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Articles 41101 - 41130 of 302522

Full-Text Articles in Physical Sciences and Mathematics

Simulation Of Civil Aircraft Takeoff Scenario Based On Mbse, Liangyu Zhao, Junjie Ye, He Qi, Guo Wei, Zhao Yong Oct 2021

Simulation Of Civil Aircraft Takeoff Scenario Based On Mbse, Liangyu Zhao, Junjie Ye, He Qi, Guo Wei, Zhao Yong

Journal of System Simulation

Abstract: Aiming at the interactions and flaws of design being difficult to be fully discovered, the requirements being hard to be traced, the early verification of system design being difficult to be realized and so on, a Model-Based System Engineering (MBSE) method is adopted to realize the simulation of civil aircraft take-off scenario. Based on the analysis of civil aircraft takeoff scenario requirements, the civil aircraft takeoff scenario simulation architecture, take-off scenario discrete logic model, and continuous physical simulation model are established. The method of fusing the SysML model and Simulink model and the 3D visualization of simulation data …

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Response To Comments To The Butte Priority Soils Operable Unit (Bpsou) Unreclaimed Sites Draft Final Field Sampling Plan (Fsp) Package #6: Ur-05, Ur-27, Ur-28, Ur-29, Ur-30, And Ur-34, Mike Mcanulty Oct 2021

Response To Comments To The Butte Priority Soils Operable Unit (Bpsou) Unreclaimed Sites Draft Final Field Sampling Plan (Fsp) Package #6: Ur-05, Ur-27, Ur-28, Ur-29, Ur-30, And Ur-34, Mike Mcanulty

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

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Attachment D To The Dsr; Work Order 10577874, 10584152 Edd, Pioneer Technical Services, Inc. Oct 2021

Attachment D To The Dsr; Work Order 10577874, 10584152 Edd, Pioneer Technical Services, Inc.

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

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Response To Comments To The Butte Priority Soils Operable Unit (Bpsou) Unreclaimed Sites Draft Final Field Sampling Plan (Fsp) Package #7: Ur-01, Ur-12, Ur-03, Ur-04, Ur-15, And Ur-17, Mike Mcanulty Oct 2021

Response To Comments To The Butte Priority Soils Operable Unit (Bpsou) Unreclaimed Sites Draft Final Field Sampling Plan (Fsp) Package #7: Ur-01, Ur-12, Ur-03, Ur-04, Ur-15, And Ur-17, Mike Mcanulty

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

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Butte Priority Soils Operable Unit (Bpsou) Unreclaimed Sites Final Field Sampling Plan (Fsp) Package #6: Ur-05, Ur-27, Ur-28, Ur-29, Ur-30, And Ur-34, Mike Mcanulty Oct 2021

Butte Priority Soils Operable Unit (Bpsou) Unreclaimed Sites Final Field Sampling Plan (Fsp) Package #6: Ur-05, Ur-27, Ur-28, Ur-29, Ur-30, And Ur-34, Mike Mcanulty

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

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Response To Comments To The Butte Priority Soils Operable Unit (Bpsou) Unreclaimed Sites Draft Final Field Sampling Plan (Fsp) Package #7: Ur-01, Ur-12, Ur-03, Ur-04, Ur-15, And Ur-17, Mike Mcanulty Oct 2021

Response To Comments To The Butte Priority Soils Operable Unit (Bpsou) Unreclaimed Sites Draft Final Field Sampling Plan (Fsp) Package #7: Ur-01, Ur-12, Ur-03, Ur-04, Ur-15, And Ur-17, Mike Mcanulty

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

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Research On Experimental Method Of Joint Operation Simulation Based On Human-Machine Hybrid Intelligence, Ma Jun, Jingyu Yang, Wu Xi Oct 2021

Research On Experimental Method Of Joint Operation Simulation Based On Human-Machine Hybrid Intelligence, Ma Jun, Jingyu Yang, Wu Xi

