Model Dinamik Sebagai Upaya Pencapaian Sinkronisasi Nitrogen Pada Budidaya Selada Dengan Pupuk Hijau Paitan

Lettuce (Lactuca sativa) is vegetable crop that consumed part of the leaf and harvested at a phase of vegetative. Nitrogen play important role in growth at phase of vegetative. Nitrogen in spacious have the character of easy to lose because of leaching. Increasing yield of lettuce can be done byimproving Nitrogen synchronization, that is precisely USAge moment with ready moment of N during and amount of its. The research was aimed to study of the pattern nitrogen requirement for lettuce crop, ready pattern of nitrogen by Tithonia diversifolia and design nitrogen synchronization model between lettuce crop with green manure of T. diversifolia. The research were divided in two phases that are phase research 1: Dynamic modeling for nitrogen synchronization on lettuce cultivation by green manure of T. diversifolia, and phase research 2: Fertilizer technology of high nitrogen synchronization on lettuce cultivation by green manure of T. diversifolia. The result of phase research 1 (first year research) shows that dynamic model of N requirement by lettuce crop, release and availability model of N by T. diversifolia and synchronization model of N between requirement of N lettuce with release and availability of N by T. diversifolia. The dynamic model indicate that giving 10 t ha-1 of T. diversifolia which given 2 weeks before transplanting at lettuce crop can support high result and growth because happened good synchronization of N

Determination of Excited-State Ionization Potentials for Lithium-Like Sequence Using Weakest Bound Electron Potential Model Theory

In this work, the theoretical calculation of excited-state ionization potentials for 1s 2 2p 2 D 1/2 iso-spectrum series of lithium-like elements were carried out using a weakest bound electron potential model theory for nuclear charges from Z = 3 to Z = 18. The Breit-Pauli approximation was used for relativistic contributions. The obtained values are compared with the experimental results from literature. The overall agreement between data obtained in this work and experimental data from literature can appear to be quite good being generally within 0.1% of experimental values

Fermi LAT Search for Photon Lines from 30 to 200 GeV and Dark Matter Implications

Dark matter (DM) particle annihilation or decay can produce monochromatic $\gamma$-rays readily distinguishable from astrophysical sources. $\gamma$-ray line limits from 30 GeV to 200 GeV obtained from 11 months of Fermi Large Area Space Telescope data from 20-300 GeV are presented using a selection based on requirements for a $\gamma$-ray line analysis, and integrated over most of the sky. We obtain $\gamma$-ray line flux upper limits in the range $0.6-4.5\times 10^{-9}\mathrm{cm}^{-2}\mathrm{s}^{-1}$, and give corresponding DM annihilation cross-section and decay lifetime limits. Theoretical implications are briefly discussed.Comment: 6 pages, 1 figure. Accepted for publication by The Physical Review Letter

The level of air pollution in the impact zone of coal-fired power plant (Karaganda City) using the data of geochemical snow survey (Republic of Kazakhstan)

Coal-fired power plants emissions impact the air quality and human health. Of great significance is assessment of solid airborne particles emissions from those plants and distance of their transportation. The article presents the results of air pollution assessment in the zone of coal-fired power plant (Karaganda City) using snow survey. Based on the mass of solid airborne particles deposited in snow, time of their deposition on snow at the distance from 0.5 to 4.5 km a value of dust load has been determined. It is stated that very high level of pollution is observed at the distance from 0.5 to 1 km. there is a trend in decrease of dust burden value with the distance from the stacks of coal-fired power plant that may be conditioned by the particle size and washing out smaller ash particles by ice pellets forming at freezing water vapour in stacks of the coal-fired power plant. Study in composition of solid airborne particles deposited in snow has shown that they mainly contain particulates of underburnt coal, Al-Si- rich spheres, Fe-rich spheres, and coal dust. The content of the particles in samples decreases with the distance from the stacks of the coal-fired power plant

The Numerical Solution of Fractional Differential-Algebraic Equations (FDAEs) by Haar Wavelet Functions

In this paper, the numerical solution of Fractional Differential-Algebraic Equations (FDAEs) is considered by Haar wavelet functions. We derive the Haar wavelet operational matrix of the fractional order integration and by using it to solve the Fractional Differential-Algebraic Equations. The results obtained are in good-agreement with the exact solutions. It is shown that the technique used here is effective and easy to apply

Inventory routing in a warehouse: The storage replenishment routing problem

In warehouses, storage replenishment operations involve the transportation of items to capacitated item slots in the forward storage area from reserve storage. These items are later picked from these slots as demand arises. While order picking constitutes the majority of warehouse operating costs, efficient management of replenishment operations is important to ensure the availability of the items for picking and to decrease the operating costs due to replenishment, which might be particularly higher in warehouses with fast-moving items (e.g., e-commerce warehouses or retail distribution centers). In this paper, we define the storage replenishment routing problem in a parallel-aisle warehouse, where replenishment and order picking operations are carried out in successive cycles with time limits. The aim is to determine the item slots that will be replenished and the route of the replenishment worker in each replenishment cycle, so as to minimize the total travel time and ensure the availability of items at the start of the cycle they will be picked. We present complexity results on different variants of the problem and show that the problem is -hard in general. Consequently, we adapt a heuristic approach based on a priori routing and inspired by the literature on the inventory routing problem. We use randomly generated warehouse instances to analyze the effects of different a priori routing methods and demand skewness patterns on replenishment performance, and to compare the proposed approach to benchmarks that mimic practice

Determination of Excited-State Ionization Potentials for Lithium-Like Sequence Using Weakest Bound Electron Potential Model Theory

In this work, the theoretical calculation of excited-state ionization potentials for 1s 2 2p 2 D 1/2 iso-spectrum series of lithium-like elements were carried out using a weakest bound electron potential model theory for nuclear charges from Z = 3 to Z = 18. The Breit-Pauli approximation was used for relativistic contributions. The obtained values are compared with the experimental results from literature. The overall agreement between data obtained in this work and experimental data from literature can appear to be quite good being generally within 0.1% of experimental values