scholarly journals Effect of different basin materials on the performance of hemispherical distiller with mirrors and energy storage material

2022 ◽  
Author(s):  
Mohammed El Hadi Attia ◽  
Fadl Abdelmonem Essa ◽  
Mohamed Abdelgaied ◽  
Abd elnaby Kabeel
Keyword(s):  
Energy Storage ◽  
Total Yield ◽  
Solar Still ◽  
Storage Medium ◽  
Second Stage ◽  
Surface Areas ◽  
Solar Desalination ◽  
Third Stage ◽  
Three Stages ◽  
Energy Storage Material

Abstract Numerous studies are being conducted on solar desalination systems with creating new designs to improve the efficiency and yield of these systems. Hemispherical solar still has a relatively large throughput because of its large exposure and evaporation surface areas compared to the other distiller designs. To get the optimal conditions of the parameters that provide the highest productivity of the hemispherical still, three hemispherical basin stills were fabricated and tested. The experiments were performed in three stages: In the first one, the traditional hemispherical solar still THSS (a reference distiller) was compared by THSS with internal reflective mirrors (THSS-IRM). In the second stage, the effect of using different basin metals (THSS with basin metal of zinc (THSS-IRMZ) and basin metal of copper (THSS-IRMC)) with internal reflective mirrors was studied. In the third stage, the two distillers were investigated under using energy storage medium (30 g/L sand grains for each). The THSS with internal reflective mirrors, basin metal of zinc, and energy storage medium is abbreviated by THSS-IRMZSG. Also, THSS with internal reflective mirrors, basin metal of copper, and energy storage medium is abbreviated by THSS-IRMCSG. Moreover, THSS with internal reflective mirrors and energy storage medium is abbreviated by THSS-IRMSG. The results showed that the combination of using internal reflective mirrors, basin material (copper) and energy storage medium provided the best improvement of hemispherical distillation device. The maximum cumulative yield of THSS-IRMCSG was 11.9 L/m².day, while the reference distillation device gave a total yield of 4.65 L/m².day. So, the productivity was improved by around 156%.

scholarly journals Improving the Potable Water from Tubular Solar Still Using Eggshell Powder as an Natural Energy Storage Medium - An Experimental Approach

2021 ◽  
Author(s):  
Amrit Kumar Thakur ◽  
Prof. Dr. Ravishankar Sathyamurthy
Keyword(s):  
Energy Storage ◽  
Fresh Water ◽  
Potable Water ◽  
Solar Still ◽  
Storage Material ◽  
Average Water Temperature ◽  
Surface Areas ◽  
Energy Store ◽  
Energy Storage Material ◽  
Expanding Population

Abstract It seems like every hour, there is a greater need for fresh water. The demand for fresh water is rapidly growing as a consequence of the expanding population and the increased urbanization of the world's population. The tubular solar still offers much larger evaporative and condensing surface areas than normal single slope solar still. The scope of this study is to improve the performance of tubular solar still by employing eggshells as the bed material, which has good heat absorption properties. Results showed that the influence of eggshell powder as energy storage material in the basin improved the average water temperature by 10.8, 10.9, and 8.73% for the water thickness of 10, 15, and 20 mm respectively. The usage of eggshells as an energy store in the basin results in an increase of about 60.77 % potable water produced. The maximum observed distillate output from the solar still is 0.6 kg for solar stills with eggshell powder as energy storage material and 0.34 kg for solar stills without eggshell powder in the absorber of TSS at peak solar radiation and at the lowest water thickness of 10 mm. The hourly potable water generated from TSS using eggshell as an energy storage material increased by roughly 47% compared to the flat absorber without eggshell powder. TSS with eggshell powder as energy storage has a daily energy efficiency of 79.19, 75.49, and 44.18 % for water thicknesses of 10, 15, and 20 mm in the basin. Tubular solar still using eggshell as energy storage material and tubular solar still without any material produced 3.62 kg and 1.42 kg average yields at a water thickness of 10 mm. Water thickness of 10, 15, and 20 mm has performance improvement ratios of 2.54, 2.51, and 2.18 respectively.

