scholarly journals Type and quality of energy and water in a tropical hospital

2018 ◽  
Vol 67 ◽  
pp. 04020
Author(s):  
Andreas Prasetyadi ◽  
Atit Koonsrisuk
Keyword(s):  
Cooling Tower ◽  
Water System ◽  
Continuous Operation ◽  
End User ◽  
Blow Down ◽  
Hospital System ◽  
Input And Output ◽  
Tropical Area ◽  
Starting Point

A hospital is considered an energy gobbler and a water consumer. The energy and water go for many activities in hospital system. HVAC that includes wet cooling tower is the main energy and water consumer in a hospital due to its continuous operation. Conservation of both resources partially depends on the way nexus is managed at the end user. Mapping the energy and water in term of type and quality is proposed as the starting point in managing both as nexus. This article focuses on that part in purpose of integrating energy and water system in a hospital. SUTH, a 120 beds hospital located in tropical area in Thailand that operates daily with 146 m3 water and 1.5 MW of electricity becomes the case of the study. The input and output of energy and water of each subsystem are exposed in addition to subsystems that are described in some different methods. The results show flows of energy and water as by-product that can be used for other systems. Radiology and HVAC release very low enthalpy heat that could not be managed for other utilization, but hemodialysis releases very low heat that is used for its own process. Autoclaves can releases heat that be used for laundry and its own pre-heating. HVAC release brine and distilled water through blow down system and condensation respectively. Electricity is very dominant energy supply of the hospital.

scholarly journals Optimization of side stream filters of blow-down water in cooling water system

2020 ◽  
Vol 8 (1) ◽  
pp. 1-7
Author(s):  
Amir Hossein Beigi ◽  
Ali Mousavi ◽  
Hani Sadr Hosseini
Keyword(s):  
Oil And Gas ◽  
High Efficiency ◽  
Cooling Tower ◽  
Pure Water ◽  
Water System ◽  
Cooling Water ◽  
Cooling Towers ◽  
Blow Down ◽  
Side Stream ◽  
Pass Through

Cooling towers are the main parameters for oil and gas industries. The water that circulates the system will pass through heat exchangers and surface condenser of compressor. Cooling towers operate outside; there is a high chance of debris entering the system and water via wind which therefore could lead to fouling, scaling and corrosion. In order for cooling towers to perform at high efficiency, the water has to be clean. Filtration package are the key for solving this matter. In this thesis, a new filtration package for Marjan petrochemical company has been proposed. In this design the blow down water of the cooling tower will be filtered via first a side stream filtration unit which will decrease the TSS of the water and then enters a Reverse Osmosis package which will reduce the TDS of the water. From the Hysys simulation, it has been proven that this system will produce 63 m3/hr pure water and 37 m3/hr brain water. The compositions of these water are 97% pure water and 3% debris, 96% debris and 4% water respectively. This showed that the filtration package decreased the TDS of the water to 4 ppm which is the specification of the make-up water of cooling tower. Financially, when there is no package installed, Marjan has to send COC and POC waters to Mobin Company for filtrations and then buy the RO water.

Sewers and the Quality of Canals and Ditches in Amsterdam

1993 ◽  
Vol 27 (5-6) ◽  
pp. 61-67 ◽  
Author(s):  
E. Jacobs ◽  
J. W. van Sluis
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Sediment Quality ◽  
Water System ◽  
Water Systems ◽  
Sewer System ◽  
Water And Sediment ◽  
Combined Sewer ◽  
Water And Sediment Quality

The surface water system of Amsterdam is very complicated. Of two characteristic types of water systems the influences on water and sediment quality are investigated. The importance of the sewer output to the total loads is different for both water systems. In a polder the load from the sewers is much more important than in the canal basin. Measures to reduce the emission from the sewers are much more effective in a polder. The effect of these measures on sediment quality is more than the effect on water quality. Some differences between a combined sewer system and a separate sewer system can be found in sediment quality.

Application of membrane technology in the pretreatment of cheese dairies wastes and co-treatment in a municipal conventional biological unit

1997 ◽  
Vol 36 (2-3) ◽  
pp. 361-367 ◽  
Author(s):  
Eleftheria Papachristou ◽  
Costas T. Lafazanis
Keyword(s):  
Cheese Whey ◽  
Treatment Plant ◽  
Membrane Technology ◽  
Biological Unit ◽  
Urban Sewage ◽  
Dairy Wastes ◽  
Starting Point ◽  
Quality Of Milk ◽  
Cheese Production

A great number of cheese dairies and dairy industries in Greece are disposing their wastes, mainly cheese whey, either on land or in surface receivers, in large quantities creating a major environmental problem. A typical agricultural and pastoral provincial town of 70,000 inhabitants, Trikala, became the starting point of this research. A co-treatment of the urban sewage and the dairy wastes in the municipal treatment plant was recommended. The successful application of the above statement is based primarily on the pretreatment of the cheese dairies wastes. So far for cheese whey the recovery of the lactose serum in the contemporary central unit applying membrane technology has been suggested. As far as the wastewaters of the washing and refrigeration are concerned a pretreatment is required for the defatting in a grease trap, the grating, the adjustment of pH and the equalisation in an appropriate tank. Finally, this research has also focussed on the importance of membrane technology in improving the quality of milk and cheese production.

