scholarly journals The key stages in the design of blinds

Author(s):  
Aleksandr Aleksandrovich Semenyuk

The object of this research is the sun protection devices for translucent enclosing structures such as blinds. The goal of this research lies in examination of the historical experience and modern practice of using sun protection devices. The author conducts retrospective research of the evolution of blinds in order to determine the key stages in the development of structures that regulate the luminous flux. The historical discourse of the evolution of the system of blinds is based on the retrospective analysis of blinds according to the main characteristics, such as materials used, their location (indoors or building facades), and gear options. The author determines three main periods can in the evolution of blinds. The first period started in 1841, when John Hampton patented dentition blinds and lasted until 1936 (the design and materials used did not change throughout this period).The second period lasts from 1936 to 1960, and marks the emergence of the facade constructs "sun-cutter blinds", as well as the use of aluminum for the production of fins. The third period covers 1960s-1970s, is characterized by progressive automatic control, implementation of PVC, and improvement of energy efficiency of blinds using photovoltaic fins.

2020 ◽  
Vol 7 (2) ◽  
pp. 119
Author(s):  
Lukman Affandhy ◽  
Muchamad Luthfi ◽  
Dian Ratnawati ◽  
Frediansyah Firdaus

ABSTRAK  Penelitian bertujuan untuk mengetahui pengaruh pemberian bubuk daun Moringa oleifera (MO) terhadap kuantitas dan kualitas semen sapi peranakan ongole (PO). Metode penelitian menggunakan percobaan lapang dengan rancangan acak lengkap dengan tiga perlakuan pemberian MO sebesar 0 kg/ekor/hari (P1); 0,05 kg/ekor/hari (P2) dan 0,1 kg/ekor/hari (P3). Analsis data menggunakan one way analysis of variance. Masing-masing perlakuan terdiri atas empat ekor dengan tiga periode pengamatan sebagai ulangan, yaitu periode pertama dan ketiga tanpa MO, dan periode kedua diberikan MO pada P2 dan P3. Hasil penelitian menunjukan bahwa volume dan pH semen perlakuan P1, P2 dan P3 tidak berbeda semua periode pengamatan. Motilitas massa spermatozoa P2 dan P3 periode kedua dan ketiga menunjukan nilai +++ berbeda nyata (P<0,05) dibandingkan dengan P1 (++); motilitas individu  perlakuan P1 menunjukkan nilai terendah 60,56±2,94 % (P<0,05) dibandingkan P2 dan P3 pada periode kedua dan ketiga (75,50±2,29 dan 72,50±2,34%). Konsentrasi spermatozoa P2 dan P3 periode kedua dan ketiga menunjukkan rata-rata  >1.350 juta/ml berbeda nyata (P<0,05) daripada P1 (876±152juta/ml), sedangkan total spermatozoa motil menunjukkan nilai tertinggi 5.647±829 juta/ml pada P3 periode kedua.Viabilitas spermatozoa P2 dan P3 menunjukkan nilai >88-89 % beda nyata (P<0,05) daripada P1 (<84 %) pada periode kedua dan ketiga, sedangkan nilai abnormalitas spermatozoa yang terbaik adalah P2 sebesar 4,30% pada periode kedua dan P3 sebesar 5,33% pada periode ketiga. Disimpulkan pemberian bubuk daun MO dengan dosis 0,1 kg/ekor/hari dapat memperbaiki kuantitas dan kualitas semen (viabilitas dan total spermatozoa motil) sapi pejantan PO.Kata kunci:  kuantitas dan kualitas semen, Moringa oleifera, sapi pejantan ABSTRACTThe research aimed to determine the effect of Moringa oleifera (MO) leaf powder on the quantity and quality of semen of ongole crossbreed. The research method used was a field experiment with a completely randomized design with three treatments giving MO of 0 kg/head/day (P1); 0.05 kg/head/day (P2) and 0.1 kg/head/day (P3). Each treatment consisted of four heads with three periods of observation as replications, namely the first and third periods without MO, and the second period was given MO on P2 and P3. Data analysis used a one-way analysis of variance. The results showed that the volume and pH of semen treated P1, P2, and P3 didn’t different in all observation periods. The second and third period spermatozoa mass motility of P2 and P3 showed that the value of +++ was significantly different (P<0.05) compared to P1 (++); Individual motility of P1 treatment showed the lowest value 60,56±2,94 % (P<0.05) compared to P2 and P3 in the second and third periods (75,50±2,29 and 72,50±2,34%). The second and third periods of P2 and P3 spermatozoa concentrations showed an average of >1,350 million/cc significantly different (P<0.05) than P1 (876±152 million/cc), while the total motile spermatozoa showed the highest value of 5,647±829 million/cc in the second period P3. The spermatozoa viability of P2 and P3 showed values >88-89% significantly different (P<0.05) than P1 (<84%) in the second and third periods, while the best spermatozoa abnormalities were P2 at 4.30% in the second period and P3 at 5.33% in the third period. It was concluded that the giving of MO leaf powder at a dose of 0,1 kg/head/day could improve the quantity and quality of semen (viability and total motile spermatozoa) of Ongole Crossbreed bulls. Keywords: bulls, Moringa oleifera, quantity and quality of semen