The Coherence of Mary Barton: Romance, Realism, and Utopia

2015 ◽  
Vol 5 (3) ◽  
pp. 185-200
Author(s):  
Robert Z. Birdwell
Keyword(s):  
Thomas Carlyle ◽  
The Novel ◽  
Second Stage ◽  
The Third ◽  
Third Stage ◽  
Three Stages ◽  
Mode Of Production

Critics have argued that Elizabeth Gaskell's first novel, Mary Barton (1848), is split by a conflict between the modes of realism and romance. But the conflict does not render the novel incoherent, because Gaskell surpasses both modes through a utopian narrative that breaks with the conflict of form and gives coherence to the whole novel. Gaskell not only depicts what Thomas Carlyle called the ‘Condition of England’ in her work but also develops, through three stages, the utopia that will redeem this condition. The first stage is romantic nostalgia, a backward glance at Eden from the countryside surrounding Manchester. The second stage occurs in Manchester, as Gaskell mixes romance with a realistic mode, tracing a utopian drive toward death. The third stage is the utopian break with romantic and realistic accounts of the Condition of England and with the inadequate preceding conceptions of utopia. This third stage transforms narrative modes and figures a new mode of production.

scholarly journals Matemáticas para la Ingeniería de Sistemas [Mathematics for systems engineering]

2014 ◽  
Author(s):  
Iván Mauricio Argote ◽  
Robinson Andrés Jiménez
Keyword(s):  
Mathematics Education ◽  
Systems Engineering ◽  
Specific Area ◽  
Reconstruction Process ◽  
Second Stage ◽  
Engineering Program ◽  
Third Stage ◽  
Three Stages ◽  
Education Courses ◽  
Current Curriculum

Resumen La investigación tiene como propósito la restructuración de la malla curricular del Programa de Ingeniería de Sistemas, de la Universidad Mariana, respecto al área de matemática y su aporte al desarrollo de competencias del respectivo currículo. El proceso de reconstrucción del plan de estudios se llevó a cabo en tres etapas. La primera etapa presenta la identificación de los contenidos curriculares de los cursos de educación matemática del currículo vigente que son pertinentes y esenciales a la formación del Ingeniero de Sistemas. La segunda etapa determina los contenidos que no están presentes en el actual plan de estudios y que deben ser incorporados en los cursos de educación matemática para desarrollar el pensamiento lógico - matemático del Ingeniero de Sistemas. La tercera etapa rediseña los cursos del programa de educación matemática para que sean pertinentes y esenciales, con el área específica del programa de Ingeniería de Sistemas. Palabras Claves: Currículo, Matemática, Ingeniería de Sistemas, Pertinencia, Modelación.   Abstract The research has the purpose of restructuring the curriculum of the Systems Engineering Program, University of Mariana, respect to the area of mathematics and its contribution to the development of the skills of the respective curriculum. The reconstruction process of the curriculum took place in three stages. The first stage presented the identification of the curricula of mathematics education courses current curriculum that are relevant and material to the formation of Systems Engineer. The second stage determines the contents that are not present in the current curriculum and should be incorporated into mathematics education courses to develop logical thinking - Mathematical Systems Engineer. The third stage redesign courses mathematics education program to be relevant and material, with the specific area of Systems Engineering program. Keywords: Curriculum, Mathematics, Systems Engineering, Relevance, Modeling.

scholarly journals Animasi Tata Cara Penyelamatan Bencana Gempa Bumi Untuk Anak - Anak

2020 ◽  
Vol 2 (1) ◽  
pp. 33-42
Author(s):  
Gita Sispratiwi Faja ◽  
Nyoman Miyarta Yasa
Keyword(s):  
Information Dissemination ◽  
Public Knowledge ◽  
National Agency ◽  
School Students ◽  
The West ◽  
Earthquake Disaster ◽  
Second Stage ◽  
The Third ◽  
Third Stage ◽  
Three Stages

