Gotowe bibliografie tematyczne / Gust Enhancement

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Gotowa bibliografia na temat „Gust Enhancement”

Autor: Grafiati

Data publikacji: 6 września 2023

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Artykuły w czasopismach na temat "Gust Enhancement"

Jian, Jun, Jinhai Chen i Peter J. Webster. "Enhancement of Cruise Boat Resilience to Strong Convective Gusts with Global Model Cumulus Variable Prediction". Journal of Marine Science and Engineering 11, nr 8 (13.08.2023): 1588. http://dx.doi.org/10.3390/jmse11081588.

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Ship pilots and maritime safety administration have an urgent need for more accurate and earlier warnings for strong wind gusts. This study firstly investigated the “Oriental Star” cruise ship capsizing event in 2015, one of the deadliest shipwreck events in recent years, and explored all related hydro-meteorological components in a global mesoscale model. It was found that rather than the missing signal in raw surface-wind prediction, the cumulus precipitation variable (CP) increased dramatically during the accident occurrence, which significantly corresponds to a sub-grid strong wind gust. The effective lead time could be extended from 24 h (deterministic model) to 48 h (ensemble model). This finding was then verified in another two recent deadly cruise boat accidents. The introduction of the new variable aims to improve the current maritime safeguard system in predicting sub-grid strong wind gusts for small-sized cruise boats offshore and in inland rivers. Finally, an automatic response system was developed to provide economical convection prediction via INMARSAT email communication, aiming to explore operational severe convective gust early warning and appropriate numerical mesoscale model applications.

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Bruce Ralphin Rose, J., i Gr Jinu. "Gust Induced Aerodynamic Force Prediction on a Transport Wing Using Quasi-Steady Approximation". International Journal of Computational Methods 12, nr 06 (grudzień 2015): 1550034. http://dx.doi.org/10.1142/s0219876215500346.

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The atmospheric wind turbulence over a specified time period has a strong influence on the airplane performance characteristics. Forecasting of this unsteady aerodynamic phenomenon is complex one for designing the control systems to ensure the structural safety. A novel approach is developed to assess the influence of a gust structure on the aerodynamic coefficients of an airplane. The load factor enhancement because of the discrete gust is also quantified to ensure the safety margin. The Kussner’s function is used to determine the time varying increment of gust-dependent lift produced on an airplane wing entering a sharp-edged gust. A most general gust shape is assumed for the present study with quasi-steady approximation. The turbulent viscosity across the chord wise positions are quantified to calculate the velocity fluctuations because of eddies. Determining the gust influence on the fundamental lift and drag characteristics of a commercial airplane is focused in the present investigation. It is accomplished with the help of Wagner’s function in the time domain for the gust response-dependent lift. The outcome of the numerical simulation process is fully verified using the theoretical and experimental results. Solution convergence is attained for a range of input conditions and it shows that the proposed methodology is competent to assess the gust response for various airplane systems design.

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Yunus, A. M. Shiddiq, Ahmed Abu-Siada, Mohammad A. S. Masoum, Mohamed F. El-Naggar i Jian Xun Jin. "Enhancement of DFIG LVRT Capability During Extreme Short-Wind Gust Events Using SMES Technology". IEEE Access 8 (2020): 47264–71. http://dx.doi.org/10.1109/access.2020.2978909.

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Sun, Hao, Haoliang Wang, Jing Yang, Yingting Zeng, Qilin Zhang, Yubao Liu, Jiaying Gu i Shiye Huang. "Improving Forecast of Severe Oceanic Mesoscale Convective Systems Using FY-4A Lightning Data Assimilation with WRF-FDDA". Remote Sensing 14, nr 9 (19.04.2022): 1965. http://dx.doi.org/10.3390/rs14091965.

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The Fengyun-4A (FY-4A) geostationary satellite carries the Lightning Mapping Imager that measures total lightning rate of convective systems from space at high spatial and temporal resolutions. In this study, the performance of FY-4A lightning data assimilation (LDA) on the forecast of non-typhoon oceanic mesoscale convective systems (MCSs) is investigated by using an LDA method implemented in the Weather Research and Forecasting-Four Dimensional Data Assimilation (WRF-FDDA). With the LDA scheme, three-dimensional graupel mixing ratio fields retrieved from the FY-4A lightning data and the corresponding latent heating rates are assimilated into the Weather Research and Forecasting model via nudging terms. Two oceanic MCS cases over the South China Sea were selected to perform the study. The subjective evaluation results demonstrate that most of the oceanic convective cells missed by the control experiments are recovered in the analysis period by assimilating FY-4A lightning data, due to the promoted updrafts by latent-heat nudging, the more accurate and faster simulations of the cold pools, and the associated gust-fronts at the observed lightning locations. The cold pools and gust-fronts generated during the analysis period helped to maintain the development of the MCSs, and reduced the morphology and displacement errors of the simulations in the short-term forecast periods. The quantitative evaluation indicates that the most effective periods of the LDA for simulation enhancement were at the analysis time and the nowcasting (0–2 h forecast) periods.

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Alattar, Alhassan H., S. I. Selem, Hamid M. B. Metwally, Ahmed Ibrahim, Raef Aboelsaud, Mohamed A. Tolba i Ali M. El-Rifaie. "Performance Enhancement of Micro Grid System with SMES Storage System Based on Mine Blast Optimization Algorithm". Energies 12, nr 16 (13.08.2019): 3110. http://dx.doi.org/10.3390/en12163110.

