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Renata Reisfeld
Renata Reisfeld (Hebrew: רנטה ריספלד, née Sobel) is an Israeli Professor of Chemistry and D.H.C. Enrique Berman Professor of Solar Energy at Institute of Chemistry of the Hebrew University of Jerusalem, Israel, author of 532 scientific papers cited more than 30,000 times. Biography Renata Sobel was born in Chelm, Poland in 1930. She came to Israel in 1950 and graduated from the Hebrew University of Jerusalem. Her husband is Lazar Eliezer Reisfeld; her children are Danny and Gideon. Reisfeld became the head of the science research team at The Institute of Chemistry of the Hebrew University of Jerusalem in 1975. Reisfeld's research interests are luminescent solar concentrators for decreasing the price of photovoltaic electricity, interaction of nanoparticles with luminescent species, anti-reflecting coating, and Sol-Gel glasses. She began developing solar concentrators with her research team in 1978. From 2007 until 2010, Reisfeld acted at GreenSun Energy Ltd as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chełm
Chełm (; uk, Холм, Kholm; german: Cholm; yi, כעלם, Khelm) is a city in southeastern Poland with 60,231 inhabitants as of December 2021. It is located to the south-east of Lublin, north of Zamość and south of Biała Podlaska, some from the border with Ukraine. Chełm used to be the capital of the Chełm Voivodeship until it became part of the Lublin Voivodeship in 1999. The city is of mostly industrial character, though it also features numerous notable historical monuments and tourist attractions in the Old Town. Chełm is a multiple (former) bishopric. Its name comes from the Proto-Slavic or Celtic word "cholm", a hill, in reference to the Wysoka Górka fortified settlement. Chełm was once a vibrant multicultural and religious centre populated by Roman Catholics, Orthodox Christians, Protestants and Jews. The population was homogenized after World War II. History The first traces of settlement in the area of modern Chełm date back to at the least 9th centur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Sydney
The University of Sydney (USYD), also known as Sydney University, or informally Sydney Uni, is a public research university located in Sydney, Australia. Founded in 1850, it is the oldest university in Australia and is one of the country's six sandstone universities. The university comprises eight academic faculties and university schools, through which it offers bachelor, master and doctoral degrees. The university consistently ranks highly both nationally and internationally. QS World University Rankings ranked the university top 40 in the world. The university is also ranked first in Australia and fourth in the world for QS graduate employability. It is one of the first universities in the world to admit students solely on academic merit, and opened their doors to women on the same basis as men. Five Nobel and two Crafoord laureates have been affiliated with the university as graduates and faculty. The university has educated eight Australian prime ministers, including ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Honorary Degree
An honorary degree is an academic degree for which a university (or other degree-awarding institution) has waived all of the usual requirements. It is also known by the Latin phrases ''honoris causa'' ("for the sake of the honour") or ''ad honorem '' ("to the honour"). The degree is typically a doctorate or, less commonly, a master's degree, and may be awarded to someone who has no prior connection with the academic institution or no previous postsecondary education. An example of identifying a recipient of this award is as follows: Doctorate in Business Administration (''Hon. Causa''). The degree is often conferred as a way of honouring a distinguished visitor's contributions to a specific field or to society in general. It is sometimes recommended that such degrees be listed in one's curriculum vitae (CV) as an award, and not in the education section. With regard to the use of this honorific, the policies of institutions of higher education generally ask that recipients ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Operation Entebbe
Operation Entebbe, also known as the Entebbe Raid or Operation Thunderbolt, was a counter-terrorist hostage-rescue mission carried out by commandos of the Israel Defense Forces (IDF) at Entebbe Airport in Uganda on 4 July 1976. A week earlier, on 27 June, an Air France Airbus A300 jet airliner with 248 passengers had been hijacked by two members of the Popular Front for the Liberation of Palestine – External Operations (PFLP-EO) under orders of Wadie Haddad (who had earlier broken away from the PFLP of George Habash), and two members of the German Revolutionary Cells. The hijackers had the stated objective to free 40 Palestinian and affiliated militants imprisoned in Israel and 13 prisoners in four other countries in exchange for the hostages. The flight, which had originated in Tel Aviv with the destination of Paris, was diverted after a stopover in Athens via Benghazi to Entebbe, the main airport of Uganda. The Ugandan government supported the hijackers, and dictator I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
