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Free Download Minchao Huang, "Performance Analysis of a Liquid/Gel Rocket Engine During Operation"
English | ISBN: 981976484X | 2025 | 296 pages | EPUB, PDF | 63 MB + 27 MB
This open access book takes space propulsion system, gel propulsion system, and pumped liquid rocket engine as research objects and establishes and describes the theory, dynamic model, and numerical calculation method of working process of liquid/gel rocket engine. The first part of this book establishes a mathematical model for the working process of the space propulsion system, including a mathematical model for gas cylinders, an electric explosion valve, a pressure reducing valve, a storage tank, a liquid pipeline, an orifice and filter, an electromagnetic valve, a filling pipeline, and a thrust chamber. The simulation analyzes the characteristics of the start-up, steady-state, and shutdown processes of the space propulsion system. In the second part, the mathematical model of the working process of gel propulsion system is established, and the flow distribution law, water hammer characteristics, and thrust regulation characteristics of gel propulsion system are simulated and analyzed. The third part establishes a mathematical model for the working process of a pumped liquid rocket engine and simulates and analyzes the starting process characteristics of the pumped liquid rocket engine. The above theory or dynamic model reflects the latest research results of the working process of liquid/gel rocket engine.

Free Download Pathways to Potential: Strategies for Personal and Professional Growth: Transform Your Life with Proven Growth Strategies by Michael Johnson, John Smith, Emily Davis
English | June 25, 2024 | ISBN: N/A | ASIN: B0D8498X7T | 150 pages | EPUB | 0.28 Mb
In 'Pathways to Potential: Strategies for Personal and Professional Growth,' Michael Johnson presents a transformative roadmap to unleash your full potential. Drawing on years of research and personal experience, Johnson guides readers through a comprehensive journey of self-discovery and development. Explore fundamental strategies for setting meaningful goals, cultivating resilience in the face of adversity, and honing essential skills for career advancement and personal satisfaction.

Read More: Palimpsest A Novel

Free Download Larry J. Kolb, "Overworld: The Life and Times of a Reluctant Spy"
English | 2004 | pages: 481 | ISBN: 1573222534 | PDF | 1,7 mb
An intriguing memoir that journeys into the complex and dangerous world of covert statecraft and espionage describes growing up as the son of a high-ranking American spymaster, his refusal to take a job with the CIA in order to pursue a life in business, and his job as an agent for Muhammad Ali, a position that drew him back into the family business. 40,000 first printing.

Free Download Michael H. Safir MD, "Overcoming Urinary Incontinence: A Woman's Guide to Treatment"
English | ISBN: 1886039879 | 2008 | 160 pages | EPUB | 1285 KB
Addressing the most commonly asked questions about incontinence, this accessible reference discusses causes, types of incontinence, and how the condition is diagnosed. The wide range of treatment options is introduced, from pelvic floor therapy and bladder training to electrical stimulation, medications, and surgeries. Eleven million women in the U.S. are coping with urinary incontinence-half of whom are too embarrassed to discuss the matter with their doctors-and this guidebook provides encouragement, showing that in more than 80 percent of cases, treatment can improve or even cure the problem.

Free Download Gerard M Honoré MD PhD, "Overcoming Infertility: A Woman's Guide to Getting Pregnant"
English | ISBN: 188603916X | 2010 | 170 pages | EPUB | 2 MB
Confronting a problem that affects one out of 10 American couples, this all-inclusive, question-and-answer guide offers insight and encouragement in the face of infertility. Addressing the deep disappointment and emotional distress that accompany a diagnosis, this resource emphasizes that there is still hope regarding this daunting condition. Penned by a reputable endocrinologist who has treated thousands of couples, this helpful reference provides a way to navigate through a confusing time, clearly illustrating the most suitable treatment options. Topics covered include the causes of both female and male infertility, how to cope emotionally with a diagnosis, and utilizing the new Assisted Reproductive Technologies (ART). From choosing a fertility specialist to taking advantage of the most recent developments, this exhaustive study provides practical guidance for couples facing this overwhelming syndrome.

Free Download Optische Sensorik: Lasertechnik, Experimente, Light Barriers By Martin Löffler-Mang (auth.)
2012 | 244 Pages | ISBN: 3834814490 | PDF | 20 MB
Dieses Lehrbuch behandelt Grundlagen, wichtige Einzelelemente und Systeme der optischen Sensorik und Messtechnik. So werden im ersten Teil die Ausbreitung von Gauß-Strahlen, der Photoeffekt, elektromagnetische Wellen und Abbildungsfehler behandelt. Im zweiten Teil werden die wesentlichen Bausteine optischer Sensorik vorgestellt, wie z. B. LED, Laser, Photodiode und Lichtwellenleiter. Im dritten Teil schließlich werden komplexe Systeme in ihrer Funktion und mit Anwendungsbeispielen beschrieben (u. a. Lichtschranken, Fasersensoren, Strömungsmesstechnik, Partikelmesstechnik, Teleskope). Errata: Unter OnlinePLUS finden Sie zwei Bildkorrekturen.

Free Download Optimization of Electric-Vehicle Charging: Scheduling and Planning Problems by Giulio Ferro , Riccardo Minciardi , Luca Parodi , Michela Robba
English | PDF EPUB (True) | 2024 | 185 Pages | ISBN : 3031619161 | 44 MB
This book provides models and methods for the optimal management of electrical vehicles through an interdisciplinary approach that brings together knowledge from the sectors of transportation, manufacturing and smart grids.

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Dl4All is download free for all software and educational resource. With a little searching, you can download what you need for free without spending any money.

Dl4All - Download free For All: software and educational resource.

Performance Analysis of a LiquidGel Rocket Engine During Operation

Pathways to Potential

Palimpsest A Novel

PCs & Laptops For Dummies

Overworld The Life and Times of a Reluctant Spy

Overcoming Urinary Incontinence A Woman's Guide to Treatment

Overcoming Metabolic Syndrome

Overcoming Infertility A Woman's Guide to Getting Pregnant

Optische Sensorik Lasertechnik, Experimente, Light Barriers

Optimization of Electric–Vehicle Charging Scheduling and Planning Problems