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Frequency control represents a critically significant issue for the enhancement of the dynamic performance of isolated micro grids. The micro grid system studied here was a wind–diesel system. A new and robust optimization technique called the mine blast algorithm (MBA) was designed for tuning the PID (proportional–integral–differential) gains of the blade pitch controller of the wind turbine side and the gains of the superconducting magnetic energy storage (SMES) controller. SMES was implemented to release and absorb active power quickly in order to achieve a balance between generation and load power, and thereby control system frequency. The minimization of frequency and output wind power deviations were considered as objective functions for the PID controller of the wind turbine, and the diesel frequency and power deviations were used as objective functions for optimizing the SMES controller gains. Different case studies were considered by applying disturbances in input wind, load power, and wind gust, and sensitivity analysis was conducted by applying harsh conditions with varying fluid coupling parameter of the wind–diesel hybrid system. The proposed MBA–SMES was compared with MBA (tuned PID pitch controller) and classical PI control systems in the Matlab environment. Simulation results showed that the MBA–SMES scheme damped the oscillations in the system output responses and improved the system performance by reducing the overshoot by 75% and 36% from classical and MBA-based systems, respectively, reduced the settling time by 45% compared to other systems, and set the final steady-state error of the frequency deviation to zero compared to other systems. The proposed scheme was extremely robust to disturbances and parameter variations.

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Mahoney, Kelly M., Gary M. Lackmann i Matthew D. Parker. "The Role of Momentum Transport in the Motion of a Quasi-Idealized Mesoscale Convective System". Monthly Weather Review 137, nr 10 (1.10.2009): 3316–38. http://dx.doi.org/10.1175/2009mwr2895.1.

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Abstract Momentum transport is examined in a simulated midlatitude mesoscale convective system (MCS) to investigate its contribution to MCS motion. Momentum budgets are computed using model output to quantify the role of specific processes in determining the low-level wind field in the system’s surface-based cold pool. Results show that toward the leading convective line of the MCS and near the leading edge of the cold pool, the momentum field is most strongly determined by the vertical advection of the storm-induced perturbation wind. Across the middle rear of the system, the wind field is largely a product of the pressure gradient acceleration and, to a lesser extent, the vertical advection of the background environmental (i.e., base state) wind. The relative magnitudes of the vertical advection terms in an Eulerian momentum budget suggest that, for gust-front-driven systems, downward momentum transport by the MCS is a significant driver of MCS motion and potentially severe surface winds. Results further illustrate that the contribution of momentum transport to MCS speed occurs mainly via the enhancement of the cold pool propagation speed as higher-momentum air from aloft is transported into the surface-based cold pool.

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Letkewicz, Casey E., i Matthew D. Parker. "Impact of Environmental Variations on Simulated Squall Lines Interacting with Terrain". Monthly Weather Review 139, nr 10 (1.10.2011): 3163–83. http://dx.doi.org/10.1175/2011mwr3635.1.

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Abstract The complex evolution of convective systems crossing (or attempting to cross) mountainous terrain represents a substantial forecasting challenge. This study examines the processes associated with environments of “crossing” squall lines (which were able to redevelop strong convection in the lee of a mountain barrier) and “noncrossing” squall lines (which were not able to redevelop strong convection downstream of the barrier). In particular, numerical simulations of mature convective systems crossing idealized terrain roughly approximating the Appalachian Mountains were used to test the first-order impact of variations in the vertical wind profile upon system maintenance. By itself, the wind profile showed no ability to uniquely discriminate between simulated crossing and noncrossing squall lines; each test revealed a similar pattern of orographic enhancement, suppression, and lee reinvigoration in which a hydraulic jump deepened the system’s cold pool and renewed the low-level lifting. Increasing the mean wind led to greater enhancement of vertical velocities on the windward side of the barrier and greater suppression on the lee side. Variations in the low-level shear influenced the temperature and depth of the outflow, which in turn altered the lifting along the system’s gust front. However, in all of the wind profile tests, convection redeveloped in the lee. Additional simulations explored more marginal environments in which idealized low-level cooling or drying stabilized the downstream environment. In most such tests, the systems weakened but the presence of CAPE aloft still enabled the systems to survive in the lee. However, the combination of a stronger mean wind with diminished CAPE and increased convective inhibition (CIN) was ultimately found to eliminate downstream redevelopment and produce a noncrossing mesoscale convective system (MCS). Within these experiments, the ability of a squall line to cross a barrier similar to the Appalachians is primarily tied to the characteristics of the downstream thermodynamic environment; however, as the lee thermodynamic environment becomes less favorable, the mean wind exerts a greater influence on system intensity and redevelopment.

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Lin, Fangjun, Yan Liu, Trina Rudeski-Rohr, Naima Dahir, Ashley Calder i Timothy A. Gilbertson. "Adiponectin Enhances Fatty Acid Signaling in Human Taste Cells by Increasing Surface Expression of CD36". International Journal of Molecular Sciences 24, nr 6 (18.03.2023): 5801. http://dx.doi.org/10.3390/ijms24065801.

