16 resultater (0,31164 sekunder)

Vis alle filtre

Mærke

Butik

Pris (EUR)

Nulstil filter

Produkter
Fra
Butikker

B Boron Compounds - Lawrence Barton - Bog - Springer-Verlag Berlin and Heidelberg GmbH & Co. KG - Plusbog.dk

B Boron Compounds - Lawrence Barton - Bog - Springer-Verlag Berlin and Heidelberg GmbH & Co. KG - Plusbog.dk

A broad coverage of boron topics is provided. Structural elucidations and convenient routes to useful hydroboration reagents are presented as well as boron compounds used for medical purposes. Special attention is devoted to theoretical studies and calculations on small boron-hydrogen and boron-noble gas species including molecules like BH, which are rather favorite subjects of theoreticians for testing various methods of calculation.

DKK 567.00
1

Wound Ballistics - - Bog - Springer-Verlag Berlin and Heidelberg GmbH & Co. KG - Plusbog.dk

Wound Ballistics - - Bog - Springer-Verlag Berlin and Heidelberg GmbH & Co. KG - Plusbog.dk

The definitive interdisciplinary reference work for wound ballistics Fundamentals in Physics, arms and ammunition, ballistics Simulating gunshot wounds: Virtopsy - a virtual autopsy method, combining CT, MRT and surface scanning and Materials that reproduce the interaction of soft tissue, bone and blood vessels with a bullet that penetrates the body. Wound ballistics for Short-range and long-range weapons, fragments, such as those from bombs and hand grenades, gas jets from blanks, gas weapons, etc., "Non-lethal" weapons as used by the police, in military operations or in urban settings Specialist knowledge and reference detailed tables: ballistic tables for typical ammunition, ballistic values for numerous types of ammunition, including older types, materials properties, plus additional, hard-to-find data. Most tables are in both metric and U.S. units., an extensive trilingual glossary of specialized terminology in German, English and French NEW: the latest diagnostic / simulation methods and the latest types of ammunition The practice and application of wound ballistics in: forensic medicine, surgery - especially emergency and war surgery and international conventions Globalized conflict zones, terrorism and crime - these issues affect a wider circle than just the armed forces and medical services abroad. Police officers, surgeons, forensics specialists and criminalists also need to be familiar with ballistics and gunshot wounds and must be able to assess the complex factors involved. The practice and application of wound ballistics in forensic medicine. surgery - especially emergency and war surgery and International conventions. Globalized conflict zones, terrorism and crime - these issues affect a wider circle than just the armed forces and medical services abroad. Police officers, surgeons, forensics specialists and criminalists also need to be familiar with ballistics and gunshot wounds and must be able to assess the complex factors involved.

DKK 941.00
1

Humidification in the Intensive Care Unit - - Bog - Springer-Verlag Berlin and Heidelberg GmbH & Co. KG - Plusbog.dk

Humidification in the Intensive Care Unit - - Bog - Springer-Verlag Berlin and Heidelberg GmbH & Co. KG - Plusbog.dk

Inadequate humidification of inspired gases can cause a variety of serious problems, and humidification has accordingly become an important aspect of modern intensive care medicine. This book is designed to serve as a practical guide for clinicians, providing information on the theoretical background of humidification, the equipment, and its optimal use. The book starts by examining the physiological basis of humidification. Current devices are then discussed, with careful attention to factors influencing their performance and methods to evaluate their effectiveness. The two scenarios of mechanical and non-mechanical ventilation are considered, and the issue of ventilator-associated pneumonia is addressed in detail. Further chapters focus on such topics as humidification following tracheostomy, humidification of the artificial airway during secretion management, measurement of inspired gas temperature in the ventilated neonate, and humidification in the home care setting.