The National Agency for the Control of Britain (BNPB) noted that 515 people died from the earthquake in Lombok, West Nusa Tenggara (NTB). Seeing this problem, the author wants to make an animation of earthquake disaster relief procedures that will be used by the BPBD as an additional medium for socializing and delivering information to increase public knowledge about procedures for saving earthquake disasters, especially children. In the process of making this animation using the pipeline method which includes three stages, namely the first stage of pre-production, the second stage of production The third stage of post-production. After doing all the stages are expected to be able to produce animation procedures for earthquake disaster rescue for children. So that this animated video can be used as a media for information dissemination or information delivery by the West Nusa Tenggara Province BPBD office which is more effective for introducing elementary school students. To determine the feasibility of the animation that was made, a beta test was conducted by submitting questionnaires to 30 respondents. The results obtained are animated procedures for rescuing earthquake disasters for children to be used as media for information dissemination or delivery of information by the West Nusa Tenggara Province BPBD office.

scholarly journals URBAN PLANNING IN LIBYA – EVOLUTION, LEVELS, PROBLEMS

HERALD ◽  
2017 ◽  
Vol 7 (19) ◽  
Author(s):  
Abousa Hadoud
Keyword(s):  
Urban Planning ◽  
Urban Development ◽  
Urban Environment ◽  
Natural Increase ◽  
The Public ◽  
Second Stage ◽  
The Third ◽  
Third Stage ◽  
Three Stages ◽  
Development And Environment

Urban planning in Libya in general effectively contributed to preparation of comprehensive and the public plans for all Libyan cities. especially after the issuance of Law No. (5) of 1969, concerning the planning of cities and villages, three key schemes have been developed in three stages starting from the first phase for years 1968 to 1988, and the second stage years from 1988 to 2000, and the third stage years 2000 to 2025. Goal of such schemes is to make a balance between the natural increase of population and urban mass, in order to achieve urban development and environment and preserve of the environment and urban environment from degradation and the spread of degraded areas in Libyan cities. But a number of problems disrupted the planning, and have had effects on the urban development in Libya.

scholarly journals Aplikasi Sistem Pakar Diagnosa Penyakit Pada Anak Bawah Lima Tahun Menggunakan Metode Forward Chaining

2017 ◽  
Vol 3 (1) ◽  
pp. 61 ◽  
Author(s):  
Bagus Fery Yanto ◽  
Indah Werdiningsih ◽  
Endah Purwanti
Keyword(s):  
Expert System ◽  
System Application ◽  
Disease Diagnosis ◽  
Information Collection ◽  
Forward Chaining ◽  
Second Stage ◽  
Children Health ◽  
Third Stage ◽  
Testing Data ◽  
Three Stages

