176 research outputs found
Political Biography of Yasir Arafat
No full textDarba nosaukums ir “Jasira Arafata politiskā biogrāfija.” Jasirs Arafats ir personība, kas spēlēja vienu no galvenajām lomām Palestīnas valsts izveidošanā visa 20. gadsimta garumā un tās attiecībās ar Tuvo Austrumu reģionā esošajām valstīm. Palestīnas jautājums ir aktuāls un problemātisks līdz pat šodienai. Darba mērķis ir hronoloģiskā secībā aplūkot galvenos Jasira Arafata politiskās darbības periodus un viņa sadarbību ar citiem tā laika politiskajiem līderiem. Darba autors izmanto literatūras analīzes pētījuma metodi. Īpaša uzmanība darbā ir pievērsta Arafata un palestīniešu politiskajām darbībām Jordānijā, kā arī viņa politiskām attiecībām ar Jordānijas valdnieku - Karali Huseinu. Bakalaura darbs sastāv no 5 nodaļām un 1 apakšnodaļas. Darbā ir 49 lapaspuses. Atslēgvārdi: Jasirs Arafats, Palestīna, Huseins, Hašimīti, PAO, Izraēla.The title of the bachelor thesis is “Political Biography of Yasir Arafat”. Yasir Arafat is the personality that played one of the main roles in the Palestinian state creation during the all 20th century and its relationships with other countries in the Middle East region. The Palestinian cause is still real and problematic even today. Goal of the thesis is to chronologically examine main periods of political biography of Yasir Arafat and his interaction with other political leaders of that time. The author uses literature analysis method. Particular attention is paid to Arafat’s political actions in Jordan as well as his political relationship with Jordanian ruler – King Hussain. The bachelor thesis consists of 5 chapters and 1 subchapter. It contains 49 pages. Keywords: Yasir Arafat, Palestine, Hussain, Hashemites, PLO, Israel
Radio Frequency Spectrum Monitoring System at Low Earth Orbit by MRC-100 Satellite
No full textThe ongoing development of modern telecommunication technologies is leading to a steady increase in electromagnetic pollution on Earth and space. This pollution in Low Earth Orbit (LEO) can impact space-based systems and operations, making it difficult to control small satellites. Furthermore, it can interfere with scientific measurements and experiments conducted in space. The primary objective of this paper is to demonstrate the ability to design and develop a 3-unit PocketQube-class student satellite, MRC-100, as an extension of the SMOG-1 one-unit PocketQube satellite, the fourth satellite of Hungary. The MRC-100 satellite comprises several scientific payloads. The main one is a wide-band spectrum analyzer that operates in the frequency range of 30 MHz to 2.6 GHz and is used to measure electromagnetic pollution in Low Earth Orbit. This paper's measurements were conducted on an extended band ranging from (2–3.1 GHz). We present the capabilities of the extended band spectrum analyzer to measure electromagnetic pollution with the designed system's limited size 40 × 40 mm, weight, and power consumption of less than 400 mW. The working extended band spectrum analyzer was tested on the satellite flight module in the laboratory
RELASI MANUSIA DENGAN LINGKUNGAN DALAM KUMPULAN CERPEN DANAU SEMBULUH KARYA MUHAMMAD YASIR: KAJIAN EKOKRITIK GLOTFELTY
No full textAbstrac
The purpose of this study is to describe the relationship between humans and the environment and factors that influence the relationship between humans and the environment. This research is descriptive qualitative. Data collection technique is documentation technique that is reading and recording data in accordance with the focus of research. This research was conducted by identifying, classifying, and analyzing data in the collection of Danau Sembuluh short stories by Muhammad Yasir. The results showed that in the collection of Danau Sembuluh short stories, the author gave rise to the environmental wisdom values of the Ngaju Dayak tribe in the form of an attitude of respect for nature, an attitude of responsibility towards nature, the principle of love and care for nature, an attitude of not harming nature, and the principle of simple and harmonious living. with nature. The factors that influence human relations with the environment are religion, economics, technology, and education
A review on graphene and graphene composites for application in electromagnetic shielding
No full text<p>This document is an author version of review paper ragarding new shielding materials. <span>To design an EMI shielding product, a compromise must be achieved between the electromagnetic shielding efficiency, the thickness of shielding materials, durability, mechanical strength, reduced volume and weight, and elasticity. Due to its ability to block EMWs, flexibility, lightweight, and chemical resistivity, graphene has been identified as a promising candidate material for efficient EMI shielding. Herein, we reviewed the studies that investigated various graphene-based composites as potential EMI shielding materials, with a focus on the composites based on graphene and silver nanowires due to their high EMI shielding efficiency, low production price, and favorable mechanical properties. </span></p>
Wide Band Spectrum Monitoring System from 30MHz to 1800MHz with limited Size, Weight and Power Consumption by MRC-100 Satellite