DKK 877.00
1

Sensor Projects with Raspberry Pi - Guillermo Guillen - Bog - Springer-Verlag Berlin and Heidelberg GmbH & Co. KG - Plusbog.dk

Sensor Projects with Raspberry Pi - Guillermo Guillen - Bog - Springer-Verlag Berlin and Heidelberg GmbH & Co. KG - Plusbog.dk

Use Python to develop Rasperry Pi projects to solve common digital image processing and IoT problems. Using a free IoT server you’ll tackle fundamental topics and concepts behind theses two areas. This second edition includes new content on Artificial Intelligence and updated sensor guidance to help you better explore virtual animations, create a homemade spectrometer, and master object classification with Edge Impulse. Start by creating a system to detect movement with a PIR motion sensor and a Raspberry Pi board. Use the MQ2 gas sensor and a Raspberry Pi board as a gas leak alarm system to detect dangerous explosive and fire hazards. Then train your system to send the captured data to the remote server ThingSpeak. You’ll also develop a weather station with your Raspberry Pi. Using the DHT11 (humidity and temperature sensor) and BMP (barometric pressure and temperature sensor) in conjunction with ThingSpeak and X, you can receive real time weather alerts from your own meterological system!Spectral sensers used with the Raspberry Pi include the AS7262 (six colors), and AS7263 (near infrared) for the construction of a filter spectrometer, sensing colored solutions, and assessing plant foliage health. Finally, expand your skills into the popular machine learning world of digital image processing using OpenCV and a Pi. Make your own object classifiers and finally manipulate an object by means of an image in movement. This skillset has many applications, ranging from recognizing people or objects, to creating your own video surveillance system. With the skills gained from Sensor Projects with Raspberry Pi, you'll be well-equipped to explore other applications in mobile development and electrical engineering as well. What You'll LearnWork with ThingSpeak to receive X alerts from your systems. Cultivate skills in processing sensor inputs that are applicable to mobile and machine learning projects. Incorporate sensors into projects to make interactive devices. Experiment with virtual scenarios and objects. Create Python and Pygame games that contain virtual scenarios and animations. Detect colored solutions and assess the plant foliage health. Who This Book Is ForHobbyists and makers working with robotics and IoT. Electronic engineers and programmers who would like to expand their familiarity with basic sensor projects.

DKK 468.00
1

PLC SCADA for Beginners - Ashraf Said Almadhoun - Bog - Springer-Verlag Berlin and Heidelberg GmbH & Co. KG - Plusbog.dk

PLC SCADA for Beginners - Ashraf Said Almadhoun - Bog - Springer-Verlag Berlin and Heidelberg GmbH & Co. KG - Plusbog.dk

This book provides a thorough introduction to the fundamental concepts and technologies of Programmable Logic Controllers (PLCs) and Supervisory Control and Data Acquisition (SCADA) systems. It is designed for beginners and those new to the field, offering a clear and concise overview of the basics of PLCs, SCADA systems, and their applications in various industries. The book covers key components of PLCs and SCADA systems, including programming languages and communication methods, and provides practical tips and techniques for troubleshooting and maintenance. With numerous examples and exercises, this book offers hands-on experience for readers to deepen their understanding of these concepts and technologies. What You'll LearnThe fundamentals of PLC and SCADA systems. How to install, program, maintain, and troubleshoot these systemsReal-world applications and how to implement these technologies effectively. Who Is This Book ForThis book is intended for electrical and control engineers, automation technicians, students, and educators in fields such as electrical engineering, control systems, and automation. Industry professionals from various sectors such as manufacturing, oil and gas, water and wastewater treatment, power generation, and distribution will also find this book useful.

DKK 595.00
1

111 Calculation Exercises in the Field of Chemical Technology - Gunter Juptner - Bog - Springer-Verlag Berlin and Heidelberg GmbH & Co. KG -

111 Calculation Exercises in the Field of Chemical Technology - Gunter Juptner - Bog - Springer-Verlag Berlin and Heidelberg GmbH & Co. KG -

Everyday use in chemical production operations requires a complex bundle of basic knowledge for calculating various operating parameters and variables. This includes the application of mass and heat balances, the ideal gas law, the mass action law and electrochemistry. In addition, there are calculations for the pumping of liquids and for scale enlargement. The present work covers this subject area in a clear manner in the form of exercises. The author knows from many years of practical experience that such calculations are often not isolated problems, but complex issues in which various subject areas are coupled together. This fact is taken into account in this exercise book. It presents in a short and concise form the everyday challenges of calculations in a chemical plant and offers ways of solving them. Special basic operations are not treated, and reference is made to special works that treat such topics in detail. This exercise book offers the possibility of deepening the knowledge of solving the calculations that occur daily in a chemical production plant.