Abstrak— Anak-anak pada usia 2 bulan sampai 5 tahun (Balita) lebih rentan terkena penyakit. Lingkungan sangat mempengaruhi kesehatan Balita. Penelitian ini bertujuan untuk membuat sebuah aplikasi sistem pakar diagnosa penyakit pada Balita berbasis mobile. Penelitian ini terdiri dari tiga tahap. Tahap pertama adalah pengumpulan data dan informasi dari Manajemen Terpadu Balita Sakit (MTBS) dan wawancara dengan Bidan. Dari pengumpulan data dan informasi tersebut ditemukan fakta penyakit, keluhan, gejala dan saran penanganan. Tahap kedua adalah pembuatan rule dengan 18 penyakit. Tahap ketiga adalah implementasi aplikasi sistem pakar berbasis mobile dengan fitur diagnosa penyakit, riwayat diagnosa dan kumpulan penyakit. Aplikasi sistem pakar yang dibuat dapat mendiagnosa penyakit dan memberikan saran penanganan. Hasil evaluasi dari 50 data uji coba menghasilkan tingkat akurasi sebesar 82%, dimana 41 hasil diagnosa yang benar dan 9 diagnosa yang salah. Kata Kunci— Sistem Pakar, Forward Chaining, Diagnosa Penyakit, Manajemen Terpadu Balita Sakit, Knowladge BaseAbstract— Children at the age of 2 months to 5 years (toddlers) are more susceptible to disease contagious. Environmental condition significantly influences the children health. This  research aimed to create a mobile-based expert system application to diagnose disease in toddlers. This research consist of three stages. The first stage were data and information collection from Manajemen Terpadu Balita Sakit  (MTBS) and interview with medical staffs. From the first stage, we can discover the disease facts, signs, symptoms and treatment advices. The second stage was the construction of rules for 18 diseases. The third stage was the implementation of mobile-based expert system application with features of disease diagnosis, diagnosis history and collection of disease diagnosis. Expert system application made able to diagnose the disease and provide treatment advice. The results of evaluation using 50 testing data provides the level of accuracy of 82%, where 41 diagnosis result were true and 9 diagnosis were false. Keywords— Expert System, Forward Chaining, Disease Diagnosis, Manajemen Terpadu Balita Sakit, Knowledge Base

scholarly journals Wayang Klithik Robot

2019 ◽  
Vol 2 (1) ◽  
Author(s):  
Gandar Setiawan1
Keyword(s):  
Main Idea ◽  
Three Dimension ◽  
Visual Form ◽  
Second Stage ◽  
Third Stage ◽  
Three Stages

Wayang is a autentic culture from Indonesia. Wayang has many figure and character. It is main idea of this make the artwork. Inspiration of the artwork also from observation robot forms. Robot has the furious and futuristic form. Like the progression of technologi, form of robot also more experiencing form progression. Until now, form of robot still identic and can not losed from imajinative forms. This prossesing to make the artwork use created methode from Gustami, it is a three stages six steps creating craft artwork. First stage is eksploration consist of observation and finding refference steps. Second stage is desaigning consist of making the sketch and making the gambar teknik or modeling steps. Third stage is forming consist of create artwork and finished with value and evaluation steps. Result of visual form is a three dimension artwork with futuristic robot form. Visual form the artwork is a transformastion of futuristic wayang klithik with robot form. The puppet figures are Wrekudara and Gatotkaca Combination form is a method for impression and aesthete value of the artwork. Wayang merupakan budaya asli dari Indonesia. Wayang memiliki berbagai macam tokoh dan karakter. Wayang menjadi ide utama dalam penciptaan karya ini. Inspirasi karya juga muncul dari pengamatan bentuk-bentuk robot. Robot memiliki bentuk yang variatif dan futuristik. Sesuai dengan perkembangan teknologi, bentuk robot juga mengalami perkembangan yang lebih bermacam-macam. Sampai saat ini, bentuk robot masih identik dan tidak bisa lepas dari bentuk-bentuk imajinatif. Proses pembuatan karya seni ini menggunakan metode penciptaan dari Gustami, yaitu metode tiga tahap enam langkah dalam menciptakan karya seni kriya. Tahap pertama yaitu eksplorasi yang meliputi langkah pengamatan dan pencarian sumber pustaka. Tahap kedua merupakan tahap perancangan yang terdiri dari langkah pembuatan beberapa sketsa dan pembuatan gambar teknik ataupun model. Tahap yang ketiga yaitu tahap perwujudan yang terdiri langkah pengerjaan karya, dan diakhiri dengan penilaian juga evaluasi karya yang telah jadi. Bentuk visual yang dihasilkan yaitu karya seni tiga dimensi dengan bentuk futuristik menyerupai robot. Bentuk visual karya merupakan penggabungan antara bentuk wayang klithik dengan bentuk robot. Tokoh wayang yang dibuat yaitu Wrekudara dan Gatotkaca. Perpaduan bentuk dilakukan sebagai cara untuk memberikan kesan dan nilai estetik pada karya.