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Adiponectin, a key metabolic hormone, is secreted into the circulation by fat cells where it enhances insulin sensitivity and stimulates glucose and fatty acid metabolism. Adiponectin receptors are highly expressed in the taste system; however, their effects and mechanisms of action in the modulation of gustatory function remain unclear. We utilized an immortalized human fungiform taste cell line (HuFF) to investigate the effect of AdipoRon, an adiponectin receptor agonist, on fatty acid-induced calcium responses. We showed that the fat taste receptors (CD36 and GPR120) and taste signaling molecules (Gα-gust, PLCβ2, and TRPM5) were expressed in HuFF cells. Calcium imaging studies showed that linoleic acid induced a dose-dependent calcium response in HuFF cells, and it was significantly reduced by the antagonists of CD36, GPR120, PLCβ2, and TRPM5. AdipoRon administration enhanced HuFF cell responses to fatty acids but not to a mixture of sweet, bitter, and umami tastants. This enhancement was inhibited by an irreversible CD36 antagonist and by an AMPK inhibitor but was not affected by a GPR120 antagonist. AdipoRon increased the phosphorylation of AMPK and the translocation of CD36 to the cell surface, which was eliminated by blocking AMPK. These results indicate that AdipoRon acts to increase cell surface CD36 in HuFF cells to selectively enhance their responses to fatty acids. This, in turn, is consistent with the ability of adiponectin receptor activity to alter taste cues associated with dietary fat intake.

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Frame, Jeffrey, i Paul Markowski. "The Interaction of Simulated Squall Lines with Idealized Mountain Ridges". Monthly Weather Review 134, nr 7 (1.07.2006): 1919–41. http://dx.doi.org/10.1175/mwr3157.1.

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Abstract Numerical simulations of squall lines traversing sinusoidal mountain ridges are performed using the Advanced Regional Prediction System cloud-resolving model. Precipitation and updraft strength are enhanced through orographic ascent as a squall line approaches a ridge. The simulated squall line then weakens as it descends the ridge because some of the cold pool is blocked by the terrain, resulting in less lift along the gust front and weaker convective cells. The flow within the cold pool accelerates slightly and the depth of the cold air decreases owing to upstream blocking, transitioning the flow in the cold pool head from subcritical to supercritical, then back to subcritical at the bottom of the ridge. A hydraulic jump forms when the flow transitions the second time, enabling the development of a new convective line downwind of the mountain. These new updrafts grow and eventually replace the older updrafts that weakened during descent. This process results in the discrete propagation of a squall line just downstream of a ridge, resulting in the formation of rain shadows downstream from topographic features. Discrete propagation only occurs if a ridge is of sufficient height, however. This replacement process repeats itself if a squall line encounters multiple ridges. The risk of damaging winds from a squall line is greater on the lee side of ridges and on the top of high ridges. These terrain-forced intensity fluctuations increase with mountain height, because the higher terrain permits even less cold air to flow over it. A wider ridge results in a more gradual orographic enhancement and downslope-induced weakening.

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Lee, S. S., L. J. Donner i J. E. Penner. "Thunderstorm and stratocumulus: how does their contrasting morphology affect their interactions with aerosols?" Atmospheric Chemistry and Physics Discussions 10, nr 2 (12.02.2010): 4305–43. http://dx.doi.org/10.5194/acpd-10-4305-2010.

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Abstract. It is well-known that aerosols affect clouds and that the effect of aerosols on clouds is critical for understanding human-induced climate change. Most climate model studies have focused on the effect of aerosols on warm stratiform clouds (e.g., stratocumulus clouds) for the prediction of climate change. However, systems like the Asian and Indian Monsoon, storm tracks, and the intertropical convergence zone, play important roles in the global hydrological cycle and in the circulation of energy and are driven by thunderstorm-type convective clouds. Here, we show that the different morphologies of these two cloud types lead to different aerosol-cloud interactions. Increasing aerosols are known to suppress the conversion of droplets to rain (i.e., so-called autoconversion). This increases droplets as a source of evaporative cooling, leading to an increased intensity of downdrafts. The acceleration of the intensity of downdrafts is larger in convective clouds due to their larger cloud depths (providing longer paths for downdrafts to follow to the surface) than in stratiform clouds. More accelerated downdrafts intensify the gust front, leading to significantly increased updrafts, condensation and thus the collection of cloud liquid by precipitation, which offsets the suppressed autoconversion. This leads to an enhancement of precipitation with increased aerosols in convective clouds. However, the downdrafts are less accelerated in stratiform clouds due to their smaller cloud depths, and they are not able to induce changes in updrafts as large as those in convective clouds. Thus, the offset is not as effective, and this allows the suppression of precipitation with increased aerosols. Thus aerosols affect these cloud systems differently. The dependence of the effect of aerosols on clouds on the morphology of clouds should be taken into account for a more complete assessment of climate change.

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Rozprawy doktorskie na temat "Gust Enhancement"

Chaffee, Kathleen Elizabeth. "'Amplifying' the NMR signatures of host-guest interactions and molecular structure using liquid-crystalline matrices and polarization enhancement of nuclear spins". OpenSIUC, 2008. https://opensiuc.lib.siu.edu/dissertations/250.

