Báo cáo vật lý: "Hourly Global Solar Radiation Estimates on a Horizontal Plane" potx

... Global Solar Radiation Estimates on a Horizontal Plane 52 Malaysia is a country that has abundant solar energy. The annual average daily solar irradiations for Malaysia have a magnitude of ... Kajian ini mendapati bahawa model Collares-Pereira dan Rabl adalah merupakan model yang terbaik. Kata kunci: model Collares-Pereira dan Rabl, sinaran solar global, model sinaran solar perjam ... Collares-Pereira and Rabl model, global solar radiation, hourly solar radiation (It) models, statistical tests, solar energy design Abstrak: Pilihan model sinaran solar global perjam (It)...

Báo cáo vật lý: "The Effect of Triethylene Diamine on the Properties of Waste Paper Foam Composites" ppsx

... CONCLUSION The effect of TEDA as a catalyst and waste paper filler content on the mechanical properties of waste paper foams has been investigated. The results indicate that increasing the waste ... that the elastic modulus of all of the PS waste paper foam increased with increasing waste paper content. This is because the addition of waste paper, which contains both organic and inorganic ... S., Kisaka, H., Tamano, Y. & Lowe, D.W. (1993). Key aspects of novel catalyst systems in all-water blown integral skin foams, related catalystic activities in the isocyanate reaction. Proceedings...

Báo cáo vật lý: "Effect of Blowing Agent Concentration on Cell Morphology and Impact Properties of Natural Rubber Foam" ppt

... Abstrak: Kandungan sodium bikarbonat sebagai agen pembusaan kimia dipelbagaikan bagi mengkaji kesannya terhadap morfologi dan sifat hentaman busa getah asli. Getah boleh-kembang disediakan ... menggunakan penggiling bergulung dua dan kemudian dibusakan menerusi proses pindahan haba menggunakan pengacuanan mampatan dan oven aliran udara panas. Sifat-sifat fizikal busa getah asli dicirikan ... dan keputusannya boleh dikaitkan secara sistematik dengan sifat hentaman busa. Tenaga penyerapan busa meningkat dengan penurunan ketumpatan sambung silang dan ketumpatan relatif busa, dimana...

Báo cáo vật lý: "LATTICE DYNAMICS AND NORMAL COORDINATE ANALYSIS OF HTSC Tl2Ba2Cu1O6" potx

... The A 2u and A 1g modes involve displacement along crystallographic c-axis. The B2u and Eg modes along the b-axis and Eu modes along the a- axis. The normal coordinate calculation was ... label the ions and r is their separation. The parameters a ij and bij are the pair potentials and the parameters Y and K determine the electronic polarizabilities. The parameters Z, Y and ... atoms are shown in Figure 1. The 11 atoms of the unit cell yield a total of 22 optical vibrational modes. All the above calculations are made at q = 0. One of A 2u and Eu modes corresponds...

Báo cáo vật lý: "AN ANFIS-BASED PREDICTION FOR MONTHLY CLEARNESS INDEX AND DAILY SOLAR RADIATION: APPLICATION FOR SIZING OF A STAND-ALONE PHOTOVOLTAIC SYSTEM" ppsx

... solar radiation, Solar Energy, 68, 161–168. 15. Hontoria, L., Aguilera, J. & Zufiria, P. (2005). An application of the multilayer perceptron: Solar radiation maps in Spain. Solar Energy, ... PREDICTION FOR MONTHLY CLEARNESS INDEX AND DAILY SOLAR RADIATION: APPLICATION FOR SIZING OF A STAND-ALONE PHOTOVOLTAIC SYSTEM A. Mellit1,2, A. Hadj Arab2,3 and S. Shaari4* 1Department ... coordinates. The clearness index ()Ktcorresponds to the solar radiation data (H) divided by the corresponding extraterrestrial data (H0). Solar radiation data is the most important parameters...

Báo cáo vật lý: "Electrical Conductivity of Chlorophyll with Polythiophene Thin Film on Indium Tin Oxide as P-N Heterojunction Solar Cell" ppsx

... elektrik dalam keamatan cahaya menunjukkan peningkatan dengan pertambahan keamatan cahaya. Kekonduksian elektrik dalam cahaya adalah berkurang dengan pertambahan ketebalan filem nipis PT manakala ... penduga empat titik dalam gelap dan dibawah keamatan cahaya yang berbeza-beza. Hasil kajian ini menunjukkan bahawa filem nipis PT berjaya dilapisi dengan CHLO di atas substrat ITO dengan ketebalan ... ketebalan yang berbeza-beza. Kekonduksian elektrik dalam gelap menunjukkan peningkatan dengan pertambahan ketebalan filem nipis PT. Manakala, dengan pertambahan ketebalan filem nipis CHLO, kekonduksian...

báo cáo Vật lý

... n a đối với hạn hẹp c a trang báo Tự nãy giờ lẩn quẩn ở phần quang năng làm gì ở đ a cầu hay trong không gian, bây giờ xin tiếp tục sang phần quang năng đi về đâu và nó có chết không, hay ... tiềm ẩn trong các khách hàng ở nhiêu nước.Sử dụng năng lượng xanh trong sinh hoạtCon số dự đoán rất cao, bảy triệu khách hàng mà Datamonitor đ a ra một phần phụ thuộc vào vai trò c a các Chính ... c a các phân tử chính là nhiệt năng c a vật. Nhiệt năng có quan hệ chặt chẽ với nhiệt độ. Nhiệt độ c a vật càng cao thì các phân tử cấu tạo nên vật chuyển động càng nhanh và nhiệt năng c a vật...

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Estimation of clear sky hourly global solar radiation in Iraq

... developed a method for estimating hourly solar radiation from daily solar radiation. Katiyar et al., [11] and Katiyar and Pandey [12] presented an analysis of hourly solar radiation data and developed ... estimating hourly solar radiation on horizontal and inclined surfaces on the basis of daily solar radiation. The aim of this research is to use a simple model to estimate hourly global solar radiation ... ASHRAE Applications Handbook (SI). Atlanta, U. S. A. , 1999. [14] Chandel, S. K., and Aggarwal R. K. Estimation of Hourly Solar Radiation on Horizontal and Inclined Surfaces in Western Himalayas....

Báo cáo lâm nghiệp: "Transformation of solar radiation in Norway spruce stands into produced biomass – the effect of stand density" doc

... principle af-fected: (i) by the amount of solar radiation absorbed by the stand canopy, and (ii) by the leaf area which is able to capture solar radiation. A relationship between RUE and PARa and/or ... photosynthetically active radiation (PARa), (B) leaf area index (LAI) values on dense (FD – full diamonds) and sparse (FS – open circles) Norway spruce standsFig. 6. Seasonal values of the radiation ... documented the relation between LAI and PARa (Fig. 4). e eﬃciency of solar radia-Fig. 5. Relationship between seasonal values of radiation use eﬃciency (RUE) and (A) seasonal amount of absorbed photosynthetically...

Báo cáo vật lý: "Analysis of Trace Elements in Teeth by ICP-MS: Implications for Caries" pptx

... teeth has become an important tool to evaluate an individual’s nutritional and environmental status.1–5 Primary teeth are easily obtained because they naturally exfoliate as the permanent ... synchrotron microprobe radiation. Also using synchrotron microprobe radiation, Carvalho et al.19 analysed 40 molar teeth that were previously restored with dental amalgams to determine how the major ... Figure 1: Schematic diagram of a human molar. El-Kanayat City, Egypt is a rural area, and its inhabitants obtain their livelihood from agriculture. In addition, the inhabitants of this city...

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