PENERAPAN PEMBELAJARAN METODE DISKUSI UNTUK MENINGKATKAN AKTIVITAS BELAJAR SISWA PADA PEMBELAJARAN IPS TERPADU DI KELAS VIII.B SMP NEGERI 5 KOTA SOLOK

2019 ◽  
Vol 5 (1) ◽  
pp. 35-42
Author(s):  
Erma Yenis
Keyword(s):  
Student Learning ◽  
Learning Outcomes ◽  
Learning Process ◽  
Teaching And Learning ◽  
Student Learning Outcomes ◽  
Learning Activities ◽  
Good Teaching ◽  
Starting Point ◽  
Class Viii

Abstractlearning process  good teaching  can create a situation that allows children to learn, so that is the starting point of the success of teaching. The low quality of education depends on the management of the teaching and learning process which can be interpreted as being less effective in the teaching and learning process, the causes: (1) Low learning activities, (2) Inadequate facilities and infrastructure. The case in Solok City Middle School, the low level of student learning activities allegedly influenced the low student learning outcomes. Based on observations on class VIII A which included the superior class had not yet achieved the desired completeness, the class with the least completeness was class VIII B which was 33.33% with KKM 65 criteria. Seeing this reality, teachers were required to motivate students and foster enthusiasm student learning. Therefore, to foster students' enthusiasm for learning, the author tries to apply student learning activities through discussion methods in small groups.Keywords: Learning, discussion AbstrakProses belajar mengajar yang baik dapat menciptakan situasi yang mmemungkinkan anak belajar, sehingga merupakan titik awal keberhasilan pengajaran. Rendahnya mutu pendidikan tergantung pada pengelolaan proses belajar mengajar yang dapat diartikan kurang efektifnya proses belajar mengajar, penyebabnya: (1) Rendahnya aktifitas belajar,  (2) Sarana dan prasarana yang belum memadai. Kasus pada SMP Negeri % Kota Solok rendahnya aktifitas belajar siswa diduga berpengaruh terhadap rendahnya hasil belajar siswa. Berdasarkan pengamatanpada  kelas VIII A yang termasuk kelas unggul belum mencapai ketuntasan yang di inginkan, sedangkan kelas yang paling sedikit ketuntasannya adalah kelas VIII B yaitu sebanyak 33,33 % dengan kriterian KKM 65. Melihat kenyataan tersebut, guru dituntut untuk dapat memotivasi siswa dan menumbuhkan semangat belajar siswa. Karena itu, untuk menumbuhkan semangat belajar siswa, penulis mencoba untuk menerapkan aktivitas belajar siswa melalui metode diskusi dalam kelompok kecil. Kata kunci: Pembelajaran, diskusi

scholarly journals Two-Dimensional Sampling-Recovery Algorithm of a Realization of Gaussian Processes on the Input and Output of Linear Systems

Entropy ◽  
2020 ◽  
Vol 22 (10) ◽  
pp. 1079
Author(s):  
Vladimir Kazakov ◽  
Mauro A. Enciso ◽  
Francisco Mendoza
Keyword(s):  
Gaussian Processes ◽  
Research Method ◽  
General Algorithm ◽  
Two Dimensional ◽  
Recovery Algorithm ◽  
Conditional Mean ◽  
Quality Of Recovery ◽  
Input And Output ◽  
Statistical Relationships

Based on the application of the conditional mean rule, a sampling-recovery algorithm is studied for a Gaussian two-dimensional process. The components of such a process are the input and output processes of an arbitrary linear system, which are characterized by their statistical relationships. Realizations are sampled in both processes, and the number and location of samples in the general case are arbitrary for each component. As a result, general expressions are found that determine the optimal structure of the recovery devices, as well as evaluate the quality of recovery of each component of the two-dimensional process. The main feature of the obtained algorithm is that the realizations of both components or one of them is recovered based on two sets of samples related to the input and output processes. This means that the recovery involves not only its own samples of the restored realization, but also the samples of the realization of another component, statistically related to the first one. This type of general algorithm is characterized by a significantly improved recovery quality, as evidenced by the results of six non-trivial examples with different versions of the algorithms. The research method used and the proposed general algorithm for the reconstruction of multidimensional Gaussian processes have not been discussed in the literature.

scholarly journals How can electric lighting contribute to human health and well-being?

