Evaluation of Water Resources Sustainable Utilization in Wuhan Based on the Model of SUDE

SUDE model is a systematic sustainable use model based on the view of the whole life cycle of water resources. The analysis of the model water resources has been divided into four stages according to the state of motion water resourcesat different times in its life cycle, namely the water supply stage (“S”),water use phase (“U”),water collection,treatment anddrainage stage (“D”) and water return to natural ecological (ecology) environment for dilution, degradation stage (“E”).on the analysis above,SUDE theoretical model of water system has been built and corresponding evaluation index systemhas therefore been established. Then, we use entropy weight TOPSIS method to evaluate thesustainability of water resource during 2013∼2017 yearsin Wuhan, and finally the corresponding conclusions and suggestion have been drawn according to the result of evaluation in the paper.

Production of a Model Water Fountain Using Ceramics for Interior Decoration in Anambra State

Water fountains have been produced by sculptors, architects and engineers over the years in Nigeria, however the production of water fountains in ceramics is not popular and could be rarely seen in public spaces, longues and interiors of public buildings especially in Anambra State. In view of this; this project entitled “Production of a Water Fountain using Ceramics for Interior Decoration in Anambra State” was designed to enlighten the society that ceramic materials could be used for the production of water fountain instead of other media like cement and metal. Also, that water fountain when situated in the interior of the house will help in relaxation thereby reducing some tensions and stress after all day work. Data used were sourced from both primary and secondary sources. An explorative method of research was employed in the project. The processes involved in the execution of the work were showcased in detail. The study observes that majority of water fountains seen around were made using cement instead of ceramics, which is more durable, hygienic, attractive and nature friendly, hence the need for this project. This work encourages more research in this area of study.

Dynamics of moisture diffusion and adsorption in plant cuticles including the role of cellulose

Food production must increase significantly to sustain a growing global population. Reducing plant water loss may help achieve this goal and is especially relevant in a time of climate change. The plant cuticle defends leaves against drought, and so understanding water movement through the cuticle could help future proof our crops and better understand native ecology. Here, via mathematical modelling, we identify mechanistic properties of water movement in cuticles. We model water sorption in astomatous isolated cuticles, utilising three separate pathways of cellulose, aqueous pores and lipophilic. The model compares well to data both over time and humidity gradients. Sensitivity analysis shows that the grouping of parameters influencing plant species variations has the largest effect on sorption, those influencing cellulose are very influential, and aqueous pores less so but still relevant. Cellulose plays a significant role in diffusion and adsorption in the cuticle and the cuticle surfaces.

Optical Solutions of the Date–Jimbo–Kashiwara–Miwa Equation via the Extended Direct Algebraic Method

In this study, the solutions of 2 + 1 -dimensional nonlinear Date–Jimbo–Kashiwara–Miwa (DJKM) equation are characterized, which can be used in mathematical physics to model water waves with low surface tension and long wavelengths. The integration scheme, namely, the extended direct algebraic method, is used to extract complex trigonometric, rational and hyperbolic functions. The complex-valued solutions represent traveling waves in different structures, such as bell-, V-, and W-shaped multiwaves. The results obtained in this article are novel and more general than those contained in the literature (Wang et al., 2014, Yuan et al., 2017, Pu and Hu 2019, Singh and Gupta 2018). Furthermore, the mechanical features and dynamical characteristics of the obtained solutions are demonstrated by three-dimensional graphics.

Simulations of Solar Power Systems to Provide Electricity to a Model Water Desalination Plant in Floreana Island, Ecuador

This work shows the techno-economic comparison of the design of two solar photovoltaic systems: 1) on-grid (G-SPVS) and 2) off-grid (SPVS). Both schemes aim to supply electricity to a model water desalination plant located in Floreana Island, Ecuador. The annual load profiles and other operational details of the case study were previously obtained. For this research, a period of 15-years was analyzed. During this time, the maximum power of water pump system remained constant and represented the highest percentage of the electrical load, which changed each year influenced by the drinking water requirements of the population. Results from the HOMER PRO simulations showed that the SPVS produced higher surpluses of electricity. In contrast, the G-SPVS exhibited lower net present cost (NPC) and cost of energy (COE).

PENERAPAN MODEL WATER FALL DALAM MEMBANGUN SISTEM PENJUALAN BERBASIS WEB PADA NEFERTARI FLORIST BEKASI

AbstrakNefertari Florist adalah toko bunga online yang menjual karangan bunga dan melayani pengiriman keseluruh kota besar yang ada di indonesia, dalam melakukan pembelian barang ke supplier danpendataan Nefertari Florist masih menggunakan sistem manual dengan menggunakan MicrosoftExcel.Nefertari Florist membutuhkan sekali adanya suatu sistem informasi yang menunjang danmemberikan pelayanan yang memuaskan bagi para customer. Untuk itulah peneliti mencoba membuatTugas Akhir mengenai perancangan sistem pembelian berbasis web di Nefertari Florist yang sampaisaat ini belum terkomputerisasi. Pada saat ini Nefertari Florist hanya berupa perusahaan yang bergerakdalam bidang Florist. Sistem yang ada pada Nefertari Florist ini masih dilakukan secara manual, mulaidari pencatatan customer yang membeli karangan bunga, sampai penyimpanan data-data lainnya yangberhubungan dengan proses pembelian hingga sampai pembuatan laporan, sehingga memungkinkanpada saat proses berlangsung terjadi kesalahan dalam pencatatan, kurang akuratnya laporan yang dibuatdan keterlambatan dalam pencarian data-data yang diperlukan. Perancangan sistem pembelian inimerupakan solusi yang terbaik untuk memecahkan permasalahan-permasalahan yang ada padaperusahaan ini, serta dengan sistem yang terkomputerisasi dapat tercapai suatu kegiatan yang efektifdan efisien dalam menunjang aktifitas pada perusahaan ini. Sistem yang terkomputerisasi lebih baikdari sistem yang manual agar berjalan lebih efektif dan efisien serta sistem penjualan yang sekaranglebih kondusif dibandingkan dengan sistem yang terdahulu.