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Nuclear magnetic resonance (NMR) spectroscopy has been extensively used to investigate the structure and dynamics of host-guest systems. NMR spectroscopy has gained attention because of its high spectral information content for studies of molecules in the solid state and in solution. However, the main weakness of NMR is the inherent low detection sensitivity. Host-guest interactions are weak; therefore these interactions can be particularly difficult to study due to weak spectral response. NMR methods are currently the best solution for measuring these responses with atomic-scale precision. Improving upon these limitations is the main goal of this dissertation research using laser-polarized xenon, liquid crystals, and polarization exchange pulse sequences. The first five chapters review the basics of NMR spectroscopy that is used throughout this dissertation. Chapters one and two concern the fundamental elements of liquid-state and liquid-crystal NMR spectroscopy. The third chapter deals with the properties of organic thermotropic and lyotropic liquid crystals including the ZLI 1132 and PBLG. Chapter four presents the theoretical and experimental aspects of optical pumping laser-polarized xenon and properties of xenon. An overview of the dissertation research is described in chapter six. Chapter seven describes the procedures for synthesizing many of the cryptophanes used in the NMR experiments in this dissertation. The cryptophanes synthesized include cryptophane-A, cryptophane-223, and cryptophane-E as well as the water-soluble derivatives of each. The eighth and ninth chapters investigate the binding kinetics of hydrocarbon and hydrogen gases to cryptophane-111 in organic solutions. Chapter ten illustrates the utility of liquid crystalline-aligned cryptophanes (bis- and cryptophane-A) reintroducing dipolar couplings in solution. Chapter eleven describes the exploitation of the reintroduced dipolar coupling of the guest molecule to transfer the abundant 1H nuclear spin magnetization to the rare 13C spins to enhance NMR detection sensitivity using an adiabatic Hartmann-Hahn cross polarization pulse sequence. Chapter twelve describes cryptophanes of varying cavity size to probe the host-guest dynamic coupling (with chloroform as a guest ligand) aligned in PBLG. Finally, chapter thirteen introduces preliminary xenon @ cryptophanes aligned in liquid crystals to achieve intermolecular polarization transfer.

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Chaffee, Kathleen E. "'Amplifying' the NMR signatures of host-guest interactions and molecular structure using liquid-crystalline matrices and polarization enhancement of nuclear spins /". Available to subscribers only, 2008. http://proquest.umi.com/pqdweb?did=1674093171&sid=7&Fmt=2&clientId=1509&RQT=309&VName=PQD.

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Thesis (Ph. D.)--Southern Illinois University Carbondale, 2008.
"Department of Chemistry and Biochemistry." Keywords: Cross-polarization, Cryptophanes, Host-guest chemistry, Liquid crystals, Supramolecular, Host-guest interactions, Polarization, Nuclear spins. Includes bibliographical references (p. 172-185). Also available online.

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Gupta, Dipendra. "Gust Rejection in Insect Flight". Thesis, 2020. https://etd.iisc.ac.in/handle/2005/4518.

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Large commercial and military aircraft can fly in turbulent wind conditions except in extreme weather events like cyclones. Smaller man-made vehicles like Micro aerial vehicles (MAVs) and Nano aerial vehicles (NAVs) are more susceptible to normal fluctuations in wind speed encountered in the environment, and thus more difficult to control. Insects, on the other hand, stabilize themselves quickly in the presence of gustiness normally found in the atmosphere. However, very few studies have been carried out to understand the impact of gusts and turbulence on the flight performance of insects. Keeping this practical relevance in mind and to fundamentally understand the flight stability of insects under gusty environments, we investigated the flight of a freely flying insect (black soldier fly) subjected to a discrete head-on aerodynamic gust under controlled laboratory condition. Gust was generated in the form of a vortex ring which, unlike conventional methods of perturbation, is well studied and highly controllable. The flow properties of the vortex ring were characterized using flow visualization and studying the motion of a light bead. Reynolds number of the vortex ring, based on its average propagation velocity and nozzle exit diameter, was 15000, while that of fly, based on its wingtip velocity and mean wing chord, was 1100. Flight motion of the fly was recorded using two highspeed cameras, and body and wing kinematics were analyzed for cases. In response to the gust, we observed some common features in the cases analyzed: 1) asymmetry in the wing stroke amplitude, 2) large change in the body roll angle, by as much as 160°, that happened on an average, in two wing beats (~ 20 𝑚𝑠), and with the recovery in about 9 wing beats, 3) change to pitch down attitude, and 4) deceleration in flight direction. The ability to respond at such a short time scale and use of both passive and active control responses to gusts give some insight into the flight control strategies of insects. This study will help in better design of MAVs and NAVs to respond to gusts and unsteadiness in the natural environment.

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Ho, Chen-wei, i 何振偉. "The Study of Laser-Induced Molecular Reorientation and the Enhancement of Nonlinearity of Dye in the Isotropic Phase of Guest-Host Dye-Doped Liquid Crystal". Thesis, 2004. http://ndltd.ncl.edu.tw/handle/43029472952198651478.

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碩士
國立中山大學
物理學系研究所
92
The laser-induced molecular reorientation effect of guest-host dye-doped liquid crystals in isotropic phase has been studied by measuring the signals of optical Kerr effect using pulsed frequency-doubling Nd:YAG laser as a pumping source. The critical behavior near the isotropic-nematic transition has been observed when the temperature approaches to the phase transition of liquid crystal. The relaxation time constant is about several hundreds of ns as the temperature is far above the clearing point of liquid crystals and that is longer than 1500 ns as the temperature is close to the clearing point of liquid crystals. According to Landau’s second phase transition theory, the interaction between liquid crystal molecules will be increased and the nonlinearity effect of liquid crystal will be enhanced when the temperature is near the clearing point of liquid crystal. The relaxation time constant of molecular reorientation is a function of viscosity and temperature of liquid crystal, the relationship can be fitted asη0*exp(f/T)*(1/T-T*),where η0 is the viscosity coefficient and T* is the clearing point of the sample. The optical Kerr signal is found to be proportional to the energy density of pumping source. The optical Kerr signal can be sustained as long as 20μs when the energy density of pumping source reaches to 1J/cm sq. The enhancement of molecular reorientation effect is also observed by increasing the concentration of dye.