Journal of System Simulation

Abstract: In view of the difficulties that the joint operation simulation experiment methods are mainly for guiding equipment evaluation and demonstration, which is difficult to effectively support the research of operation problems, a joint operation simulation experiment method based on human-machine hybrid intelligence is proposed. The classification, generation and accumulation process of the knowledge in joint operation simulation experiment are clarified. Through the detailed descriptions of experimental interaction process, experimental operation process, experimental driving mode, simulation operation mode, supporting system structure, etc., a joint operation simulation experiment framework based on man-machine hybrid intelligence is constructed. It provides a new method …

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Fixed-Time Event-Triggered Formation Control For Multiple Uavs, Ye Shuai, Guoping Jiang, Yingjiang Zhou, Liu Shang Oct 2021

Fixed-Time Event-Triggered Formation Control For Multiple Uavs, Ye Shuai, Guoping Jiang, Yingjiang Zhou, Liu Shang

Journal of System Simulation

Abstract: To solve the quadrotor UAV formation control problem, an event-triggered fixed time formation control algorithm of multi quadrotor UAV system is studied. For the attitude loop control problem of UAV, the switching fixed time sliding surface is selected to make the system reach the equilibrium point in a fixed time when the system state is on the sliding surface. A fixed-time sliding mode controller is designed so that the system state which is not on the sliding surface can reach the sliding surface within a fixed time. In view of the position loop control problem of UAV, the event-driven …

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Three-Dimensional Visual Dynamic Simulation Of Rice Leaf Cells, Deheng Zhao, Yingding Zhao, Hongyun Yang, Wenlong Yi Oct 2021

Three-Dimensional Visual Dynamic Simulation Of Rice Leaf Cells, Deheng Zhao, Yingding Zhao, Hongyun Yang, Wenlong Yi

Journal of System Simulation

Abstract: To explore the evolution process of rice leaf cell morphology with the help of computer visualization technology, it is necessary to establish the biomechanical relationship between the cell geometry model and its deformation. A dynamic simulation method is proposed for the 3D visualization of leaf cells based on the physical-mechanical properties, in which the cytoskeleton topology is represented by a "half-edge" data structure, and the surface geometries are constructed using a bicubic Bézier surface. The control parameters of a deformed surface are determined through "vertex", "edge" or "face" topological unit query algorithms of the cytoskeleton, and the cell stress-strain …

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Research On Accurate Gesture Recognition Algorithm In Complex Environment Based On Machine Vision, Xu Sheng, Wenyu Feng, Zhicheng Liu, Xintao Tu, Minrui Fei, Kun Zhang Oct 2021

Research On Accurate Gesture Recognition Algorithm In Complex Environment Based On Machine Vision, Xu Sheng, Wenyu Feng, Zhicheng Liu, Xintao Tu, Minrui Fei, Kun Zhang

Journal of System Simulation

Abstract: To address the issue of cross infection caused by elevator public buttons during COVID-19, a software algorithm based on machine vision for non-contact control of public buttons by gesture recognition is designed. In order to improve the accuracy of gesture recognition, an improved YOLOv4 algorithm is proposed. A Ghost module is designed based on attention mechanism, and the ResBlock module in YOLOv4 is improved to Ghost module. The experimental results show that, in the task of gesture recognition, the detection speed is improved by 14% and the detection accuracy is improved by 0.1% compared with the original model. The …

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Modeling And Simulation Of Car Following In Fog Based On Cellular Automata, Zhanhong Liu, Xiujian Yang, Xiangji Wu, Huang Zhen Oct 2021

Modeling And Simulation Of Car Following In Fog Based On Cellular Automata, Zhanhong Liu, Xiujian Yang, Xiangji Wu, Huang Zhen

Journal of System Simulation

Abstract: In order to ensure the safety of driving in foggy weather, a microscopic model of car following and lane changing traffic flow is established based on cellular automata. In view of the instability of car following state in foggy weather, dynamic random acceleration is introduced to segment modeling. The simulation accuracy is improved by refining cell size and cell step size and adding position update allowance. The relationship curves of speed and vehicle dispersion with time and the speed density diagram are obtained. The results show that: the vehicle speed fluctuates greatly in medium fog; the dispersion …