2019 ◽  
Vol 6 (1) ◽  
pp. 15-22
Author(s):  
Mahmoud Fard Kardel

The main purpose of this article is to examine Iran’s legal and contractual framework for their petroleum, oil and gas industry. Basically, the legal and contractual framework of the Iranian oil and gas industry has been classified into three periods. The first period is from the exploration and discovery of oil in Iran to nationalisation (1901-1951), the second period is from nationalisation to revolution (1951-1979), and the third period is from revolution to the present day (1979-20016).Because each period has its own features and importance two articles will examine this topic. The first period (from exploration to nationalisation, 1901-1951), and second period (from nationalisation to revolution, 1951-1979), has been examined in this article with legal and comparative analysis, and the third period (1979-2016) will be covered in a later article.It should be mentioned that each contractual framework was a turning point regarding to opportunities and circumstances that they have been in that time and also each of those petroleum contractual regimes were a step toward to contractual framework evolution in Iran.


2020 ◽  
Vol 2 (1) ◽  
pp. 1-6
Author(s):  
Syed Rashid Ali

This paper examines the pattern, sources and growth of remittances to Pakistan. It analyses the growing trend of remittances and share of remittances to GDP over the period 1972-2014. We use the kinked exponential model (Boyce, 1986, 1987) to estimates the growing trend of remittances in Pakistan. The results show that remittances received by Pakistan have three distinct growth phases over the study period – Phase I (1973 – 1983), Phase II (1984 – 2000) and Phase III (2001 – 2014). The remittances received by Pakistan have positive growth during the first and the third period while the second period shows negative growth. Before globalization, the UK was the major source of remittances to Pakistan but after globalization, the sources of remittances to Pakistan have been cantered on Saudi Arabia, the UAE, and other Gulf countries.


2020 ◽  
Vol 20 (1) ◽  
pp. 13-21
Author(s):  
Budi Prasetyo ◽  
Nikita Pusparini ◽  
Irwandi Irwandi ◽  
Welly Fitria

Intisari Data Radar cuaca Enterprise Electronics Corporation (EEC) selama 24 jam pada tanggal 5 Oktober 2018 mulai pukul 07.00 WIB hingga 07.00 WIB tanggal 6 Oktober 2018 digunakan pada penelitian ini. Data ini diperoleh dari Balai Besar Meteorologi Klimatologi dan Geofisika Wilayah I dalam format volumetric (.vol) dan memiliki selang waktu per 10 menit. Metode yang digunakan yaitu analisis deskriptif hasil produk turunan Radar yang diolah menggunakan perangkat lunak yang berasal dari produsen radar yaitu Enterprise Doppler Graphic Environment (EDGE) berupa Coloumn Maximum (CMAX), momen intensitas horizontal, momen rata-rata curah hujan, dan Vertical Integrated Reflectivity (VIR), serta grafik curah hujan (RHG). Penelitian ini memperlihatkan bahwa fluktuasi kondisi cuaca yang terjadi pada tanggal 5 Oktober 2018 sangat tinggi. Secara umum, curah hujan intensitas tinggi yang terjadi di Kota Medan pada tanggal 5 Oktober 2018 umumnya terbagi menjadi tiga periode, yaitu hujan pada siang hingga sore (pukul 14.00 – 15.50 WIB), hujan pada petang (pukul 18.20 – 19.40 WIB), dan hujan pada malam hari (21.10 – 23.40 WIB). Fluktuasi tertinggi terjadi pada periode pertama dengan kenaikan curah hujan tertinggi terjadi di Kecamatan Medan Helvetia dengan kenaikan curah hujan sebanyak 32 mm dalam 10 menit yang terjadi pada pukul 14.50 WIB, pada periode kedua terjadi di Kecamatan Medan Kota dengan kenaikan 24 mm pada pukul 18.20 WIB, dan periode ketiga terjadi di Kecamatan Medan Johor dengan kenaikan 17 mm pada pukul 21.20 WIB. Abstract Enterprise Electronics Corporation (EEC) Data Radar for 24 hours on October 5th, 2018, starting at 7:00 LT until 07.00 LT on October 6th, 2018, were used in this research. These data were obtained from the Center for Meteorology, Climatology and Geophysics in Region I in the form of volumetric (.vol) and has an interval of 10 minutes. The method used were descriptive analysis of Radar products processed by software from Radar manufacture, namely Enterprise Doppler Graphic Environment (EDGE) software which in the form of Column Maximum (CMAX) moments of horizontal intensity and moments of average rainfall, Vertical Integrated Reflectivity (VIR), and rainfall graph (RHG). We found that there were high fluctuations in weather conditions that occurred on October 5th, 2018. In general, the high-intensity rainfall occurred in Medan city on October 5th, 2018 was generally divided into three periods, namely rain in the afternoon until evening (at 14:00 - 15:50 LT), rain at dusk (18:20 - 19:40 LT), rain at night (21.10 - 23.40 LT). The highest fluctuation occurred in the first period with the highest increase of rainfall occurred in Medan Helvetia Subdistrict with an increase of 32 mm rainfall in 10 minutes which occurred at 14.50 LT; the second period occurred in Medan Kota District with a 24 mm increase at 18.20 LT, and the third period occurred in Medan Johor District with a 17 mm increase at 21.20 LT.