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Części książek na temat "Gust Enhancement"

Mujjuni, Francis, Tom Betts i Richard E. Blanchard. "Application of Observational Weather Data in Evaluating Resilience of Power Systems and Adaptation to Extreme Wind Events". W Springer Proceedings in Energy, 127–36. Cham: Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-30960-1_13.

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AbstractIn Great Britain, 70% of wind-related faults on the transmission power network are attributed to the top 1% gusts. These faults cause outages to millions of customers and have extensive cascading impacts. This study illustrated the application of historical ground measured wind data in a multi-phase resilience analysis process by: (i) projecting an extreme wind event, (ii) assessing components’ vulnerabilities, (iii) analysing system’s response, (iv) quantifying baseline resilience, and (v) evaluating the effectiveness of selected adaptation measures. The extreme event was modelled as a ubiquitous 100-year return gust event impacting upon the operations of the Reduced Great Britain transmission network test case. The results show an unmet demand of about 569 GWh/Week. Adaptation measures were necessary for 60% of transmission corridors with responsiveness improving resilience by 70%, robustness by 55%, and redundancy by 35%. The study implies that resilience enhancement can be prioritized within high potency corridors and organisational resilience could prove to be more effective than infrastructural and operational resilience.

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El-Hindawy, Marwa. "Potentials of Biowaste Carbohydrates in Gut Health Enhancement". W Mediterranean Fruits Bio-wastes, 29–43. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-84436-3_2.

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Echegoyen, Luis, George W. Gokel, Lourdes E. Echegoyen, Zhi-Hong Chen i Hyunsook Yoo. "Electrochemical Switching in Reducible Lariat Ethers: from Cation Binding Enhancements to Electrochemically-Mediated Transport". W United States-Japan Seminar on Host-Guest Chemistry, 257–66. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-0969-4_27.

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Tajima, Shigeyuki, Kenichi Takane i Hiroshi Kouchi. "Uninfected cell specific enhancement of a nodulin-35 genomic gene expression in soybean nodules. Evidences by RT-PCR and chimeric promoter region: GUS reporter gene analysis using transgenic hairy root system of soybean". W Plant Nutrition for Sustainable Food Production and Environment, 203–4. Dordrecht: Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-009-0047-9_49.

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"Conversations on Group Concept Mapping With Guest Researchers: Introduction". W Conversations About Group Concept Mapping: Applications, Examples, and Enhancements, 71–76. 2455 Teller Road, Thousand Oaks California 91320: SAGE Publications, Inc, 2018. http://dx.doi.org/10.4135/9781506329161.n4.

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Ashwin, Bosco Christin Maria Arputham, Venkatesan Sethuraman i Paulpandian Muthu Mareeswaran. "Luminescent Cyclodextrin Systems and Their Applications". W Photophysics of Supramolecular Architectures, 1–30. BENTHAM SCIENCE PUBLISHERS, 2022. http://dx.doi.org/10.2174/9789815049190122010004.

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<div>This chapter explains the most recent development on different luminophore</div><div>tethered cyclodextrin (CD), a cyclic polysaccharide and these applications in distinct</div><div>areas. The host-guest inclusion complexation studies of CD with different guest</div><div>molecules using fluorescence techniques are discussed. The hybrid materials of CD in</div><div>the detection of biological analytes, toxic compounds and in-vivo bio-imaging</div><div>applications are discussed. The compatibility nature of CD leads to its usage in drug</div><div>delivery and the controlled drug dosage using CDs is explained. The interesting usage</div><div>of CDs in counterfeit recognition and tunable emission are emphasised. The dimers and</div><div>self-assemblies of CDs utilized for the enhancement of photophysical properties are</div><div>discussed in detail. The CD hybrid materials exhibited numerous usage in essential</div><div>needs.</div>

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Sikandar, Arbab. "Use of Bacillus Subtilis Probiotics as Non-Antibiotic Gut Modulator and Growth Promoter in Broiler Chickens". W Advanced Studies in the 21st Century Animal Nutrition. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.99400.

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Wide range of Antibiotics is being used as feed additives in Animal industry in order to get rid from pathogens and as growth promoters in developing world. But after the suggested prohibition on using antibiotics, products such as probiotics are getting substantial importance in nutrition because of their non-resistant and non-residual possessions. Basic aim of the chapter is to highlight fruitful effects of Bacillus Subtilis as non-antibiotic gut modulator and growth promoter in broiler chickens. Probiotics are the living culture of microorganisms. They flourish in the gut of the host and fortify the growth of valuable commensals in the digestive tract by minimizing the destruction triggered by pathogens, boost up the immune system, supporting the integrity of the gut mucosa and maintain a stability and balance of normal microflora. Probiotics can be used as best substitute to conventional antimicrobial therapy. In addition, it has been observed that probiotics plays a role in growth enhancement by augmenting useful enzymes in the body and promote the growth of other normal commensals such as Lactobacillus and having effect on gut luminal pH. Probiotics are quite active against intestinal pathogens in several ways, viz. including improved immune elimination, competing for mucosal attachment, striving for crucial nutrients, or producing antimicrobial complexes contrary to numerous enteropathogens. It can be concluded that B. Subtilis has the ability to modulate gut and immune system histophysiology and histomorphology and can be used as safe antimicrobial candidate in poultry nutrition. Knowledge of such possessions of the B. Subtilis as probiotics and the mechanisms of action may enable the researchers to manipulate the use of such alternatives for better growth production, and safe and healthy poultry industry.