DKK 468.00
1

P Phosphorus - Reinhard Haubold - Bog - Springer-Verlag Berlin and Heidelberg GmbH & Co. KG - Plusbog.dk

P Phosphorus - Reinhard Haubold - Bog - Springer-Verlag Berlin and Heidelberg GmbH & Co. KG - Plusbog.dk

This volume C 1 is the first supplement volume to "Phosphor" C which was published in 1965 and covers the compounds of phosphorus. Starting with the binary species formed between phosphorus and hydrogen, the present volume deals with the neutral mononuclear compounds PH through PH ; the ions featuring the same stoichiometric composition are s covered in separate sections. PH and PH are the major initial gaseous decomposition products of PH and, thus, also 2 J intermediates in many of its gas-phase reactions. Both molecules and their ions have been thoroughly investigated by a variety of modern, high-resolution spectroscopic methods during the last three decades. The coverage of their physical, and mostly molecular, properties re­ presents the largest part of the first two chapters (PH and ions pp. 2 to 47; PH and ions pp. 47 2 to 111). PH is the only compound described in this volume which is thermally stable under normal J conditions. It is the phosphorus analog of ammonia, but exhibits, however, a quite different chemical behavior towards most elements and compounds. The majority of its physical, and in particular spectroscopic, properties have been determined in great detail since the sixties, partially in regard to spectroscopic investigations of the atmospheres of the outer planets.

DKK 567.00
1

S Sulfur-Nitrogen Compounds - Hans Jurgen Fachmann - Bog - Springer-Verlag Berlin and Heidelberg GmbH & Co. KG - Plusbog.dk

S Sulfur-Nitrogen Compounds - Hans Jurgen Fachmann - Bog - Springer-Verlag Berlin and Heidelberg GmbH & Co. KG - Plusbog.dk

The present volume is the first of a series describing acyclic sulfur-nitrogen compounds with sulfur of oxidation number IV. The acyclic sw-N compounds are arranged according to the coordination number of the sulfur. Neutral compounds are described before ions and complex compounds. The preceding series "Sulfur-Nitrogen Compounds" Parts 2, 3, and 4 covers the cyclic sw-N compounds. In this volume, the first section deals with sulfur-nitrogen compounds with 1-coordinate sulfur and begins with the sulfur nitride {thiazyl) radical, SN. This transient molecule was observed in its electronic ground state and several electronically excited states. The descrip­ tions of the sulfur nitride (thiazyl) ions SN+ and SW follow. The SN+ ionwas studied in the gas phase as weil as in the solid state where it forms salts. Thionitrosyl complexes containing the SN Iigand as a terminal linear unit are described at the end of the first section. The second section concerns Sulfur-nitrogen compounds with 2-coordinate sulfur and starts with the description of poly(sulfur nitride), (SNlx· The preparation, crystal structure, and metallic and superconducting properties of (SN)x, which were extensively studied, fill a !arge part of the volume. Halogen-modified poly(sulfur nitride) such as the widely studied (SNBr )x 04 and Na-modified poly(sulfur nitride) are dealt with in the following chapters.

DKK 663.00
1

Si Silicon - - Bog - Springer-Verlag Berlin and Heidelberg GmbH & Co. KG - Plusbog.dk

Si Silicon - - Bog - Springer-Verlag Berlin and Heidelberg GmbH & Co. KG - Plusbog.dk

This volume concludes the coverage of silicon carbide, SiC, begun in "Silicon" Supplement Volume B 2, 1984, subtitled "Silicon Carbide - Part I". Part I described the physical properties of SiC, SiC diodes, molecular species in the SiC-C gas phase, and amorphous silicon-carbon alloys. The current Part II ("Silicon" Supplement Volume B 3,1986) covers in its initial chapter the Si-C phase diagram and in the final chapters the higher order systems of Si and C with additional elements through boron, arranged according to the Gmelin system. In between some 95% of the volume focusses on SiC, beginning with its natural occurrence, preparation and formation, and purification, continuing with its chemical analysis, manufacture of special­ ized forms, electrochemistry, and chemical reactions, and concluding with descriptions of its myriad applications. The final applications section covering electronic devices also describes similar applications of the amorphous Si-C alloys. The successive chapters in this volume are often closely interrelated, since it is often necessary to synthesize SiC directly in a form in which it will be applied. SiC cannot be melted and cast, nor rolled nor drawn, nor is it easily electroplated or sintered or purified. Silicon carbide first became known to man when E. G. Acheson in 1891 used an electric current to heat a mixture of clay and carbon to extremely high temperatures.