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Virus Propagation And System Simulation Based On Cellular Automata Model, Lijuan Zhang, Fuchang Wang, Zhengang Li Oct 2021

Virus Propagation And System Simulation Based On Cellular Automata Model, Lijuan Zhang, Fuchang Wang, Zhengang Li

Journal of System Simulation

Abstract: A susceptible-latent-infected-cured-immune virus spreading model is established according to the characteristics of epidemic transmission and the actual urban spatial map model. Individuals in the environment are regarded as agents, and the spreading mechanism is established according to the principle of cellular. The effects of different strategies and different characteristics of virus spreading on epidemic have been studied. The role and effect of important factors on epidemic prevention and control method are discussed, and the model is validated taking Shijiazhuang epidemic as an example . The results show that the number of initial latent, the infectivity of disease, vaccination proportion …

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Virtual And Real Fusion Experiment Simulation Technology Based On Gesture Interaction, Xuyan Zou, Hanwu He, Yueming Wu, Jingwei Deng Oct 2021

Virtual And Real Fusion Experiment Simulation Technology Based On Gesture Interaction, Xuyan Zou, Hanwu He, Yueming Wu, Jingwei Deng

Journal of System Simulation

Abstract: In experimental teaching, some traditional experiments cannot be carried out due to limitations of experimental environment, experimental equipment, and faculty. In order to solve the above problems, the method of constructing virtual and real fusion simulation experiment using depth cameras is explored.. The Aruco labeling algorithm is used to achieve one-to-one registration of the virtual scene and the real scene, and the experimental environment of virtual and real fusion is constructed combining the colour images and depth images collected by the depth camera in real time. In order to achieve the purpose of operating virtual equipment, a gesture interaction …

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Constructing Frameworks For Task-Optimized Visualizations, Ghulam Jilani Abdul Rahim Quadri Oct 2021

Constructing Frameworks For Task-Optimized Visualizations, Ghulam Jilani Abdul Rahim Quadri

USF Tampa Graduate Theses and Dissertations

Visualization is crucial in today’s data-driven world to augment and enhance human understanding and decision-making. Effective visualizations must support accuracy in visual task performance and expressive data communication. Effective visualization design depends on the visual channels used, chart types, or visual tasks. However, design choices and visual judgment are co-related, and effectiveness is not one-dimensional, leading to a significant need to understand the intersection of these factors to create optimized visualizations. Hence, constructing frameworks that consider both design decisions and the task being performed enables optimizing visualization design to maximize efficacy. This dissertation describes experiments, techniques, and user studies to …

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Raman Investigations Of The Radiation-Induced Modifications In Ipp-Vgcnf Nanocomposites: The Nanofillers’ Tale, Dorina M. Chipara, Mihail Secu, Karen Lozano, Corina Secu, Mircea Chipara Oct 2021

Raman Investigations Of The Radiation-Induced Modifications In Ipp-Vgcnf Nanocomposites: The Nanofillers’ Tale, Dorina M. Chipara, Mihail Secu, Karen Lozano, Corina Secu, Mircea Chipara

Physics and Astronomy Faculty Publications and Presentations

Nanocomposites of isotactic polypropylene loaded by various amounts of vapor-grown carbon nanotubes ranging from 0 to 20% wt. were obtained by extrusion. Raman investigations on these nanocomposites are reported. The nanocomposites were irradiated using a 60Co, with an integral dose of 1 kGy/h up to integral doses of 9 kGy, 18 kGy, and 27 kGy, in air, at room temperature. Raman measurements were performed by using a Bruker Senterra confocal Raman spectrometer operating at 785 nm. The research is focused on the information contained within the D and G Raman lines of these nanocomposites as a function of nanotube loading …

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Evaluating Halogen-Bond Strength As A Function Of Molecular Structure Using Nuclear Magnetic Resonance Spectroscopy And Computational Analysis, Quang Minh Dang, Jeffrey H. Simpson, Carol A. Parish, Michael C. Leopold Oct 2021