Algorithms ◽  
2019 ◽  
Vol 12 (6) ◽  
pp. 119 ◽  
Author(s):  
Hamidreza Hasheminasab ◽  
Sarfaraz Hashemkhani Zolfani ◽  
Mahdi Bitarafan ◽  
Prasenjit Chatterjee ◽  
Alireza Abhaji Ezabadi

Blast-resistant buildings are mainly used to protect main instruments, controllers, expensive equipment, and people from explosion waves. Oil and gas industry projects almost always include blast-resistant buildings. For instance, based on a hazard identification (HAZID) and hazard and operability (HAZOP) analysis of a plant, control rooms and substations are sometimes designed to withstand an external free air explosion that generates blast over pressure. In this regard, a building façade is considered to be the first barrier of resistance against explosion waves, and therefore a building façade has an important role in reducing a building’s vulnerability and human casualties. In case of a lack of enough resistance, explosion waves enter a building and bring about irreparable damage to the building. Consequently, it seems important to study and evaluate various materials used in a façade against the consequences of an explosion. This study tried to make a comparison between different types of building facades against explosion waves. The materials used in a building play a key role in the vulnerability of a building. In this research, a literature review and the fuzzy Delphi method were applied to find the most critical criteria, and then a fuzzy evaluation based on the distance from the average solution (EDAS) was applied in order to assess various materials used in building facades from the perspective of resiliency. A questionnaire was presented to measure effective indices in order to receive experts’ ideas. Finally, by implementing this methodology in a case study, it was concluded that a stone façade performs much better against explosions.


2019 ◽  
Vol 09 (02) ◽  
pp. 57-63
Author(s):  
Sushmita V. Palanisamy ◽  
Chethan Hegde

Abstract Background Contemporary dentistry is advancing toward computer-aided design/ computer-aided manufacturing (CAD/CAM) technology. But the budding dentists are unaware about the advancement. This survey aims at detecting the level of awareness among the undergraduate students and then correlating those results to modify the future curriculum. Objective The study aims (1) to assess the awareness among the dental undergraduate students and (2) to correlate the level of awareness among the third years, final years, and interns. Sample Selection Study sample consist of 300 students (third year students, final year students, and interns) of A. B. Shetty Memorial Institute of Dental Sciences, Mangalore, Karnataka, India. The information of the survey was collected with the help of a questionnaire. Results More than 70% of the students were aware about the basic functioning of CAD/CAM unit and approximately 74% of the students were unaware about the materials used to fabricate the prosthesis using CAD/CAM technology.


2016 ◽  
Vol 25 (1) ◽  
pp. 9
Author(s):  
Tiiu Kasmel ◽  
Jaan Kasmel

The article provides an overview of ten diploma theses written under the supervision of Professor of Zoology Juhan Aul at the University of Tartu from 1958–1970. The theses deal with physical development of Estonian school students in two Estonian towns (Tartu and Pärnu) and nine districts (Tartu, Elva, Põlva, Räpina, Rapla, Keila, Pärnu, Võru, Harju) according to the then existing administrative division. The theses are based on the anthropological material collected from 1956–1966.The first part of the article briefly describes the period of nearly 202 years during which the scholars related to the University of Tartu have conducted various physical anthropological studies on Estonians. These years can conditionally be divided as follows: the first period, 1814–1927 – the period from Baer to Aul, the second period, 1927–1993 – the Aul period, the third period, from 1993 to the present – the period of the Centre for Physical Anthropology.The article describes some of the options the students had for participating in anthropological research. An overview is given of the beginning of anthropological research of children and school students in Estonia and in the world. The article acquaints the reader with the whole of the so-called Aul period and the diploma theses on Estonian school students’ physical development supervised by him.The second part gives an overview of the diploma theses.


2012 ◽  
Vol 3 (2) ◽  
pp. 189-225
Author(s):  
Victor A. Friedman

The deployment of the Albanian admirative as well as the evidential particles kinse ‘allegedly’ and gjoja ‘supposedly’ in Kosovar electronic news sources to render either dubitative or neutral reports — depending on both the source and the timing — contributed to the project of an independent Kosovo. The usages can be divided into three periods: 1994–1997, 1998–1999, and post-1999. During the first period, usage was exclusively dubitative and deployed for Serbian news sources. During the second period, which corresponded to the intensification of the armed uprising, usage shifted to neutrality, and during the third period, after the NATO bombing campaign, it returned somewhat to dubitativity, this time aimed at UN and NATO sources. The discussion demonstrates how pragmatics and grammatical categories contribute to the construction of political narratives and argues that a socially informed linguistic analysis is crucial to understanding how politics is performed in the world.


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