Signs of polichnous deformations in microstructures of carbonate rocks of the Katav-Yuryuzan zone of transpression (Southern Urals)

2020 ◽  
pp. 13-21
Author(s):  
A. V. Tevelev ◽  
A. A. Borisenko ◽  
M. I. Erokhina ◽  
S. S. Popov ◽  
I. A. Kosheleva ◽  
...  
Keyword(s):  
Simple Shear ◽  
Carbonate Rocks ◽  
Pure Shear ◽  
Southern Urals ◽  
Second Stage ◽  
The Third ◽  
The North ◽  
Third Stage ◽  
Three Stages ◽  
Two Stages

The Katav-Ivanovsk transpression zone experienced at least two stages of tectonic deformations, and the sequence of deformations was approximately the same throughout the entire zone — from the Bakal-Satka fault in the south to the Suleimsky fault in the north. Three stages of the formation of parageneses were identified. The parageneses of the first and the second stages were formed in a pure shear environment, and the paragenesis of the third stage — in a simple shear environment. There are stylolites (S1) parallel to bedding, and mineral veins (V1) in the paragenesis of the first stage. Paragenesis of the second stage combines stylolites (S2), mineral veins (V2) and intergranular cleavage (S2). In paragenesis of the third stage were distinguished schistosity (S3), milonites (S3), cataclasites, mica packets (SC-textures), and the rotation structures of porphyroblasts.

Division and differentiation during normal and liguleless-1 maize leaf development

Development ◽  
1990 ◽  
Vol 110 (3) ◽  
pp. 985-1000 ◽  
Author(s):  
A.W. Sylvester ◽  
W.Z. Cande ◽  
M. Freeling
Keyword(s):  
Cross Wall ◽  
Normal Leaf ◽  
Division Rate ◽  
Maize Leaf ◽  
Second Stage ◽  
Cellular Events ◽  
Division Pattern ◽  
Third Stage ◽  
Anticlinal Division ◽  
Three Stages

The maize leaf is composed of a blade and a sheath, which are separated at the ligular region by a ligule and an auricle. Mutants homozygous for the recessive liguleless-1 (lg1) allele exhibit loss of normal ligule and auricle. The cellular events associated with development of these structures in both normal and liguleless plants are investigated with respect to the timing of cell division and differentiation. A new method is used to assess orientation of anticlinal division planes during development and to determine a division index based on recent epidermal cross-wall deposition. A normal leaf follows three stages of development: first is a preligule stage, in which the primordium is undifferentiated and dividing throughout its length. This stage ends when a row of cells in the preligule region divides more rapidly in both transverse and longitudinal anticlinal planes. During the second stage, ligule and auricle form, blade grows more rapidly than sheath, divisions in the blade become exclusively transverse in orientation, and differentiation begins. The third stage is marked by rapid increase in sheath length. The leaf does not have a distinct basal meristem. Instead, cell divisions are gradually restricted to the base of the leaf with localized sites of increased division at the preligule region. Divisions are not localized to the base of the sheath until near the end of development. The liguleless-1 homozygote shows no alteration in this overall pattern of growth, but does show distinct alteration in the anticlinal division pattern in the preligule region. Two abnormal patterns are observed: either the increase in division rate at the preligule site is absent or it exhibits loss of all longitudinal divisions so that only transverse (or cell-file producing) divisions are present. This pattern is particularly apparent in developing adult leaves on older lg1 plants, in which sporadic ligule vestiges form. From these and results previously published (Becraft et al. (1990) Devl Biol. 14), we conclude that the information carried by the Lg1+ gene product acts earlier in development than formation of the ligule proper. We hypothesize that Lg1+ may be effective at the stage when the blade-sheath boundary is first determined.

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