Materials Literature
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Organic chemistry was originally considered to be the chemistry of living things; organic chemicals came from plants and animals, while inorganic ones came from rocks. However, the discovery of the conversion of ammonium isocyanate, on heating, into urea (Figure 1.1) rst connected the whole of chemistry together. e s…
Ferroelectrics are important materials due to their extensive technological applications, such as non-volatile memories, field-effect transistors, ferroelectric tunneling junctions, dielectric capacitors, piezoelectric transducers, sensors and actuators. As is well known, the outstanding dielectric, piezoelectric, and…
Electrospinning allows the production of nanofibers with diameters down to the range of a few nanometers. Self‐assembly processes driven by the coulomb interactions between charged elements of the fluids to be spun and their interactions with the external electrical field control nanofiber formation. Electrospinning i…
Представлены результаты эмпирического исследования зависимости между уровнем дисфункциональных убеждений и уровнем, типологией перфекционизма. В качестве испытуемых выступили студенты медицинской академии (N = 162). Были использованы следующие методики: опросник перфекционизма Холмогоровой–Гаранян, шкала депрессии Бек…
Polyolefin is a group of polymers produced from chemically unsaturated CnH2n as a monomer. Two of the simplest members are polyethylene (PE) and polypropylene (PP). PE is a readily crystallized thermoplastic. It is available commercially in three major grades: low, high, and ultrahigh (ultrahigh-molecular-weight polye…
Significance and Use 5.1 This test method provides a means to measure a variety of fire-test-response characteristics associated with heat and smoke release and resulting from burning the materials insulating electrical or optical fiber cables, when made
For all the diversity of SHS systems, presented in the first chapter, there are common fundamental principles of materials synthesis in the combustion mode. Consideration of these principles is the focus of this chapter. The literature on combustion synthesis of materials regularly uses terms such as stationary, equil…
International audience
Sakly, Laura Serkovick, and Joris Kadok for all the insightful conversations and helpful tips about living in France!A very special thanks to Emilie Gaudry for the theoretical DFT contribution to my thesis, and to Marie-Cécile de Weerd for growing our InPd polycrystal sample (and giving me a good introduction to XRD a…
腫瘍の早期診断は，治療効果の向上や生命予後の点で重要である．我々は，近年発展のめざましい自己組織化ナノ粒子技術，および病巣への標的化技術の発展を利用し，これまでに非常に長い血中半減期を有するポリイオンコンプレックス型中空ナノ粒子PICsome を応用し，蛍光イメージングによって，腫瘍への高い集積性を確認し報告した1),2)．本研究では，MRI を用いた微小腫瘍の検出を目指し，高いMR 造影能を有する超常磁性酸化鉄微粒子（Super-aramagnetic Iron Oxide, SPIO)3)を，蛍光色素（Cy5）で標識したPICsome に内包した新規造影剤SPIO-Cy5-PICsome を開発し，その造影能，腫瘍への集積性の…
Anticorrosion properties of carboxylated antifreeze are investigated. It is found that long-time contact between coolant liquid and steel changes neither surface condition of specimens nor mass of them. It is demonstrated that steel surface under electrochemical corrosion conditions can in some cases take on the prope…
Discoveries do not arise out of nothing. Each new theory or experimental result has its own background and recognizing the achievements of predecessors is a sign of scientific professionalism. On the other hand, discoveries do not take place ‘according to plan’. They are always unexpected. For example, Christopher Col…
以马来酸化蓖麻油(MACO)为主要原料,利用无机矿物碳酸钙(CaCO3)粒子作为增强材料制备了环境友好的CaCO3/MACO复合材料及其泡沫塑料,研究了CaCO3对MACO力学性能、动态力学性能和热稳定性的影响,分析了无机粒子与基体间的界面相互作用.研究结果表明:CaCO3含量及其与MACO基体聚合物间的界面黏结是影响复合材料强度的关键因素.随CaCO3含量增加,CaCO3/MACO复合材料的刚性增加,当CaCO3添加量为60wt%时,复合材料的拉伸和弯曲强度达到最优,分别为26.7 MPa 和46.2 MPa,基本达到部分通用塑料的水平.动态力学和热稳定性分析证明:CaCO3作为增强填料可有效提高蓖麻油基塑料的储存模量、玻璃化转…
Dental biomaterials for restorative dentistry involve all the different types of materials described in Chapter 1: Metallic, ceramic, polymeric, and composite materials, specifically including the following [1]: • Amalgam alloys for direct fillings • Noble metals and alloys for direct fillings, crowns, bridges, and po…
The disposal of waste/hazardous substances is an important issue concerning toxic substances, such as spent fuel (SF), high level waste (HLW) or carbon dioxide (CO{sub 2}). Radioactive waste disposal considers the long term emplacement of radioactive material until its activity and (radio)toxicity decreases below acce…
The use of metallic materials for medical implants can be traced back to the nineteenth century, leading up to the era when the metal industry began to expand during the Industrial Revolution. The development of metallic implants was primarily driven by the demands for new approaches to bone repair, typically internal…
This paper analyzes the influence of impact parameters on the process of super-deep penetration of particles. The parametrical principle which reveals the possibility of super-deep penetration of particles is defined. The role of a shock wave of the detonation products as the factor of preliminary strain of crystallin…
Objective To explore the function of mast cells in proliferation and involution of infantile hemangioma. Methods Paraffin-embedded sections of 22 proliferating, 20 involuting and 23 involuted IH lesions were used to investigate the expression of tryptase, VEGF-A and GLUT-1 by immunostaining. The nuclei of all cells we…
Objective To explore the effects of Prunella vulgaris L （PVL） on the growth of hemangioma. Methods Infant proliferative hemangioma blocks were implanted subcutaneously into nude mice hemangioma modeling. At 30 days post-implantation, among 65 survivors, 5 nude mice were randomly sacrificed for measuring the volume of…
The immune and lymphatic systems are two closely related organ systems that share several organs and physiological functions (Figure 19.1). The immune system is the defense system against infectious organisms (such as bacteria and viruses) and foreign materials. Through a series of molecular binding and signaling even…