Materials Literature
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A sensor system for investigating (bio)degradationprocesses of polymers is presented. The system utilizes semiconductor field-effect sensors and is capable of monitoring the degradation process in-situ and in real-time. The degradation of the polymer poly(d,l-lactic acid) is exemplarily monitored in solutions with dif…
A symmetry analysis of monoclinic, orthorhombic, and trigonal M3X2-type superstructures that can be formed in strongly stoichiometric MX y compounds with B1 structure is carried out. Channels of order-disorder transitions MX y → M3X2 are determined. It is shown that, as temperature decreases, two physically admissible…
The Teter, Payne, and Allan “preconditioning” function plays a significant role in planewave DFT calculations. This function is often called the TPA preconditioner. We present a detailed study of this “preconditioning” function. We develop a general formula that can readily generate a class of “preconditioning” functi…
According to all design codes (ASME, RCC-M, KTA, JARC, PNAEG,…) austenitic cladding on inner surface of RPVs is usually taken only as a protection against corrosion. Its tensile properties as well as its existence is not taken into account in design of the RPVs, i.e. in the determination of their dimensions as well as…
КРИОГЕННОЕ ВОДОРОДНОЕ ТОПЛИВО ДЛЯ УПРАВЛЯЕМОГО ИНЕРЦИАЛЬНОГО ТЕРМОЯДЕРНОГО СИНТЕЗА (ПОЛУЧЕНИЕ УСТОЙЧИВОГО УЛЬТРАДИСПЕРСНОГО СЛОЯ ИЗ ТВЁРДЫХ ИЗОТОПОВ ВОДОРОДА)И.В.Александрова 1 , Е
A modified sol-gel method was introduced by employing a cost effective novel template to synthesize coaxial one dimensional (1-D) composite nanostructures based on CoFe2O4 (CFO) - K0.5Na0.5NbO3 (KNN) and magnetic nanostructures based on CoFe2O4 (CFO). The studies with scanning electron microscopy (SEM) and atomic forc…
アスファルト舗装発生材の再生利用が開始されてから30年以上が経過している．現在供用中のアスファルト舗装の半数以上は過去に一度以上再生されたものであると考えられ，今後は，複数回繰り返し再生されたアスファルト舗装発生材が増加していくものと考えられる． そこで，一般的に使用されている再生用添加剤の中から飽和成分の多いものを選定し，試験室内で促進劣化と再生を繰り返し，アスファルト混合物およびアスファルトの性状がどのように変化していくのかを確認した．その結果，再生回数が増加すると再生混合物や再生アスファルトの物理的性状が低下する傾向が見られた．また，再生アスファルトの組成や酸化度，分子量分布において，酸化物などの蓄積と考えられる影響が見られ…
BACKGROUND: Kanglaite (KLT) can enhance the cytotoxic effects of chemotherapy; however, the underlying mechanism remains unclear. We investigated the mechanism underlying the cytotoxic synergy between KLT and pemetrexed in NSCLC cell lines. METHODS: A549 and H1975 cell lines were treated with pemetrexed and/or KLT in…
Due to that the spectra of CdSe/ZnS core/shell nanocrystals showed a wavelength shift when under external pressures, researches are conducted to design a wavelength shift-based strain or stress gauge. However, the spectrum's shift can only be subtly sensitive when the pressure applied to nanocrystals reaches GPa, whic…
Photonic crystals are periodic optical nanostructures that affect the motion of photons in much the same way that ionic lattices affect electrons in solids. Even though porous silicon (pSi) was first obtained as early as 1956, it was long used only as electrical insulator. Unique optical and photophysical properties o…
The fatigue limit of materials is usually difficult to estimate, and requires an expensive experimental campaign to test every sample under a large number of cycles in order to determine the asymptote of the S-N curve. An experimental study is here reported with the purpose to show an efficient and fast way to estimat…
The so called Voronkov criterion defines a critical value Γ crit of the ratio $$\varGamma = v/G$$ of the pulling rate v over the thermal gradient G at the crystal-melt/interface of a growing crystal. For Γ > Γ crit, the crystal is vacancy-rich and can contain large vacancy clusters that are detrimental for gate oxide…
Graphene oxide (GO) nanosheets possess several advantages, such as a large surface, outstanding biocompatibility, and straightforward chemical modification capability. They also have great potential as a drug-carrier. In this article, we radiolabeled GO nanosheets with Tc-99m, which satisfies the potential needs of mi…
Dissipative action, the product of dissipation energy and transport time, is fundamental to the dynamic failure of solids. Invariance of the dissipative action underlies the fourth-power nature of structured shock waves observed in selected solid metals and compounds. Dynamic failure through shock compaction, tensile…
OBJECTIVE: To investigate the chemical constituents from Gynanchum paniculatum. METHODS: The constituents were isolated and purified by silica gel, Sephadex LH-20 column chromatography, and preparative TLC. Their structures were identified on the basis of spectral data and physiochemical characteristics. RESULTS: 15 c…
Hydrogels are soft solids that consist mainly of water. Low molecular weight gelators are small molecules that self-assemble in solution to form long fibres. These fibres can entangle and cross link, forming a network and trapping the solution to form a self-supporting gel matrix. Gels formed using low molecular weigh…
Preface Bacterial Poly(3-Hydroxybutyrate) as a Biodegradable Polymer for Biomedicine; A. L. Iordanskii, G. A. Bonartseva, T. A. Makhina, E. D. Sklyanchuk, and G. E. Zaikov The Effect of Antioxidant Drug Mexidol on Bioenergetic Processes and Nitric Oxide Formation in the Animal Tissues; Z. V. Kuropteva, O. L. Belaya, L…
アミノカルボン酸型キレート樹脂における錯形成能，吸脱着速度及び元素選択性の改善を目指し，各設計因子の捕捉特性への影響を精査した．基材樹脂の親水化及びスペーサを介して配位子の導入により，配位子本来の錯安定度定数の序列と一致した捕捉特性が得られた．この知見を基に，カルボキシメチル化ポリエチレンイミンを配位子とするキレート樹脂を開発した．多座配位が可能な官能基構造の採用により捕捉可能pH範囲を拡大すると共に，アルカリ土類金属元素を捕捉しないという特徴的な捕捉機能を達成した．このキレート樹脂を環境水や尿中の金属元素の固相抽出に適用したところ，アルカリ金属元素及びアルカリ土類金属元素の妨害を受けずに対象金属元素を効率良く抽出可能であった．ま…
Chemomechanical gels can translate chemical recognition into macroscopic motions, if the gels contain suitable reaction centers. These most often respond by non-covalent interactions, but fast covalent reactions can serve the same purpose. The unique feature of chemomechanical gels is that they can act as sensor and a…
Based on the method of life cycle assessment( LCA),it was studies the greenhouse gas emissions of 5 kinds nitrogen fertilizer Ammonium nitrate, Diammonium phosphate, Compound fertilizer, Urea, Ammonium bicarbonate with different nitrogen content. It was studied to determine the basic theory and data of carbon footprin…