DKK 663.00
1

The fourth generation of nuclear reactors - Thomas Schulenberg - Bog - Springer-Verlag Berlin and Heidelberg GmbH & Co. KG - Plusbog.dk

The fourth generation of nuclear reactors - Thomas Schulenberg - Bog - Springer-Verlag Berlin and Heidelberg GmbH & Co. KG - Plusbog.dk

This book is intended for readers who want to learn more about fourth-generation nuclear reactors without having to delve deeply into nuclear technology. These nuclear reactors are a number of visionary concepts for which special criteria have been set by the Generation IV International Forum with regard to safety, sustainability and economic efficiency. The book therefore describes, among other things, innovative water- and liquid-metal-cooled reactors, high-temperature and molten-salt reactors, and discusses their significance for the economy and society. The author imparts relevant basic knowledge of nuclear technology and then uses some illustrative examples to show what future opportunities this fourth generation of nuclear reactors will offer, but also what challenges will be associated with it. About the author Prof. Dr. -Ing. Thomas Schulenberg studied physics and mechanical engineering and received his doctorate in the field of sodium-cooled reactors. During his fourteen-year industrial career, he developed gas turbines for conventional power plants. Since 2000, Prof. Schulenberg was the head of the Institute for Nuclear and Energy Technology at the Karlsruhe Institute of Technology, where he lectured on conventional power plant technology as well as nuclear power plant technology. As a member of the steering committee for fourth-generation water-cooled reactors, he was actively involved in the Generation IV International Forum for many years.

DKK 385.00
1

N Nitrogen - Reinhard Haubold - Bog - Springer-Verlag Berlin and Heidelberg GmbH & Co. KG - Plusbog.dk

N Nitrogen - Reinhard Haubold - Bog - Springer-Verlag Berlin and Heidelberg GmbH & Co. KG - Plusbog.dk

"Nitrogen" Suppt. Vol. B 1 describes the compounds of nitrogen with noble gases and, in the major part, binary compounds composed of one nitrogen atom and hydrogen. Nitrogen­ hydrogen compounds with two and more nitrogen atoms are covered in "Nitrogen" Suppt. Vol. 82. There is some information on various nitrogen-noble gas species, to a large extent because of the interest in their bonding behavior. Experimental data have been obtained chiefly for some singly charged cations, particularly those formed by argon Like ArN + and ArNi. The existence of others has only been established by mass spectrometry. The binary compounds of nitrogen and hydrogen comprise NH, NH , NH , NH , the corre­ 2 4 5 sponding ions, and some adducts. NH and NH1 are not treated. The predominant part 3 of the volume covers the description of the molecules NH and NH . 8oth species are present 2 in photolytic processes in the atmosphere. They play an essential role in combustion systems regardless of whether the nitrogen stems from the nitrogen-containing fuel or from the air. Thus, much work has been devoted to the understanding of the nitrogen chemistry in combustion and in the atmosphere. The production and detection methods as weiL as the reactions have been comprehensively described. ln addition detailed information is given on the spectral behavior, the knowledge of which is important for detecting the mole­ cules and for studying their kinetics.

DKK 567.00
1

Tumour Diagnostics of the Liver with Echo Enhancers - Bernhard Gassmann - Bog - Springer-Verlag Berlin and Heidelberg GmbH & Co. KG - Plusbog.dk

Tumour Diagnostics of the Liver with Echo Enhancers - Bernhard Gassmann - Bog - Springer-Verlag Berlin and Heidelberg GmbH & Co. KG - Plusbog.dk

This atlas covers "virgin territory in the field of sonography". tumours, all of these have allowed us to derive general statements as Cultivation of this territory has been made possible a) by the develop­ to signal enhancement in different types of liver lesion. ment of a signal enhancement agent consisting of gas microbubbles which are able to pass through the lungs and are capable of re­ Here, similarities were found with other imaging procedures which sonance and b) by the technical realisation of 2nd harmonic imaging. also make use of contrast agents. Both of these have been available to us since April 1996. Haemangiomas receive special attention in this book. This is due This book stems from the particular situation of a long friendship to their frequent occurrence and the outstanding improvements in dia­ between a physicist with medical knowledge and a physician with gnosis which are provided by echo enhancers. technical expertise. The equipment settings and the examination pro­ cedure which form the basis for the images in the atlas are the result We are convinced that an echo-enhanced sonography that pro­ of intensive efforts, originating in a desire to achieve the maximum vides few artefacts will have an important role to play in the future. that is physically feasible and clinically desirable. This procedure is Our results to date justify the assumption that additional diagnostic now routine in our Sonography Department. procedures can be dispensed with when echo-enhanced ultrasound findings are clear.