Evaluating Halogen-Bond Strength As A Function Of Molecular Structure Using Nuclear Magnetic Resonance Spectroscopy And Computational Analysis, Quang Minh Dang, Jeffrey H. Simpson, Carol A. Parish, Michael C. Leopold

Chemistry Faculty Publications

Halogen bonding (XB) is a highly directional, non-covalent intermolecular interaction between a molecule (XB donor) presenting a halogen with an electron-deficient region or sigma hole (σ-hole) and an electron-rich or Lewis-base molecule (XB acceptor). A systematic, experimental, and theoretical study of solution-phase XB strength as a function of the molecular structure for both XB donor and acceptor molecules is presented. The impact of specific structural features is assessed using 19F and 1H nuclear magnetic resonance (NMR) titrations to determine association constants, density functional theory calculations for interaction energies and bond lengths, as well as 19F–1H …

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Recharge Assessment In The Context Of Expanding Agricultural Activity: Urucuia Aquifer System, Western State Of Bahia, Brazil, Glauco Z.S. Eger, Gerson C. Silva Junior, Eduardo A.G. Marques, Bernardo R.C. Leão, Diana G.T.B. Da Rocha, Troy E. Gilmore, Luís G.H. Do Amaral, Juremá A.O. Silva, Christopher Neale Oct 2021

Recharge Assessment In The Context Of Expanding Agricultural Activity: Urucuia Aquifer System, Western State Of Bahia, Brazil, Glauco Z.S. Eger, Gerson C. Silva Junior, Eduardo A.G. Marques, Bernardo R.C. Leão, Diana G.T.B. Da Rocha, Troy E. Gilmore, Luís G.H. Do Amaral, Juremá A.O. Silva, Christopher Neale

Conservation and Survey Division

Groundwater recharge rate estimation is crucial to sustainable development of aquifers in intensely pumped regions, such as the Urucuia Aquifer System (UAS). A sedimentary aquifer in Western Bahia, Brazil, that underlies one of the major agricultural areas of the country where there has been major growth of irrigated areas. This study seeks to evaluate the recharge component of the water budget in the UAS area, based on three complementary techniques. The double-ring infiltrometer test was used to evaluate surface infiltration capacity, an important control on recharge. Water level data from wells (2011–2019 period, 19 wells) in the Brazilian Geological Survey’s …

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Forage Yield And Nutritive Quality Of Haulm From Dual-Purpose Cowpea (Vigna Unguiculata L Walp) Cultivars For Dry Season Feeding In Nigeria, N. J. Anyanwu, Olufemi S. Onifade, Jimoh A. Olanite, V. I. O. Olowe, B. O. Boukar, I. I. Ekpe Oct 2021

Forage Yield And Nutritive Quality Of Haulm From Dual-Purpose Cowpea (Vigna Unguiculata L Walp) Cultivars For Dry Season Feeding In Nigeria, N. J. Anyanwu, Olufemi S. Onifade, Jimoh A. Olanite, V. I. O. Olowe, B. O. Boukar, I. I. Ekpe

IGC Proceedings (1993-2023)

The availability of high quality forage especially during the dry season remains a major challenge to ruminant livestock production in Nigeria and many parts of West Africa. Due to the prevailing mismatch between livestock population and supply of feed resources in the arid and semi arid Nigeria, the humid forest zone represents a potential source for crop residues, especially during the dry season due to longer rainfall duration and suitable climate. This study was conducted to evaluate forage yield and nutritive quality of haulm from selected dual purpose cowpea (Vigna unguiculata L. Walp.) cultivars in the humid rain forest …

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Influence Of Seeding Rate On Growth Performance And Yield Of Early Maturing Sorghum, Ismail S. Selemani, O. B. Ngonyani Oct 2021

Influence Of Seeding Rate On Growth Performance And Yield Of Early Maturing Sorghum, Ismail S. Selemani, O. B. Ngonyani

IGC Proceedings (1993-2023)

