRA-SHORT ELECTRON BUNCHES FOR LIGHT SOURCE RESEARCH." International Journal of Modern Physics B 21, no. 03n04 (2007): 430–37. http://dx.doi.org/10.1142/s0217979207042215.

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An S-band thermionic 1.5-cell rf gun injector system is being built at NSRRC for Taiwan Photon Source (TPS) booster. At optimized field ratio, an electron beam with linear energy chirp can be generated by the rf gun. The beam is then compressed by an alpha magnet such that ultra-short electron bunches at femto-second bunch length can be obtained. Particle dynamics has been studied for an rf gun with nose cone at the cathode, simulation results show that 74 pC bunches at about 97 fs is achievable. Some of the critical components such as the rf gun and alpha magnet have been fabricated and being

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Akbar, A. R. M., A. D. Wibowo, and P. I. Prabandari. "Determining the Optimal Harvesting Time of Fresh Fruit Bunches Based on the Yield of Oil and Carotene." IOP Conference Series: Earth and Environmental Science 1290, no. 1 (2024): 012047. http://dx.doi.org/10.1088/1755-1315/1290/1/012047.

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Abstract The timing of harvesting oil palm fruit might affect the quality of the oil palm product. Mostly, The approximate number of palm oil fruits that have broken off from their bunches (loose-fruit) is usually used to measure the ripeness of fruit. The goal of this study was to establish the ideal harvesting period with variations in the amount of palm oil fruits that were loose from their bunches using two indicators: oil yield and carotene content. The variance was dependent on one factor: the number of days after the fruit was discovered unfastened from its bunch. The results showed tha

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Ika Fitriana Dyah Ratnasari. "Chemical Characteristics of Palm Frond and Empty Fruit Bunch Biochar in Pyrolysis Method." Journal of Sustainable Agriculture and Biosystems Engineering 2, no. 01 (2024): 028–33. http://dx.doi.org/10.32734/jsabe.v2i01.17400.

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Indonesia's palm oil production continues to increase. The increase in palm oil production has implications for the high amount of waste generated in the form of solid and liquid waste. Solid waste that is produced is fronds and empty bunches. So far, the utilization of frond and empty bunch waste has not been maximized, so that its presence in the oil palm plantation area accumulates and tends to interfere with oil palm maintenance and harvesting activities. Processing the waste of fronds and empty bunches with pyrolysis method to make biochar can be the right solution to maximize the use val

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Berezutsky, A. G., V. N. Tishchenko, I. B. Miroshnichenko, A. A. Chibranov, and I. F. Shaikhislamov. "Numerical modeling of the generation Alfvén waves by laser plasma in a magnetized background plasma at Alfvén-Mach numbers less than one." PHYSICS OF AURORAL PHENOMENA 47, no. 1 (2024): 78–81. https://doi.org/10.51981/2588-0039.2024.47.017.

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The paper presents a comparison results of numerical simulation of the generation the Alfven and slow magnetosonic wave created by periodic laser plasma bunches in a magnetized background plasma in the pre-Alfvenic bunch expansion (MA=0.2) and MA=1. It is shown that, regardless of the mode, Alfven wave localized in a magnetic flux tube of radius Rd~1, and the efficiency of converting plasma bunches into an Alfven wave at MA = 0.2 is several times higher than the value obtained at MA = 1.

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Sutikno, Agus, Yelly Zamaya, Vivin Jenika Putri, et al. "Socialization of KOSJA Processing (Kompos Janjang Kosong) in Oil Palm Farmer Groups in Buatan Baru Village, Siak Regency, Riau Province." Dinamisia : Jurnal Pengabdian Kepada Masyarakat 8, no. 5 (2024): 1335–40. http://dx.doi.org/10.31849/dinamisia.v8i5.22594.

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As the area of oil palm plantations increases, the waste from oil palm empty fruit bunches also increases. By reducing the use of excessive chemicals, sustainable oil palm plantations can be achieved. One way to achieve this is by utilizing empty oil palm bunch waste into KOSJA (Kompos Janjang Kosong). This service aims to provide knowledge, understanding, and how to process empty oil palm bunches into KOSJA. This activity was carried out in Riau Province, Siak Regency, Kampung Buatan Baru, Kerinci Kanan District. The output achieved through this service is the increased understanding and know

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Johns, GG, and KJ Scott. "Delayed harvesting of bananas with 'sealed' covers on bunches. 2. Effect on fruit yield and quality." Australian Journal of Experimental Agriculture 29, no. 5 (1989): 727. http://dx.doi.org/10.1071/ea9890727.

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A field study was conducted to examine the effects of various bunch covering and harvest delay combinations on the environment inside bunch covers, and on fruit yield and quality parameters. Treatments included the use of both unsealed and initially sealed (but often ultimately leaky) clear covers under the industry standard blue/silver cover, and the inclusion of an ethylene absorbent inside 'sealed' covers. The finger length, girth and weight of 'sealed' cover bunches that were harvested late were increased by up to 11, 13, and 37% respectively. Maturity bronzing increased with increasing de

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