DKK 663.00
1

Cold Breath of Dormant Volcanoes - Hardy Pfanz - Bog - Springer-Verlag Berlin and Heidelberg GmbH & Co. KG - Plusbog.dk

Cold Breath of Dormant Volcanoes - Hardy Pfanz - Bog - Springer-Verlag Berlin and Heidelberg GmbH & Co. KG - Plusbog.dk

This work, written in an understandable way for the interested layperson, leads into the unknown world of the CO 2 gas volcanoes, the so-called mofettes , on. A little explored world that lets animals die in the middle of Europe, changes the flora, influences soils and the atmosphere and can provide clues for upcoming volcanic eruptions. With the help of the botanical bioindication, such degassing points can also be found in the field and even used economically, e.g. in mineral water and fire extinguishers, for the preservation of food and for the healing of heart and skin diseases. In this biological-geological mofette guide, Prof. Hardy Pfanz explains where such phenomena can be found in Germany, but also worldwide, and what they tell us. He also reveals - with a wink - one or the other extraordinary and legendary thing about Mofetten. This book is a translation of the original German 2 nd edition Kalter Atem schlafender Vulkane by Hardy Pfanz, published by Springer-Verlag GmbH Germany, part of Springer Nature in 2019. The translation was done with the help of artificial intelligence (machine translation by the service DeepL.com). A subsequent human revision was done primarily in terms of content, so that the book will read stylistically differently from a conventional translation. Springer Nature works continuously to further the development of tools for the production of books and on the related technologies to support the authors.

DKK 264.00
1

Basic Concepts in Physics - Anca Tureanu - Bog - Springer-Verlag Berlin and Heidelberg GmbH & Co. KG - Plusbog.dk

Basic Concepts in Physics - Anca Tureanu - Bog - Springer-Verlag Berlin and Heidelberg GmbH & Co. KG - Plusbog.dk

This book is the second edition of an excellent undergraduate-level overview of classical and modern physics, intended for students of physics and related subjects, and also perfectly suited for the education of physics teachers. The twelve-chapter book begins with Newton''s laws of motion and subsequently covers topics such as thermodynamics and statistical physics, electrodynamics, special and general relativity, quantum mechanics and cosmology , the standard model and quantum chromodynamics. The writing is lucid, and the theoretical discussions are easy to follow for anyone comfortable with standard mathematics. An important addition in this second edition is a set of exercises and problems, distributed throughout the book. Some of the problems aim to complement the text, others to provide readers with additional useful tools for tackling new or more advanced topics. Furthermore, new topics have been added in several chapters; for example, the discovery of extra-solar planets from the wobble of their mother stars, a discussion of the Landauer principle relating information erasure to an increase of entropy, quantum logic, first order quantum corrections to the ideal gas equation of state due to the Fermi-Dirac and Bose-Einstein statistics. Both gravitational lensing and the time-correction in geo-positioning satellites are explained as theoretical applications of special and general relativity. The discovery of gravitational waves, one of the most important achievements of physical sciences, is presented as well. Professional scientists, teachers, and researchers will also want to have this book on their bookshelves, as it provides an excellent refresher on a wide range of topics and serves as an ideal starting point for expanding one''s knowledge of new or unfamiliar fields. Readers of this book will not only learn much about physics, they will also learn to love it.