Heavy grazing pressure in Tanzanian semi-arid rangelands coupled with climate change and variability has resulted into severe decline in forage production and changes in vegetation composition. To increase forage biomass production in the face of climate change and variability, climate resilient fodder crops such as early maturing sorghum have been recommended in arid and semi-arid regions. However, paucity of information on the best agronomic practices especially the optimal seeding rate and row spacing fostered the need to carry out research on growth performance and yield of early maturing sorghum. The experiment was conducted at Magadu Dairy Farm to assess the …

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Comparison Of Four Maize Cultivars (Zea Mays L.) As Winter Forage In Sudan, Rihab El Zubair Oct 2021

Comparison Of Four Maize Cultivars (Zea Mays L.) As Winter Forage In Sudan, Rihab El Zubair

IGC Proceedings (1993-2023)

Winter forage availability in Sudan is constrained by lack of a suitable annual winter forage crop. The main forage crop grown is Abu70 (Sorghum bicolor) which is a summer crop that yields 7.6-8.4 t/ha in summer but much less in winter. There is, therefore, need for a winter high yielding forage crop that exceeds Abu70 in productivity and quality. This study was aimed to evaluate four forage maize cultivars as potential winter crops in central Sudan in terms of productivity and quality. An experiment was conducted using four maize forage cultivars. The experiment lasted for two consecutive seasons …

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Title Evaluation Of Yields And Nutritive Composition Of Dual Purpose Sweet Potato Vine Cultivars For Forage Use, R. S. Kenana, A. I. Hoka, N. Ondabu, F. Ondabu, J. Mercy Oct 2021

Title Evaluation Of Yields And Nutritive Composition Of Dual Purpose Sweet Potato Vine Cultivars For Forage Use, R. S. Kenana, A. I. Hoka, N. Ondabu, F. Ondabu, J. Mercy

IGC Proceedings (1993-2023)

The sweet potato vine (SPV) is a widely grown but underutilized feed resource for livestock. The vines have desirable characteristics suitable for fodder production due to high contents of protein and digestible energy. The objective of this study was to evaluate the yield and nutritive composition of five dual purpose cultivars based on vine production for forage use. The experimental design was arranged in randomized complete block design where six cultivars of sweet potato were established in plots of 2.5m x 2.5m in three replicates. The cultivars used were; Kenspot 1, 2, 3, 4, and 5. An improved forage type …

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Nitrogen Options To Increase Yields For Stockpiling Cool Season Grass In Eastern Ohio, Usa, C. D. Penrose, J. S. Mccutcheon, D. F. Lima, T. G. Wiseman, M. A. Landefeld Oct 2021

Nitrogen Options To Increase Yields For Stockpiling Cool Season Grass In Eastern Ohio, Usa, C. D. Penrose, J. S. Mccutcheon, D. F. Lima, T. G. Wiseman, M. A. Landefeld

IGC Proceedings (1993-2023)

Stockpiling cool season grass for grazing in the fall and winter is an option to extend the grazing season. The purpose of this study was to determine the effects of yield and quality by adding urea, urea with Agrotain®, and ammonium sulfate to cool season grasses, primarily fescue and orchardgrass. This was the third year of the three location study in Southeast Ohio. Each location had a randomized complete block design with four treatments (control, 112 kg urea ha-1, 112 kg urea ha-1 plus Agrotain®, and 245.5 kg ammonium sulfate ha-1) and four replications of …

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Diet Selection By Goats At Kalemando, North Darfur, Sudan, Abdelrahim I. H. Mansoor, Babo Fadlalla Oct 2021

Diet Selection By Goats At Kalemando, North Darfur, Sudan, Abdelrahim I. H. Mansoor, Babo Fadlalla

IGC Proceedings (1993-2023)

Pressure on rangelands of Sudan has increased in the last few decades due to increase in human population and in animal numbers. The rangelands were also impacted by climate change, desertification, agricultural expansion, mining, and overgrazing. Decreased amounts of rainfall have impoverished the natural rangelands. Goats are capable of grazing on semi-desert regions characterized by low rainfall and scarce grazing plants. It is therefore necessary to know and enhance plant species preferred by goats to properly manage the rangelands. The present study was conducted at Kalemando, North Darfur State during the rainy season of year 2017 when most plants were …