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James, Stephen, i Emmanuel Hauli. "Holistic Management Education at Tanzanian Rural Development Planning Institute". W Management Education for Global Leadership, 112–36. IGI Global, 2017. http://dx.doi.org/10.4018/978-1-5225-1013-0.ch006.

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Holistic Management Education (HME) develops ability of managing the entirety. Objectives of this chapter were to examine HME benchmarks and determine laggards in Human Resource Planning and Management (HRPM) programme at the institute. Methods of data collection included documentary review, participant observation and in-depth interview. Sample size was fifty students and two lecturers as key informants. Judgmental sampling procedure was used for respondents. The chapter found HME benchmarks in HRPM including: integrated curriculum consisting of stakeholders' collaboration in curriculum formulation, holistic vision, mission, objectives, multidisciplinary modules, integrative assessment methods, active pedagogical learning methods and conducive learning space. Laggards in HME included inadequate provision of dormitories and inadequate use of guest speaker learning method in classrooms. Taking advantage of prevailing HME benchmarks and capacity building of lecturers on HME were solutions for HME enhancement. Management mobilization of resources for supporting HME activities and lecturers' commitment to their career duties were recommendations for strengthening HME.

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Lakshmi Ragavan, Mangala, i Nilanjana Das. "Mechanism of Probiotic Action in Anticancer Immunity". W Probiotics in Anticancer Immunity, 41–69. BENTHAM SCIENCE PUBLISHERS, 2023. http://dx.doi.org/10.2174/9789815124781123030005.

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Gut microbiota plays a significant role in human physiology which includes metabolism, nutrition uptake and immune responses. The imbalance of gut microbiota leads to various disorders or diseases like inflammatory bowel disease, infectious diseases, cancer and obesity. Cancer is one of the major health problems worldwide. Moreover, colorectal cancer (CRC) is the most common cancer in humans which is considered the fourth leading health problem worldwide. The role of probiotics in the regulation of CRC includes enhancement of immune barrier function, intestinal immune state, inhibition of enzymatic activity, cell proliferation and apoptosis, redox homeostasis, and modifying the composition of intestinal microbiota. It can be treated using chemotherapy, radiotherapy, or surgical eradication. However, these treatments may cause the demolition of the intestinal mucosal barrier system as well as dysfunction of the immune system in cancer patients. Hence, biotherapeutic drugs are used along with probiotics and their metabolites viz. polysaccharides, short-chain fatty acids, and inhibitory compounds like proteins and other substances to treat cancer. Lactobacillus rhamnosus GG (LGG) is a widely used probiotic strain in oncology. Also, it has been proven to exert beneficial effects on cancer patients after anticancer therapy. Therapeutic potential of the gut microbiome in cancer treatment via the administration of probiotic supplementations is being investigated using several clinical studies. Probiotic-incorporated biotheraupetic drugs are considered an alternative medicine for various types of cancer. The effectiveness of biotheraupetic drugs mainly depends on the dosage of probiotic strain and their exposure time. However, the mechanism behind the role of probiotics in cancer immunity is unclear so far. The present work summarizes the action of probiotics in anticancer immunity. <br>

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Gupta, Charu, Consuelo Pacheco i Dhan Prakash. "Lactoserum". W Nutraceutical and Functional Foods in Disease Prevention, 432–56. IGI Global, 2019. http://dx.doi.org/10.4018/978-1-5225-3267-5.ch015.

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Lactoserum, a byproduct of cheese industry, is rich in nutrients, but it is discharged directly into the environment. It has many human applications that promise to be a complete nutraceutical for the future generations. It is of high nutritive value and its products can be used as functional ingredients in food and pharmaceutical applications and as nutrients in dietary and health foods. They contain full spectrum of amino acids including essential and branched-chain amino acids which are important in tissue growth and repair. The other biological activities of lactoserum are antibiotic, anti-cancer, anti-toxin, immune-enhancer, and prebiotic (growth enhancement of gut microflora such as bifidobacteria). Lactoserum can thus be used as nutraceutical in various products like infant formulas, food supplements, cheese spreads, sports bars, and beverages to meet a variety of health goals for people of all ages, including animal feed.

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Streszczenia konferencji na temat "Gust Enhancement"

Chen, P. C., Boris Moulin, Erich Ritz, D. H. Lee i Z. Zhang. "CFD-Based Aeroservoelastic Control for Supersonic Flutter Suppression, Gust Load Alleviation, and Ride Quality Enhancement". W 50th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2009. http://dx.doi.org/10.2514/6.2009-2537.

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Khalil, Ahmed, i Nicolas Fezans. "Performance Enhancement of Gust Load Alleviation Systems for Flexible Aircraft using H∞ Optimal Control with Preview". W AIAA Scitech 2019 Forum. Reston, Virginia: American Institute of Aeronautics and Astronautics, 2019. http://dx.doi.org/10.2514/6.2019-0822.

