This book provides a concise treatise on the use of surfactants in enhanced oil recovery (EOR), including information on key types of surfactants and their respective applications in the wider petroleum industry. The authors discuss carbon dioxide EOR, alkaline-surfactant-polymer flooding strategies, and the use of surfactants as a means of reducing interfacial tension, while also paying special attention to the challenges involved in using surfactants for enhanced oil recovery, such as the difficult issue of surfactant adsorption on reservoir rock. All chapters highlight and are based on the authors’ own laboratory-scale case studies. Given its content, the book offers a valuable asset for graduate students of petroleum and chemical engineering, as well as researchers in the field of chemical enhanced oil recovery. It will also be of interest to professionals involved in enhanced industrial oil recovery.
Due to their high nutritive value and the presence of secondary metabolites, wetland plants can be consumed by humans as food and utilized as medicinal drugs. Significant numbers of ethno-botanic resources have been reported to extract useful compounds, which can be used as pharmaceuticals. Wetland plants are also very valuable as an energy source, as fuel for fish smoking and for domestic energy. These plants can be harvested as wild stock, or cultivated in flooded paddies for aquaculture, food and for livestock fodder. All parts of plants can be utilized for foodstuff, compost, mulch, medicine, and for construction. Wetland Plants: A Source of Nutrition and Ethnomedicine aims to promote public understanding of this remarkable resource, exploring not only their role in the ecosystem but also their nutritional and medicinal purposes. Based on original research, the text focuses on species identification (with original pictures of wetland plants including morphological features), nutritive value and ethno-medicinal uses. This book serves as an important and basic reference material for further research into the basic biological as well as the applied medicinal aspects of traditional medicinal wetland plants.
The analysis of QoE is not an easy task, especially for multimedia services, because all the factors (technical and non-technical) that directly or indirectly influence the user-perceived quality have to be considered. This book describes different methods to investigate users’ QoE from the viewpoint of technical and non-technical parameters using multimedia services. It discusses the subjective methods for both controlled and uncontrolled environments. Collected datasets are used to analyze users’ profiles, which sheds light on key factors to help network service providers understand end-users’ behavior and expectations. Important adaptive video streaming technologies are discussed that run on unmanaged networks to achieve certain QoS features. The authors present a scheduling method to allocate resources to the end-user based on users’ QoE and optimizes the power efficiency of users’ device for LTE-A. Lastly, two key aspects of 5G networks are presented: QoE using multimedia services (VoIP and video), and power-saving model for mobile device and virtual base station. Features two proven methods to collect datasets for assessing the user's QoE Investigates client-based HTTP rate adaptive video streaming algorithms over TCP protocol to regulate the user's QoE Discusses VoIP service and focuses on a QoE driven downlink scheduling method for LTE-A technology Introduces the concept of 'quality of experience' presenting all parameters which directly or indirectly influence the user’s satisfaction within two well-used Internet services, multimedia OTT streaming and Voice over IP
The Himalayan region is among the largest mountains systems of the world with uncounted unique medicinal plants resources. The lesser Himalayas ranges are the extension of Greater Himalayas. They have unique ecology, vegetation and diversity of medicinal flora due to tremendous variation in the altitude, climate and associated wildlife. The utilization of medicinal plants in medicine suffers from the fact that although plants are used to treat diseases, scientific evidence is lacking in many cases. Different societies of the world use the plants according to their own beliefs and knowledge and previous experiences. Their knowledge about the use of the plants is usually not known to the other world or science. This book provides a brief introduction of Lesser Himalayas, ethnobotanical aspects, marketing and anthropogenic pressure on medicinal flora. It comprises one hundred medicinal plant species including Pteridophytes, Gymnosperms and Angiosperms (Monocots and Dicots) along with their scientific description and traditional uses.
Medicinal flora plays an important role in health care systems across the world. Out of the half million flowering plants, around 50.000 species are valued for their therapeutic properties. During the last few decades, 20% of the world’s population used plants and/or their derived products as a source of medicine. WHO stated that 80% population around the globe, specifically the rural communities, depend on medicinal plants for their basic healthcare needs. To this end, plant-based phytochemicals are known to have hepato-protective, anti-carcinogenic, anti-allergic, anti-inflammatory, antimicrobial, antioxidant actions. This book is a guide to ~280 plant species of medicinal flora that demonstrates global relevance. Our goal is to share local knowledge about phytomedicines to a worldwide audience. It is an illustrated reference that documents and preserves the existing knowledge on these plant taxa, with a social and cultural (ethnobotanical) emphasis. This book also provides comprehensive and useful information about traditional uses of medicinal plants by the local communities for the treatment of various prevalent diseases. It contains comprehensive descriptions of each species including family, synonyms, English name, distribution, altitude, habitat, morphological description, life form, part used, mode of utilization, diseases category, recipes, other medicinal uses, phytochemical activity and toxicity.
Salinity is one of the acute problems causing enormous yield loss in many regions of the world. This phenomenon is particularly pronounced in arid and semiarid regions. Halophytes can remove salt from various types of problematic soils due to their unique morphological, physiological and anatomical adaptations to these environments. Halophytes are also used for the treatment of certain diseases but scientific documentation in terms of current phytotherapic applications is deficient in this unique group of plants. Different ethnic groups around the world use medicinal halophytes according to their own beliefs and ancestor’s experiences. However, their knowledge about the use of salt tolerant medicinal plants is usually confined to their own community. There is thus a knowledge gap on halophytes which should be bridged and preserved. This book provides a comprehensive account on the distribution of halophytes, their ethnobotanical and medicinal aspects, economic importance, and chemical constituents along with scientific description. The book therefore serves as a valuable resource for professionals and researchers working in the fields of plant stress biology and ethnobotanical aspects.
The history taking and communication skill stations are amongst the most difficult postgraduate examinations, where candidates more commonly fail due to an inability to communicate properly with the patient, rather than due to lack of knowledge. Authored by experienced postgraduate examiners, this book offers students a wealth of real-life scenarios in multi-conversational styles, using a seven-step approach to help them understand the questions and provide clear and succinct answers. The scenarios are similar to those most frequently encountered in examinations and the model answers are in a typical style expected between doctor and patient, also taking into account candidates for whom English may not be their first language. The comprehensive text is enhanced by illustrations and figures to assist learning and will be useful not only to candidates preparing for postgraduate clinical examinations, but also to undergraduate students. Key points Provides real-life, conversational-style scenarios between doctor and patient to help students prepare for postgraduate history taking and communication skill examinations Uses a seven-step approach to help postgraduates understand questions and provide clear and succinct answers Scenarios typical of those used in examinations Authored by experienced postgraduate examiners
This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
In the Name of Allah and Muhammad. As Salaam-Alaikum. The Honorable Elijah Muhammad taught us that, The Holy Qur'an refers to it (Mecca) and the Bible refers to it, but these are signs of the coming of a nation that was hidden and lost, which God himself would go after in the last days. After finding that nation, choose that nation for Himself and take it and use it as a builder would in selecting stones or a foundation for a substantial building that he, intends to build. Also, He said, The sun is going down in the West. This teaching will raise a powerful sun of truth and the spirit of truth from this part of our planet by us whom God has raised up among us, no more will you look toward the East after this for a light of truth which the scientist of the East was not able to give you, it will come from the West. That will change the disposition of worship, you won't look to the West nor to the East nor North and South for the wisdom everywhere you go you will find it. -The Honorable Elijah Muhammad
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