RESEARCH OF ENERGY EFFICIENCY OF PROCESSING BY PULSE BARRIER DISCHARGE OF WATER IN A DROP-FILM STATE

The energy efficiency of a pulsed barrier discharge in air was investigated when it treated a model water sample in a drop-film state containing an organic dye (methylene blue) with an initial concentration of 50 mg/l. The water consumption was 4 l / min, the characteristic droplet diameter was ~1 mm. Water treatment was carried out in a coaxial discharge chamber with a gas gap of 3.2 mm and additionally in an ozonation chamber. The discharge was generated by short ~ 100 ns voltage pulses of ≈26 kV, which provided a current density with an amplitude of ≈1.3 A/cm2 and a pulse energy of ≈ 140 mJ. The time of decomposition of the impurity and the energy efficiency of the discharge were investigated as a function of the pulse repetition rate of 25−300 Hz. The discharge had the highest energy efficiency at frequencies of 25-50 Hz, at which the energy yield corresponding to 50% decomposition of the impurity is about 100 g/kW h. It is shown that most of ozone, one of the main oxidants generated by the discharge, dissolves in water in the discharge chamber. The concentration of ozone at the outlet from the discharge chamber can reach 2.2 mg/l. The remaining ozone is absorbed by the model solution (about 60%) in the ozonization chamber. References 16, figures 7.

Development of new drainage factor in ECOSSE model to improve water dynamics and prediction of CO2 fluxes from drained peatlands

<p>ABSTRACT</p><p>Drained peatlands often act as carbon source and their drainage characteristics can be challenging to accommodate in biogeochemical models. This study uses the ECOSSE process-based  biogeochemical model [to simulate water-table level and CO<sub>2</sub> fluxes (heterotrophic respiration) <sub>[1]</sub>], and empirical data from two Irish drained peatlands: Blackwater and Moyarwood, which were partly rewetted (both sites are extensively described in earlier studies <sub>[2]</sub>). Here we explain details on the development of a new drainage factor with seasonal variability Dfa(i) for drained peatlands, based on our recently published work <sub>[3] </sub> that we hope can contribute towards the potential future development of IPCC Tier 3 emissions reporting. The Dfa(i) was developed using empirical data from Blackwater drained bare-peat site (BWdr) and its application was further tested at the Moyarwood site under drained (MOdr) and rewetted conditions (MOrw) <sub>[3]</sub>. The development of the Dfa(i) was carried out in three main steps <sub>[3]</sub>: 1 - identification of the ‘wt-discrepancy event’; 2 - development of Dfa without seasonal variability, and 3 - accounting for seasonal variability and development of Dfa(i). Dfa(i) was then applied to the rainfall inputs for the periods of active drainage in conjunction with the measured water-table inputs <sub>[3]</sub>. As explained in our published work <sub>[3]</sub>, the results indicate that the application of Dfa(i) could improve the model performance to predict water-table level (BWdr: r<sup>2 </sup>= 0.89 MOdr: r<sup>2 </sup>=  0.94); and CO<sub>2</sub> fluxes [BWdr: r<sup>2</sup> = 0.66 and MOdr: r<sup>2 </sup>= 0.78) under drained conditions, along with ability of the model to capture seasonal trends <sub>[2]</sub>. The model simulation of CO<sub>2</sub> fluxes at MOrw site was also satisfactory (r<sup>2</sup>=0.75); however, the MOrw water-table simulation results suggest that additional work on the water model component under rewetted conditions is still needed <sub>[3]</sub>. We further discuss our insights into potential opportunities for future additional improvements and upgrading of the ECOSSE model water module.</p><p><strong> </strong></p><p><strong>Acknowledgements</strong></p><p>The authors are grateful to the Irish Environmental Protection Agency (EPA) for funding the AUGER: Project (2015-CCRP-MS.30) under EPA Research Programme 2014–2020. Full acknowledgements are provided in Premrov et. al (2020) <sub>[3]</sub>.</p><p> </p><p><strong>Literature</strong></p><p>[1] Smith, J., et al. 2010. ECOSSE. User Manual.</p><p>[2] Renou-Wilson, F., et. al. 2019. Rewetting degraded peatlands for climate and biodiversity benefits: Results from two raised bogs. Ecol. Eng. 127:547-560.</p><p>[3] Premrov, A., D. Wilson, M. Saunders, J. Yeluripati and F. Renou-Wilson (2020). CO<sub>2 </sub>fluxes from drained and rewetted peatlands using a new ECOSSE model water table simulation approach. Sci. Total Environ. (https://doi.org/10.1016/j.scitotenv.2020.142433; on-line 2020; in print Vol. 754, 2021; under CC BY 4.0).</p>