85 research outputs found

    Natural Fiber Based Composites

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    Entitled “Natural Fiber-Based Composites”, this Special Issue has the objective to give an inventory of the latest research in the area of composites reinforced with natural fibers. Fibers of renewable origin have many advantages. They are abundant and cheap, they have a reduced impact on the environment, and they are also independent from fossil resources. Their ability to mechanically reinforce thermoplastic matrices is well known, as their natural heat insulation ability. In the last twenty years, the use of cellulosic and lignocellulosic agricultural by-products for composite applications has been of great interest, especially for reinforcing matrices. The matrices can themselves be of renewable origin (e.g., proteins, starch, polylactic acid, polyhydroxyalkanoates, polyamides, etc.), thus contributing to the development of 100% bio-based composites with a controlled end of life. This Special Issue’s objective is to give an inventory of the latest research in this area of composites reinforced with natural fibers, focusing in particular on the preparation and molding processes of such materials (e.g., extrusion, injection-molding, hot pressing, etc.) and their characterization. It contains one review and nineteen research reports authored by researchers from four continents and sixteen countries, namely, Brazil, China, France, Italy, Japan, Malaysia, Mexico, Pakistan, Poland, Qatar, Serbia, Slovenia, Spain, Sweden, Tunisia, and Vietnam. It provides an update on current research in the field of natural fiber based composite materials. All these contributions will be a source of inspiration for the development of new composites, especially for producers of natural fibers, polymer matrices of renewable origin and composite materials. Generally speaking, these new materials are environmentally friendly and will undoubtedly find numerous applications in the years to come in many sectors. Dr. Philippe Evon Guest Edito

    Environmental Technologies to Treat Rare Earth Element Pollution

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    Rare earth elements (REE) have applications in various modern technologies, e.g., semiconductors, mobile phones, magnets. They are categorized as critical raw materials due to their strategic importance in economies and high risks associated with their supply chain. Therefore, more sustainable practices for efficient extraction and recovery of REE from secondary sources are being developed. This book, Environmental Technologies to Treat Rare Earth Elements Pollution: Principles and Engineering: presents the fundamentals of the (bio)geochemical cycles of rare earth elements and which imbalances in these cycles result in pollution. overviews physical, chemical and biological technologies for successful treatment of water, air, soils and sediments contaminated with different rare earth elements. explores the recovery of value-added products from waste streams laden with rare earth elements, including nanoparticles and quantum dots. This book is suited for teaching and research purposes as well as professional reference for those working on rare earth elements. In addition, the information provided in this book is helpful to scientists, researchers and practitioners in related fields, such as those working on metal/metalloid microbe interaction and sustainable green approaches for resource recovery from wastes

    Polymers Enhancing Bioavailability in Drug Delivery

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    This Special Issue provides an update on the state of the art and current trends in polymeric drug-delivery systems specifically designed for improving drug bioavailability. The multiple contributions received further strengthen the role of polymers in modern drug delivery and targeting, illustrating the different approaches possible and unveiling what the future may bring

    Proceedings of the Eighth Italian Conference on Computational Linguistics CliC-it 2021

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    The eighth edition of the Italian Conference on Computational Linguistics (CLiC-it 2021) was held at Università degli Studi di Milano-Bicocca from 26th to 28th January 2022. After the edition of 2020, which was held in fully virtual mode due to the health emergency related to Covid-19, CLiC-it 2021 represented the first moment for the Italian research community of Computational Linguistics to meet in person after more than one year of full/partial lockdown

    Essential Oils

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    Over the years, natural products such as essential oils have been gaining more and more prominence due to their perceived health benefits. Plants rich in essential oils represent a viable source of biomolecules for use in the most varied human activities, such as agricultural, cosmetic, and pharmaceutical applications. Essential oils are natural volatile fractions extracted from aromatic plants that are formed by classes of substances such as fatty acid esters, mono and sesquiterpenes, phenylpropanoids, and aldehyde alcohols, and in some cases, aliphatic hydrocarbons, among others. In this context, this book includes twelve chapters that present new information on the extraction and application of essential oils in various industrial segments. It is divided into three sections that discuss the general concepts of essential oils and techniques for their extraction, topics in food science and technology, and essential oils and their pharmacological properties in various activities and applications

    Faktor Pengaruh Bahasa Inggeris dalam Pembelajaran Bahasa Mandarin Sebagai Bahasa Asing Nur Farrah Atiqah Amran & Muhammad Nazirul Mohd Noor