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Smallholder Farmer Seed Production Of Mulato Ii Hybrid Brachiaria In Thailand And Laos - Bringing Quality Forage Seeds Home To Africa, M. D. Hare Oct 2021

Smallholder Farmer Seed Production Of Mulato Ii Hybrid Brachiaria In Thailand And Laos - Bringing Quality Forage Seeds Home To Africa, M. D. Hare

IGC Proceedings (1993-2023)

Seeds of Mulato II hybrid brachiaria [Urochloa ruziziensis (syn. Brachiaria ruziziensis) x U. brizantha (syn. B. brizantha) x U. decumbens (syn, B.decumbens)] produced by smallholder farmers in villages in northeast Thailand and northern Laos, under contract to Ubon Forage Seeds Co. Ltd, a tropical forage seed company in Thailand, have come home to Africa. Since 2012, over 20,000 kg of Mulato II seed have been exported from Thailand to Kenya. The seed is hand-harvested from seed-heads in Laos and by hand-sweeping the seed from the ground in Thailand. The farmers semi-clean the seed in the field …

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Induction Of Tetraploid Ruzigrass (Brachiaria Ruziziensis) By Colchicine And Possibility Of Using Seed Weight As Screening Method, R. Poungkaew, Y. Mangpung, J. Arananant, P. Chuchuay, S. Thaikua, P. Chanpeng Oct 2021

Induction Of Tetraploid Ruzigrass (Brachiaria Ruziziensis) By Colchicine And Possibility Of Using Seed Weight As Screening Method, R. Poungkaew, Y. Mangpung, J. Arananant, P. Chuchuay, S. Thaikua, P. Chanpeng

IGC Proceedings (1993-2023)

Tetraploid ruzigrass (Brachiaria ruziziensis) have been obtained by colchicine treatment of in vitro apical meristems and embryogenic calli. The colchicine treatment consisted of culturing apical meristem on MS basal medium containing 6.0 mg L-1 6-benzylaminopurine (BAP) and 0.05-0.20% colchicine for 8, 14, 20 and 26 h. After treated by colchicine, apical meristems were transferred onto former medium without colchicine for 4 weeks. Surviving apical meristems were induced multiple roots on MS basal medium containing 2.0 mg L-1 BAP. The ploidy level of plants after colchicine treatment was determined by flow cytometry. Apical meristems treated with 0.05% …

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Growth Performance And Yield Of Three Brachiaria Cultivars Subjected To Different Eco-Climatic Zones Of Tanzania, Ismail S. Selemani Oct 2021

Growth Performance And Yield Of Three Brachiaria Cultivars Subjected To Different Eco-Climatic Zones Of Tanzania, Ismail S. Selemani

IGC Proceedings (1993-2023)

Replacement of high quality (perennial forage) with low quality (annual forage) due to the effects of climate change has resulted into low milk production in Tanzania to 4.5L which is below the genetic potential of producing at least 15L of milk per cow per day. Though high yield fodder grasses such as Brachiaria have been recommended as climate smart fodder grass, little information has been documented in Tanzania particularly with respect to the growth performance of these grasses across different eco-climatic zones. The current study determine the performance and yield of three cultivars of Brachiaria (Brachiaria brizantha cv. Piata, …

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Differences In Urochloa Hybrids And Cultivars Biomass Production In Several Sites In Western Kenya, S. Mwendia, A. O. Notenbaert, D. M. Mwangi, R. Odhiambo, I. Ogutu, A. Juma Oct 2021

Differences In Urochloa Hybrids And Cultivars Biomass Production In Several Sites In Western Kenya, S. Mwendia, A. O. Notenbaert, D. M. Mwangi, R. Odhiambo, I. Ogutu, A. Juma

IGC Proceedings (1993-2023)