2021 ◽  
Vol 53 (5) ◽  
pp. 515-522
Author(s):  
P Raynham
Keyword(s):  
Human Health ◽  
Psychological Impact ◽  
Health Benefits ◽  
Well Being ◽  
Health Problems ◽  
Starting Point ◽  
Electric Light ◽  
Health And Well Being ◽  
Hypothetical Explanation

Electric light in buildings may provide some health benefits; however, for most people these benefits are likely to be small. It is possible for electric lighting to cause health problems, if there is too little light or there is glare, but for the most part there is good guidance available and these problems can be avoided. The quality of the lit environment can have a psychological impact and this may in turn impact well-being. A starting point for this is perceived adequacy of illumination. Related lighting metrics are examined and a hypothetical explanation is suggested.

scholarly journals Thermal Physics and Glaucoma II: Preliminary Evidences for a Thermophysical Design of a Possible Visible-Light-Photons Therapy

2021 ◽  
Vol 11 (14) ◽  
pp. 6301
Author(s):  
Giulia Grisolia ◽  
Mariarosa Astori ◽  
Antonio Ponzetto ◽  
Antonio Vercesi ◽  
Umberto Lucia
Keyword(s):  
Quality Of Life ◽  
Thermodynamic Approach ◽  
Equilibrium Thermodynamic ◽  
Pharmacological Treatments ◽  
Light Stimulation ◽  
Cell Behaviour ◽  
Thermal Physics ◽  
Starting Point

Recently, a non-equilibrium thermodynamic approach has been developed in order to model the fundamental role of the membrane electric potential in the cell behaviour. A related new viewpoint is introduced, with a design of a photobiomodulation treatment in order to restore part of the visual field. Here, a first step in experimental evidence of the validity of the thermodynamic approach is developed. This result represents the starting point for future experimental improvements for light stimulation in order to improve the quality of life of the patients. The future possible therapy will be in addition to the pharmacological treatments.

scholarly journals Identification of the State of Electrical Appliances with the Use of a Pulse Signal Generator

Energies ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 673
Author(s):  
Augustyn Wójcik ◽  
Piotr Bilski ◽  
Robert Łukaszewski ◽  
Krzysztof Dowalla ◽  
Ryszard Kowalik
Keyword(s):  
Measurement System ◽  
Cross Correlation ◽  
Pulse Signal ◽  
Signal Generator ◽  
Experimental Results ◽  
The Novel ◽  
End User ◽  
Standard Classification ◽  
Electrical Appliance

The paper presents the novel HF-GEN method for determining the characteristics of Electrical Appliance (EA) operating in the end-user environment. The method includes a measurement system that uses a pulse signal generator to improve the quality of EA identification. Its structure and the principles of operation are presented. A method for determining the characteristics of the current signals’ transients using the cross-correlation is described. Its result is the appliance signature with a set of features characterizing its state of operation. The quality of the obtained signature is evaluated in the standard classification task with the aim of identifying the particular appliance’s state based on the analysis of features by three independent algorithms. Experimental results for 15 EAs categories show the usefulness of the proposed approach.

scholarly journals Quality and Operations Management in Food Supply Chains: A Literature Review

2018 ◽  
Vol 2018 ◽  
pp. 1-14 ◽  
Author(s):  
Yong He ◽  
Hongfu Huang ◽  
Dong Li ◽  
Chunming Shi ◽  
Sarah J. Wu
Keyword(s):  
Literature Review ◽  
Supply Chains ◽  
Operations Research ◽  
Operations Management ◽  
Food Supply ◽  
Research Field ◽  
Food Supply Chains ◽  
The Past ◽  
Starting Point

We present a literature review on quality and operations management problems in food supply chains. In food industry, the quality of the food products declines over time and should be addressed in the supply chain operations management. Managing food supply chains with operations management methods not only generates economic benefit, but also contributes to environmental and social benefits. The literature on this topic has been burgeoning in the past few years. Since 2005, more than 100 articles have been published on this topic in major operations research and management science journals. In this literature review, we concentrate on the quantitative models in this research field and classify the related articles into four categories, that is, storage problems, distribution problems, marketing problems, and food traceability and safety problems. We hope that this review serves as a reference for interested researchers and a starting point for those who wish to explore it further.

Who is a “Senior”? Looking for a definition in the healthcare system

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Monica Consolandi
Keyword(s):  
Quality Of Life ◽  
Health Care ◽  
Healthcare System ◽  
Health Care System ◽  
Design Methodology ◽  
Social Role ◽  
Content Type ◽  
The Core ◽  
Starting Point

Purpose Seniors are nowadays at the core of important reflections to understand both how to ensure them a proper quality of life and better recognize their social role, providing them services and proper health care to value them as persons and resources. This paper aims to find a through definition about who is a senior, in the author’s opinion the starting point to help them flourishing. Design/methodology/approach As an example of definitions, an online dictionary and two geriatric text-books are quoted, highlighting qualities and rights referred to seniors especially in the delicate context of the health-care system. Findings The lack of a commonly shared perspective on this delicate kind of patient entails the difficulty to reach a coherent and satisfying definition about who a senior is. Originality/value The lack of a commonly shared definition leads to inevitable misunderstandings and could explain the arduousness of considering seniors in all their aspects. Further investigations are suggested.

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