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    Salah satu nilai tambah yang amat diperlukan pada masa kini ialah penguasaan bahasa asing. Pelan Pembangunan Pendidikan Malaysia 2013-2015 telah mengetengahkan pembelajaran bahasa ketiga. Menurut Teori Bahasa Halliday, kanak-kanak menjadi mahir dalam bahasa kerana mereka perlu berinteraksi dengan orang di persekitaran mereka. Ini bermakna untuk memenuhi keperluan asas mereka, kanak-kanak itu perlu berinteraksi dengan orang ramai pada peringkat awal. Fenomena ini tidak berlaku dalam sampel. Oleh itu, pelajar Melayu yang hanya berbahasa Melayu dan Inggeris tidak akan mempelajari bahasa Mandarin dengan baik. Kajian awal ini bertujuan untuk menganalisis faktor-faktor yang menyumbang kepada pengaruh bahasa Inggeris dalam kalangan pelajar Melayu semasa mempelajari bahasa Mandarin. Sampel kajian melibatkan 10 orang pelajar Melayu di sebuah universiti awam. Instrumen yang digunakan dalam kajian ini ialah soal selidik. Dapatan kajian ini diharapkan dapat membantu ahli akademik dalam melahirkan graduan yang berkualiti tinggi dengan kebolehan bertutur dalam bahasa ketiga dengan fasih. Selain itu, ia juga akan meningkatkan reputasi universiti dengan pencapaian pelajar yang cemerlang, sekali gus memberi manfaat kepada pembangunan negara khususnya dalam hubungan antarabangsa

    Physicochemical, Sensory and Nutritional Properties of Foods Affected by Processing and Storage

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    Processing and storage can cause changes and interactions in food components that have effects on nutritional value, organoleptic characteristics or even food safety. This book includes 19 research works showing important and interesting advances, as well as new approaches, in this research topic. Four articles are dedicated to studying the effect of canning conditions (filling media and some ingredients) on the diverse parameters of quality for fish and pet foods. Three articles are devoted to studying the effects of dehydration (pre-treatments and drying procedures). One article is dedicated to monitoring the elaboration of a fermented and dehydrated product (sausage) using a portable NIRS device. The ninth article of this book studies the effect of low-dose electron beam irradiation on cooking quality, moisture migration, and thermodynamics, as well as the digestion properties of the isolated starches in newly harvested and dried rice. The next contribution studies the use of different preservatives to avoid the formation of undesirable volatile organic compounds in stracciatella cheese. Another article examines the impact of source material, kibble size, temperature, and duration on the efficiency of the aqueous extraction of sugars and phenolics from carob kibbles by conventional heat-assisted (HAE) and ultrasound-assisted (UAE) methods. In two articles, marinating with different extracts, alone or combined with other seasoning/conditioning methods, was essayed to tenderize beef or to improve the sensory quality of chicken leg and breast meat. The effect of various cooking methods on the quality, structure, pasting, water distribution and protein oxidation of fish and meat-based snacks is studied in the fourteenth article. The last five articles are dedicated to the study of the effects of storage on several foods (olive oil, blueberry, beetroot and Atlantic mackerel)

    Natural Antioxidants: Innovative Extraction and Application in Foods

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    Natural Antioxidants: Innovative Extraction and Application in Foods compiles comprehensive information and recent findings on the extraction of antioxidants from different natural resources and investigates their application in food. The book focuses on different sources of natural antioxidants such as the Hypochaeris and Hyoseris species, pomegranate seed oil, thyme, hemp, coriander, olive mill wastewaters, the edible mushroom Hericium erinaceus, Brewer’s spent grain, broccoli byproducts, cardoon, and Norway spruce bark. Moreover, the effect of different treatments such as blanching, microwave exposure, roasting, and enzymatic browning on the phytochemical content and bioactivity of the extracts is also addressed. Readers will find valuable insights into the impact of extraction methodologies on the bioactivity of the extracts, along with an understanding of the vast potential of natural extracts for the quality of food products. Readership Food and nutrition researchers, health professionals, nutritionists, and food science and chemistry student

    Faktor Pengaruh Bahasa Inggeris dalam Pembelajaran Bahasa Mandarin Sebagai Bahasa Asing

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    Salah satu nilai tambah yang amat diperlukan pada masa kini ialah penguasaan bahasa asing. Pelan Pembangunan Pendidikan Malaysia 2013-2015 telah mengetengahkan pembelajaran bahasa ketiga. Menurut Teori Bahasa Halliday, kanak-kanak menjadi mahir dalam bahasa kerana mereka perlu berinteraksi dengan orang di persekitaran mereka. Ini bermakna untuk memenuhi keperluan asas mereka, kanak-kanak itu perlu berinteraksi dengan orang ramai pada peringkat awal. Fenomena ini tidak berlaku dalam sampel. Oleh itu, pelajar Melayu yang hanya berbahasa Melayu dan Inggeris tidak akan mempelajari bahasa Mandarin dengan baik. Kajian awal ini bertujuan untuk menganalisis faktor-faktor yang menyumbang kepada pengaruh bahasa Inggeris dalam kalangan pelajar Melayu semasa mempelajari bahasa Mandarin. Sampel kajian melibatkan 10 orang pelajar Melayu di sebuah universiti awam. Instrumen yang digunakan dalam kajian ini ialah soal selidik. Dapatan kajian ini diharapkan dapat membantu ahli akademik dalam melahirkan graduan yang berkualiti tinggi dengan kebolehan bertutur dalam bahasa ketiga dengan fasih. Selain itu, ia juga akan meningkatkan reputasi universiti dengan pencapaian pelajar yang cemerlang, sekali gus memberi manfaat kepada pembangunan negara khususnya dalam hubungan antarabangsa
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