GreenSun Energy
GreenSun Energy is a Jerusalem-based Israeli company that has developed a new process for producing electricity from solar energy. As The Economist points out, solar energy is a logical development since "Israel is a country with plenty of sunshine, lots of sand and quite a few clever physicists and chemists." Solar energy in Israel; It's a knockout, Jul 23rd 2009, The Economist print editio/ref> The company was founded in 2012 with the goal of helping businesses and individuals reduce their carbon footprint and save money on energy costs. GreenSun Energy operates in a number of locations across the United States, and offers a variety of financing options to make it easier for customers to adopt renewable energy technologies. Process Traditional photovoltaic cells are made from thin sheets of silicon covered by glass plates. In the GreenSun process, it is only the outer edges of the glass plates that are covered by thin strips of silicon. The physicists and chemists at GreenSun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nanoparticles
A nanoparticle or ultrafine particle is usually defined as a particle of matter that is between 1 and 100 nanometres (nm) in diameter. The term is sometimes used for larger particles, up to 500 nm, or fibers and tubes that are less than 100 nm in only two directions. At the lowest range, metal particles smaller than 1 nm are usually called atom clusters instead. Nanoparticles are usually distinguished from microparticles (1-1000 µm), "fine particles" (sized between 100 and 2500 nm), and "coarse particles" (ranging from 2500 to 10,000 nm), because their smaller size drives very different physical or chemical properties, like colloidal properties and ultrafast optical effects or electric properties. Being more subject to the brownian motion, they usually do not sediment, like colloidal particles that conversely are usually understood to range from 1 to 1000 nm. Being much smaller than the wavelengths of visible light (400-700 nm), nano ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Photovoltaic Electricity
A photovoltaic system, also PV system or solar power system, is an electric power system designed to supply usable solar power by means of photovoltaics. It consists of an arrangement of several components, including solar panels to absorb and convert sunlight into electricity, a solar inverter to convert the output from direct to alternating current, as well as mounting, cabling, and other electrical accessories to set up a working system. It may also use a solar tracking system to improve the system's overall performance and include an integrated battery. PV systems convert light directly into electricity, and are not to be confused with other solar technologies, such as concentrated solar power or solar thermal, used for heating and cooling. A solar array only encompasses the ensemble of solar panels, the visible part of the PV system, and does not include all the other hardware, often summarized as balance of system (BOS). PV systems range from small, rooftop-mounted or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Luminescent Solar Concentrator
A luminescent solar concentrator (LSC) is a device for concentrating radiation, Non-ionizing radiation, solar radiation in particular, to produce electricity. Luminescent solar concentrators operate on the principle of collecting radiation over a large area, converting it by luminescence (specifically by fluorescence) and directing the generated radiation into a relatively small output target. Design Initial designs typically comprised parallel thin, flat layers of alternating luminescent and transparent materials, placed to gather incoming radiation on their (broader) faces and emit concentrated radiation around their (narrower) edges. Commonly the device would direct the concentrated radiation onto solar cells to generate electric power. Other configurations (such as Dopant, doped or coated optical fibers, or contoured stacks of alternating layers) may better fit particular applications. Structure and principles of operation The layers in the stack may be separate paral ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Research Group Of Professor Renata Reisfeld
Research is " creative and systematic work undertaken to increase the stock of knowledge". It involves the collection, organization and analysis of evidence to increase understanding of a topic, characterized by a particular attentiveness to controlling sources of bias and error. These activities are characterized by accounting and controlling for biases. A research project may be an expansion on past work in the field. To test the validity of instruments, procedures, or experiments, research may replicate elements of prior projects or the project as a whole. The primary purposes of basic research (as opposed to applied research) are documentation, discovery, interpretation, and the research and development (R&D) of methods and systems for the advancement of human knowledge. Approaches to research depend on epistemologies, which vary considerably both within and between humanities and sciences. There are several forms of research: scientific, humanities, artistic, econom ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