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Khalil, Ahmed, i Nicolas Fezans. "Correction: Performance Enhancement of Gust Load Alleviation Systems for Flexible Aircraft using H∞ Optimal Control with Preview". W AIAA Scitech 2019 Forum. Reston, Virginia: American Institute of Aeronautics and Astronautics, 2019. http://dx.doi.org/10.2514/6.2019-0822.c1.

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Moulin, Boris, Erich Ritz, P. C. Chen i D. Lee. "CFD-Based Control for Flutter Suppression, Gust Load Alleviation, and Ride Quality Enhancement for the S4T Model". W 51st AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference
18th AIAA/ASME/AHS Adaptive Structures Conference
12th. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2010. http://dx.doi.org/10.2514/6.2010-2623.

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Gordnier, Raymond E., i Peter J. Attar. "Impact of Flexibility on the Aerodynamics of an Aspect Ratio Two Membrane Wing". W ASME 2012 Fluids Engineering Division Summer Meeting collocated with the ASME 2012 Heat Transfer Summer Conference and the ASME 2012 10th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/fedsm2012-72296.

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Development of an aeroelastic solver with application to flexible membrane wings for micro air vehicles is presented. A high-order (up to 6th order) Navier-Stokes solver is coupled with a geometrically nonlinear p-version Reissner-Mindlin finite element plate model to simulate the highly flexible elastic membrane. An implicit LES approach is employed to compute the mixed laminar/transitional/turbulent flowfields present for the low Reynolds number flows associated with micro air vehicles. Computations are performed for an aspect ratio two membrane wing at angles of attack α = 10°, 16° and 23° for a Reynolds number, Re = 24,300. Comparisons of the computational results with experimental PIV and surface deflection measurements demonstrated reasonable agreement. Reduced separation and enhanced lift are obtained due to favorable interactions between the flexible membrane wing and the unsteady flow over the wing. The impact of flexibility on the aerodynamic performance comes primarily from the development of mean camber with some further effects arising from the interaction between the dynamic motion of the membrane and the unsteady flowfield above. At lower angles of attack this lift enhancement comes at the cost of reduced L/D. The nose-down pitching moment increases with flexibility at the lowest angle of attack but is reduced for the higher two angles of attack. These results suggest that membrane flexibility might provide a means to reduce the impact of strong gust encounter by maintaining lift and reducing the effect of the gust on pitching moment.

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Blower, Christopher J., i Adam M. Wickenheiser. "The Variations in Active Panel Location and Number for a Bioinspired Aircraft Gust Alleviation System". W ASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/smasis2012-7994.

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This paper presents the development of a biomimetic closed-loop flight controller that integrates gust alleviation and flight control into a single distributed system of feather-like panels over the upper and lower surfaces. This bio-inspired gust alleviation system (GAS) mimics the techniques used by birds to respond to turbulent and gusting airflow. The GAS design replicates the profile of a bird’s wing through the installation of feather-like panels across the upper and lower surfaces of the airfoil, and replacement of the trailing-edge flaps. While flying through gusts, the flight controller uses a linear quadratic regulator to perform continuous adjustments to the local states through active deflection of electromechanical feathers. This system consequently offers a wide range of flap configurations that enable the vehicle to perform gust response maneuvers unachievable by standard aircraft. The GAS is developed using a 2D adaptive panel method that enables analysis of the airfoil’s aerodynamic performance during all flap configurations. The airfoil’s dynamic model is simulated to calculate the disturbances incurred during gusting flows. The flight controller tracks the vehicles velocity, angle of attack and position, and continuously performs adjustment to the orientation of each flap to induce the corrective responses to inbound gusts. The replacement of standard single trailing edge profile with the integration of a dual trailing edge (DTE) configuration offers a reduction of the aircraft’s deviation from the target flight path through the introduction of aero-braking during strong longitudinal gusts. The introduction of 6 additional surface flaps offers new flap configurations capable of minimizing the disturbances in the aircraft’s global states. Non-linear and linear dynamic models of the 8-flap GAS are compared to a traditional single control surface baseline wing and the DTE configuration. The feedback loops synthesized depend on the inertial changes of the global states; however, variations in flap configuration are compared. The integration of an 8-flap GAS provides enhancements to maneuverability and stability in turbulent intensive environments.

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"ENHANCEMENT OF WEB BROWSER PROGRAMMING WITH GUEST - Visual Programinng Tool for Non-programmers". W 4th International Conference on Web Information Systems and Technologies. SciTePress - Science and and Technology Publications, 2008. http://dx.doi.org/10.5220/0001523100500057.

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Zhuang, Xiaowei, Ralf Muenster, M. Jarasch i Yuen-Ron Shen. "Guest-host-interaction-induced enhancement of optical nonlinearity of liquid crystals and isotropic liquids". W SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, redaktor Iam-Choon Khoo. SPIE, 1998. http://dx.doi.org/10.1117/12.326897.

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Sozuer, H. S., J. W. Haus i R. Inguva. "How reliable are photonic band calculations?" W OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1991. http://dx.doi.org/10.1364/oam.1991.mq2.