DKK 634.00
1

Basic Concepts in Physics - Masud Chaichian - Bog - Springer-Verlag Berlin and Heidelberg GmbH & Co. KG - Plusbog.dk

Basic Concepts in Physics - Masud Chaichian - Bog - Springer-Verlag Berlin and Heidelberg GmbH & Co. KG - Plusbog.dk

This book is the second edition of an excellent undergraduate-level overview of classical and modern physics, intended for students of physics and related subjects, and also perfectly suited for the education of physics teachers. The twelve-chapter book begins with Newton''s laws of motion and subsequently covers topics such as thermodynamics and statistical physics, electrodynamics, special and general relativity, quantum mechanics and cosmology , the standard model and quantum chromodynamics. The writing is lucid, and the theoretical discussions are easy to follow for anyone comfortable with standard mathematics. An important addition in this second edition is a set of exercises and problems, distributed throughout the book. Some of the problems aim to complement the text, others to provide readers with additional useful tools for tackling new or more advanced topics. Furthermore, new topics have been added in several chapters; for example, the discovery of extra-solar planets from the wobble of their mother stars, a discussion of the Landauer principle relating information erasure to an increase of entropy, quantum logic, first order quantum corrections to the ideal gas equation of state due to the Fermi-Dirac and Bose-Einstein statistics. Both gravitational lensing and the time-correction in geo-positioning satellites are explained as theoretical applications of special and general relativity. The discovery of gravitational waves, one of the most important achievements of physical sciences, is presented as well. Professional scientists, teachers, and researchers will also want to have this book on their bookshelves, as it provides an excellent refresher on a wide range of topics and serves as an ideal starting point for expanding one''s knowledge of new or unfamiliar fields. Readers of this book will not only learn much about physics, they will also learn to love it.

DKK 468.00
1

AI for Utilities - Dr. Debashish Roy - Bog - Springer-Verlag Berlin and Heidelberg GmbH & Co. KG - Plusbog.dk

AI for Utilities - Dr. Debashish Roy - Bog - Springer-Verlag Berlin and Heidelberg GmbH & Co. KG - Plusbog.dk

This transformative book explores the power of artificial intelligence (AI) in revolutionizing the utilities industry. It covers crucial topics such as intelligent grids, decentralized energy resources, customer engagement, electric vehicle integration, and more, providing a comprehensive and practical guide to successfully navigate the energy transition. In today''s world, the urgency of addressing climate change and transitioning to sustainable energy systems is undeniable. With approximately 60 percent of global greenhouse gas emissions attributed to the energy sector, utilities play a vital role in achieving sustainability goals. The traditional utility business model faces disruption from renewable energy, changing consumer expectations, and regulatory shifts. Embracing AI emerges as a key solution to optimize operations, enhance grid reliability, and meet evolving customer demands. Through compelling case studies and industry-specific use cases, you will discover how AI drives innovation, improves operational efficiency, and contributes to a greener and more sustainable world. As the demand for cleaner and more sustainable energy practices grows, this book demonstrates how AI can support utilities in meeting these demands, making them more resilient, agile, and customer-centric. Whether you''re a seasoned industry expert or a curious student, this book equips you with the knowledge and insights to embrace sustainability, navigate the complex energy landscape, leverage AI to shape a positive future, and join the movement towards a greener world, empowered by AI''s potential in the utilities industry. What You Will Learn - Understand the challenges and opportunities for utilities in the context of climate change, energy poverty, and the evolving business landscape - Discover how rapid transformation is needed in the utilities sector to overcome challenges and leverage opportunities for a sustainable future - Gain insight into the role of technology, particularly artificial intelligence (AI), as a critical tool for utilities in their transformation journey - Be aware of how AI can be applied in building the future utility industry, including its potential impact on energy efficiency, intelligent energy ecosystems, community engagement, and new business models - Gain knowledge of the adoption of AI and machine learning technologies in the utility industry, including the current state, barriers, significant influencing factors, and an AI adoption maturity model for utilities - Recognize the sustainability imperative for utilities and how AI can help in achieving sustainable energy practices - Become familiar with the transformation of power generation, microgrids, intelligent transmission and distribution systems, utilities retail, mobility through electric vehicles, and the integration of distributed energy resources(DER) using AI - Gain insight into the potential of AI in addressing challenges and driving innovation in the energy ecosystem, such as optimizing power generation assets, enhancing grid intelligence, improving customer service, and enabling clean energy awareness in the metaverse Who This Book Is For Professionals and decision makers in the global utilities industry who want to leverage artificial intelligence (AI) technologies to transform their operations and address challenges and opportunities in the energy sector. This book may also appeal to researchers, academics, and students in the fields of energy engineering, environmental science, data analytics, and AI who want to gain a deeper understanding of AI in the utilities sector and its implications for sustainable energy systems.

DKK 426.00
1