No full textToday, the usage of radio frequencies is steadily increasing based on the continuous development of modern telecommunication technologies, and this, in turn, increases the electromagnetic pollution not only on Earth but also in space. In low Earth orbit, electromagnetic pollution creates some kind of difficulty in controlling nano-satellites. So it is necessary to measure the electromagnetic pollution in the Low Earth Orbit. The basic aim of this paper is to present the capability of designing and developing a PocketQube-class satellite 3-PQ 5 x 5 x 15 cm as a potential continuation of SMOG-1, the fourth satellite of Hungary. The planned scientific payload of MRC- 100 is a wideband spectrum monitoring system for radio frequency smog in the frequency range of 30-2600 MHz on Low Earth Orbit (600 Km). In this paper, we have executed qualifying measurements on the whole system in the frequency range of 30-1800 MHz (first phase), and we calibrated its broadband antenna with a measurement system. We present the capabilities of the wideband spectrum monitoring system to measure radio frequency signals, with the limited size, weight, and power consumption of the designed system. The working spectrum measurement system was tested on the top of the roof of building V1 at BME University and An-echoic chamber, we were able to show that there is significant radio frequency smog caused by the upper HF band, FM band, VHF band, UHF band, LTE band, GSM band, 4G band, and UMTS band. This is relevant to the main mission target of MRC-100
Trends. Chairman Arafat and the United States (U.S.) Holocaust Museum: What is Good, What is Evil, What is Human?
No full textThe author discusses the possible visit of Yasir Arafat to the US Holocaust Museum
Resonant Radar Reflector On VHF / UHF Band Based on BPSK Modulation at LEO Orbit by MRC-100 Satellite
No full textThis paper presents a novel method for identify ing and tracking PocketQube satellites: the MRC-100 satellite is a model, and this method is based on a resonant radar reflec tor. The resonant reflector’s basic concept is that the resonant reflector uses a VHF/UHF communication subsystem antenna; there is no radiated RF signal, which means the power con sumption is only some Milliampere (mA). The continuous wave (CW) illuminator RF source is on the ground, and the onboard antenna receives the CW RF signal from the Earth. The micro controller (uC) periodically switches PIN diode forming BPSK modulated signal reflection so that another Earth station can receive the backscattered Binary Phase Shift Keying (BPSK) modulated signal. Also, it can detect the satellite if the ground station receiver can use a matched filter like a correlation re ceiver. If the ground station receiver knows the BPSK code of the satellite, it can detect it. If not, there is no way to detect the satellite. This method is similar to Radio Frequency Identifica tion (RFID) applications, but the reader is the ground station, and the tag is the satellite
Effects of vegetation on gravel-bed river channel formation
No full textGreen Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Environmental Fluid MechanicsWater Resource
Transport and resealing dynamics of two pulse electroporation mediated molecular delivery
No full textElectroporation-mediated molecular delivery is of interest for many drug-delivery and gene-therapy applications. Recent studies have shown that a two-pulse protocol consisting of a short-duration high-voltage first pulse followed by a longer, low-voltage second pulse can increase the efficiency of molecular delivery and preserve more cells alive with suitably chosen pulsing parameters. In this work we investigate the effects of the first and second pulses’ field strength and the inter-pulse delay time on the delivery of two different-sized Fluorescein-Dextran conjugates (10 kDa and 70 kDa). A series of two-pulse electroporation experiments were performed on 3T3 mouse fibroblast cells, with an alternating-current first pulse to permeabilize the cell, followed by a direct-current second pulse to electrophoretically deliver the target molecule into the cell. Our results showed that the delivery amounts of Fluorescein-Dextran varies strongly with the first pulse's field strength and target molecule size. By varying the delay times between two pulses, it is shown that the delivered intracellular concentration of Fluorescein-Dextran decreased linearly with the logarithm of delay time. The data also indicate that membrane resealing after electropermeabilization occurs very rapidly, but that a non-negligible fraction of the pores can be reopened by the second pulse for times on the order of 100 s. The role of the second pulses is seen to be more than just electrophoresis, with a minimum threshold field strength required to reopen nano-sized pores or defects remaining from the first pulse. These results suggest that membrane electroporation, sealing, and reporation is a complex process that has both short-term and long-term components, which may in part explain the wide variation in membrane-resealing times reported in the literature.M.S.Includes bibliographical referencesby Yasir Demiryure
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