7 research outputs found
Combined aberrant expression of N-Myc downstream-regulated gene 2 and CD24 is associated with disease-free survival and overall survival in patients with hepatocellular carcinoma
The Berzdorf lake as the main user in the water economy balance of the Nysa Luzycka river
Nysa Łużycka jest rzeką o stosunkowo ubogich zasobach wodnych, na co
nakłada się silna antropopresja. Zjawiskiem charakterystycznym jest ciągła
zmienność przepływów w profilu podłużnym rzeki. Zasadniczy wpływ na zasoby
wodne zlewni Nysy Łużyckiej ma górnictwo węgla brunatnego i towarzyszące mu
inwestycje, polskie i niemieckie kopalnie i elektrociepłownie. Wyrobisko pokopalniane
po zamkniętej w 1997 roku niemieckiej kopalni Berzdorf poddawane jest
rekultywacji przez zalewanie wodami Nysy Łużyckiej i jej lewostronnego dopływu
Pliessnitz. Obliczenia bilansowe zasobów wodnych w zlewni pozwalają na
określenie takich warunków poboru wody, które stanowią kompromis między koniecznością
zalania wyrobiska, a skutkami poboru dla środowiska i zlokalizowanych
poniżej użytkowników. Konieczne jest zagwarantowanie nie tylko przepływu
nienaruszalnego ekologicznie uzasadnionego, ale i utrzymania minimalnych przepływów
gwarantowanych dla 19 polskich i niemieckich elektrowni wodnych.
Powstałe w wyniku zalewania wyrobiska jezioro Berzdorf jest głównym
użytkownikiem wód powierzchniowych w zlewni Nysy Łużyckiej. Zbiornik usytuowany
jest między miejscowościami Tauchritz i Klein Neudorf na zachód od
lewego brzegu rzeki, ok. 10 km powyżej wodowskazu Zgorzelec. Instalacja
umożliwia maksymalny pobór w ilości 10 m3/s, a warunkiem poboru jest zachowanie
przepływu granicznego w Nysie Łużyckiej w ilości Qgr = 13,3 m3/s.The Nysa Łużycka River is a relatively poor river in terms of water resources
which results in strong anthropoperssion. A characteristic phenomenon is
a continuous discharge changeability in the river longitudinal profile. Brown coal
mining and accompanying them investments, Polish and German mines as well as
power plants have a major influence on The Nysa Łużycka river basin. Postmining
working closed in 1997 after German Bezdorf Mine is under rehabilitation
by flooding waters of the Nysa Łużycka River and its left tributary, namely The
Pliessnitz. The calculation of water resources balance allows to establish such
conditions of water intake which represent a compromise between the need to
flood the working and the effects of water abstraction on the environment and users
located below. It is necessary not only to ensure an ecologically reasonable inviolable
discharge but also maintain the minimal discharges guaranteed for 19
Polish and German water power plants. Working resulting from the flooding of the
Berzdorf Lake is the main user of surface water in the Nysa Łużycka river basin.
The reservoir is situated between the cities of Tauchritz and Klein Neudorf, west of
the left bank of the river, about 10 kilometers above Zgorzelec watergauge. The
installation provides maximum intake in the amount of 10 m3/s under the condition
that the threshold of the discharge is maintained in the amount of Qgr = 13,3 m3/s
CTA contributions to the 33rd International Cosmic Ray Conference (ICRC2013)
Compilation of CTA contributions to the proceedings of the 33rd International
Cosmic Ray Conference (ICRC2013), which took place in 2-9 July, 2013, in Rio de
Janeiro, BrazilComment: Index of CTA conference proceedings at the ICRC2013, Rio de Janeiro
(Brazil). v1: placeholder with no arXiv links yet, to be replaced once
individual contributions have been all submitted. v2: final with arXiv links
to all CTA contributions and full author lis
Introducing the CTA concept
The Cherenkov Telescope Array (CTA) is a new observatory for very high-energy (VHE) gamma rays. CTA has ambitions science goals, for which it is necessary to achieve full-sky coverage, to improve the sensitivity by about an order of magnitude, to span about four decades of energy, from a few tens of GeV to above 100 TeV with enhanced angular and energy resolutions over existing VHE gamma-ray observatories. An international collaboration has formed with more than 1000 members from 27 countries in Europe, Asia, Africa and North and South America. In 2010 the CTA Consortium completed a Design Study and started a three-year Preparatory Phase which leads to production readiness of CTA in 2014. In this paper we introduce the science goals and the concept of CTA, and provide an overview of the project
Introducing the CTA concept
The Cherenkov Telescope Array (CTA) is a new observatory for very high-energy (VHE) gamma rays. CTA has ambitions science goals, for which it is necessary to achieve full-sky coverage, to improve the sensitivity by about an order of magnitude, to span about four decades of energy, from a few tens of GeV to above 100 TeV with enhanced angular and energy resolutions over existing VHE gamma-ray observatories. An international collaboration has formed with more than 1000 members from 27 countries in Europe, Asia, Africa and North and South America. In 2010 the CTA Consortium completed a Design Study and started a three-year Preparatory Phase which leads to production readiness of CTA in 2014. In this paper we introduce the science goals and the concept of CTA, and provide an overview of the project. © 2013 Elsevier B.V. All rights reserved