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We have examined several methods of performing photonic band structure calculations, compared those methods with one another, and studied their rate of convergence. When the medium has a host/guest topology we found that the convergence rate is vastly different for the different methods we studied. The wrong method choice for a given medium can lead to inaccuracies of as much as 50%. This is a direct consequence of the discontinuous nature of the dielectric function and the electromagnetic fields. In the diamond lattice,1 which was reported to have a 15% band gap between the second and third bands, we find at most a 3% band gap at the maximum volume filling fraction and none for the lower filling fractions. We attribute these discrepancies to inadequate numerical convergence of the previous calculations.2 Our approach is novel in that it looks for consistency between the various methods while gradually employing up to 1100 plane waves. The trend thus observed shows that the gap is closing. Results are also reported for spheroidal particles on an FCC lattice. We found that when the medium has a host/guest topology, the effective dielectric constant is well modeled by the Maxwell-Garnett theory. The enhancement of the nonlinear optical response of the particles is also examined.

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Sarkas, Harry W., Charles D. Merritt i Zakya H. Kafafi. "Preparation, Optical Spectroscopy, and Fluorescence of Molecular Organic Composites for Light-Emitting Diodes". W Organic Thin Films for Photonic Applications. Washington, D.C.: Optica Publishing Group, 1995. http://dx.doi.org/10.1364/otfa.1995.md.35.

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Electroluminescence from small organic molecules has been known for some time. Thirty years ago, Helfrich and Schneider reported blue-violet electroluminescence in anthracene with an external quantum efficiency as high as 8%.1 This quantum efficiency is much better than that for the best polymer-based light-emitting diode (LED) reported to date.2 In spite of the superior quantum efficiency of molecular-based electroluminescent devices, no major progress was achieved until fairly recently when Tang and VanSlyke reported the first low-voltage organic LED with an external quantum efficiency of 1% (number of photons per electron).3 The emitting layer in this device consists of a thin layer of the metal complex, tris (8-hydroxyquinolinato) aluminum (AlQ3). Later, Littman and Martie showed an enhancement in the electroluminescence quantum efficiency of AlQ3 by doping it with the highly fluorescent laser dyes, Coumarin 540, Coumarin 343, and DCM.4 The paper focuses on a new class of organic composites consisting of highly fluorescent guest molecules dispersed in AlQ3. The electronic and optical properties of organic nanostructures based on these materials are studied, as functions of the luminescent center concentration, via optical and fluorescence spectroscopies. Photoluminescence quantum yields are measured and used to probe the efficiency of energy transfer between host and guest molecules.

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Raporty organizacyjne na temat "Gust Enhancement"

Kapulnik, Yoram, Maria J. Harrison, Hinanit Koltai i Joseph Hershenhorn. Targeting of Strigolacatones Associated Pathways for Conferring Orobanche Resistant Traits in Tomato and Medicago. United States Department of Agriculture, lipiec 2011. http://dx.doi.org/10.32747/2011.7593399.bard.

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This proposal is focused on examination of two plant interactions: parasitic with Orobanche, and symbiosis with arbuscular mycorrhiza fungi (AMF), and the involvement of a newly define plant hormones, strigolactones (SLs), in these plant interactions. In addition to strigolactones role in regulation of above-ground plant architecture, they are also known to be secreted from roots, and to be a signal for seed germination of the parasitic plants Orobanche. Moreover, secreted strigolactones were recognized as inducers of AMFhyphae branching. The present work was aimed at Generation of RNAi mutants of both tomato and Medicago, targeting multiple genes that may be involved in strigolactone production, carotenoid biosynthesis pathway, Pi signaling or other metabolic pathways, and hence affect AMF colonization and/or Orobanche resistance. Following the newly formed and existing RNAi mutants were examined for AMF colonization and Orobanche resistance. At the first phase of this project Orobanche seed germination assays and AMF colonization were examined in intact plants. These assays were shown to be effective and resulted with enhancement of Orobanche seed germination and AMF colonization in WT tomato plants, whereas roots of strigolactones impaired lines did not result with Orobanche seed germination and mycorrhiza colonization. Unexpectedly, root organ cultures (ROC) that were produced from the same wild type (WT) and mutant lines did not induce the Orobanche seed germination and AMFhyphal branching. This implies that under in vitro conditions ROC cultures are missing an important component for induction of Orobanche seed germination and AMFhyphal branching. In another line of experiments we have tested transgenic lines of Medicagotruncatula for AMFhuyphal branching and Orobanche seed germination assays. These lines included lines silenced for a GRAS transcription factor (RNAi 1845), an NBS-LRR type resistance gene (RNAi 1847), a kinase (RNAi 2403) and a protein of unknown function (RNAi 2417). In all cases, five independent transgenic root lines showed altered AMFphenotypes with reduced or aberrant colonization patterns. Following, we transformed tomato plants with the M. truncatulaTC 127050 PhosphoinositidekinaseRNAi construct. Transgenic lines that contained GUS constructs were used as control. All transgenic lines showed reduced level of Orobanche seed germination, masking any strigoalctones-specific effect. The research demonstrated that SLs production may not be examined in ROC –based bioassays. It was shown by the 3 independent assays employed in this project that none of the recognized characters of SLs may be reflected in these bioassays. However, when the whole plant root exudates were examined, SLs activity in root exudates was demonstrated. Hence, it can be concluded that the presence of an intact shoot, and possibly, shoot factors, may be necessary for production of SLs in roots. Another point of interest that rises from these results is that the presence of SLs is not necessary for AMF completion of life cycle. Hence, it may be concluded that SLs are important for AMFhyphal branching, before symbiosis, but not essential for AMF colonization and life cycle completion under ROC system conditions.

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