Forage production is at the core of improved livestock productivity, especially in sub Saharan Africa. The genetic potential of existing animals remains underutilized due to limited forage quality and quantity. Albeit wide range of forage germplasm that exists, little data is available for identifying suitable genotypes, matched to specific environments and production systems. Due to the spatial and temporal diverse environments in which livestock production happens, multi-locational screening of forage production and characterizing genotype by environment interaction is key. We selected seven Urochloa (Syn. Brachiaria) genotypes comprising three hybrids and four cultivars and established them in on-farm trials in …

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Identification And Analysis Of Flowering Time Candidate Genes Of Dactylis Glomerata L., X. Q. Zhang, G. Y. Feng, L. K. Huang, X. X. Zhao, Z. F. Yang Oct 2021

Identification And Analysis Of Flowering Time Candidate Genes Of Dactylis Glomerata L., X. Q. Zhang, G. Y. Feng, L. K. Huang, X. X. Zhao, Z. F. Yang

IGC Proceedings (1993-2023)

Orchardgrass (Dactylis glomerata L.) is an important forage grass for cultivating livestock worldwide. Heading date is a surrogate measure of flowering time and is strongly correlated with the yield and quality of forage grasses. Here, we identified 210 flowering-related genes in orchardgrass by BLASTP. In addition, our integrated analysis of transcriptome, quantitative trait locus (QTL), and bulked segregant analysis (BSA) provided insights into the genetic network regulating flowering time. The results revealed that four main candidate genes may participate in flowering time control, including one FT-like gene and three MADS-box genes. Expression investigation between the early-flowering and late-flowering phenotype …

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Brs Quênia And Brs Tamani: New Panicum Maximum Jacq. Hybrid Cultivars In Brazil, Liana Jank, C. M. S. De Andrade, Giovana A. Maciel, Rodrigo A. Barbosa, Gustavo J. Braga, Manuel C. M. Macedo, José R. Valério, Jaqueline R. Verzignassi, A. H. Zimmer, Celso D. Fernandes, M. F. Santos, Rosangela M. Simeão Oct 2021

Brs Quênia And Brs Tamani: New Panicum Maximum Jacq. Hybrid Cultivars In Brazil, Liana Jank, C. M. S. De Andrade, Giovana A. Maciel, Rodrigo A. Barbosa, Gustavo J. Braga, Manuel C. M. Macedo, José R. Valério, Jaqueline R. Verzignassi, A. H. Zimmer, Celso D. Fernandes, M. F. Santos, Rosangela M. Simeão

IGC Proceedings (1993-2023)

Since 1982 Embrapa Beef Catle in Campo Grande, MS, Brazil, develops a Panicum maximum Jacq. breeding program, based on the germplasm collected and assembled by IRD (Institut de Recherche pour le Developpment) and received through a cooperation-agreement with IRD. The germplasm was evaluated and four cultivars were released directly from the germplasm: cultivars Tanzania, Mombaça, Massai and BRS Zuri. Breeding began in 1990 and involved crosses between sexual plants and selected apomictic accessions. The program consists of evaluation followed by selection of hybrids in plots with replications, evaluation of the selected hybrids in national network experiments in diverse regions and …

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Nutritional Characteristics Of Brachiaria Ruziziensis (Germain & Evrard) Subjected To Different Doses Of Gamma Rays, A. I. Hoka, M. Gicheru, S. Otieno Oct 2021

Nutritional Characteristics Of Brachiaria Ruziziensis (Germain & Evrard) Subjected To Different Doses Of Gamma Rays, A. I. Hoka, M. Gicheru, S. Otieno

IGC Proceedings (1993-2023)

Appropriate methods of mutation induction are of high importance in pastures for increased genetic variability and improved forage performance. The objective of this research was to improve agronomic and nutritive performance of mutant lines through induced mutagenesis to seeds of a local landrace Brachiaria ruziziensis. The seeds were irradiated with 0, 10, 20, 30, and 40Gy doses of gamma radiation from Cobalt 60 (60Co). Treatments were; KE 0Gy, KE 10Gy, KE 20Gy, KE 30Gy, and KE 40Gy resulting into M1 seeds. The seeds were planted in the greenhouse in germination pots then transplanted to the field. Seeds …

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