Materials Literature
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ケルセチン（quercetin）は代表的なフラボノイドのひとつで，有益なフィトケミカルとして食品では玉葱やワインに，また多数の漢方生薬に含まれている．臨床上，抗動脈硬化作用，脳血管疾患の予防，抗腫瘍効果を発揮することが知られている．ケルセチンは強い血管弛緩作用を表し，多様な作用機序が解明されているが，まだ不明な点も多く，現在議論の余地が残っている．我々はケルセチンの血管緊張調節作用を研究してきたが，ラット大動脈の実験から血管内皮依存性弛緩作用，血管平滑筋に対する複数の作用機序（Ca2＋チャネル阻害作用，Ca2＋依存性K＋チャネル活性作用，PK-C阻害作用等）を介して，血管弛緩作用を発揮していることを明らかにしてきた．また，ラット腸…
The method of carbothermal reaction is used to prepare titanium boride (TiB 2 ) in a DC electric arc furnance by using a powder mixture of TiO 2 , H 2 BO 3 and C. The initial product is milled and the impurities are removed by pickling and reverse flotation. The final TiB 2 powder with a purity of over 99% can be obta…
Thermally assisted flux flow (TAFF) and flux pinning energiesare studied in a Ba(Fe0.91Co0.09)2As2 (Tc = 25.3 K) sample via resistivity and AC susceptibility measurements in magnetic fields up to 18T. The flux pinning energy U(T,H) is determined from the Arrhenius law. The pinning maxima well determined by resistivity…
A nano energy converter consisting of vertically aligned piezoelectric ZnO nanowires and a temperature-responsive polymer, which can generate electric power while it is cooled down.
We present a mathematical model of solvated crystallisation of α-lactose monohydrate and discuss strategies to control the crystallisation process in semi-batch mode with the goal to privilege the production of small particles in the range between 130 µm and 330 µm. We compare specific and unspecific cost functions le…
Hybrid materials consisting of M(II)Pc (M = Fe, Co, Ni) particles dispersed in nylon 11 films have been prepared by using a thermal relaxation technique. The obtained films are characterized by AFM, SEM and TEM, and their structural composition is determined by IR spectroscopy and EDS. The M(II)Pc particles are homoge…
Gallium nitride (GaN) and indium-gallium nitride (InxGa1-xN) thin films were directly grown on several non-single-crystalline substrates such as quartz glass and amorphous-carbon-coated graphite. The films were grown by using a molecular beam epitaxy apparatus having single or dual nitrogen radio-frequency plasma cell…
Silene marmarica was studied as an environmentally friendly inhibitor for steel corrosion in 0.5 M H2SO4. The effect of iodide and chloride ions on the inhibition efficiency of Silene marmarica, were studied by using potentiodynamic polarization and electrochemical impedance spectroscopy techniques. The results showed…
An experiment on a PWR station blackout transient with the TMLB' scenario and accident management (AM) measures was conducted using the rig of safety assessment/large scale test facility (ROSA/LSTF) at Japan Atomic Energy Agency under an assumption of non-condensable gas inflow to the primary system from accumulator (…
Gold nanoparticles were prepared by citrate reduction of chloroauric acid. Different samples were prepared by varying the concentration of reducing agent. The surface plasmon resonance peak position depends on size and shape of metal nanoparticles. The dependence of the optical properties of spherical gold nanoparticl…
溶融混練でブレンドさせたポリ(L-乳酸)(PLLA)とポリ(D-乳酸)(PDLA)試料のガラス状態から昇温時および溶融状態からの降温時の結晶化(ガラス結晶化・メルト結晶化)でのモルフォロジーの変化を追跡した．ガラス結晶化では，PLLA(PDLA)の単体からなるHomo晶とステレオコンプレックス結晶(Sc晶)が観測された．昇温に伴い，長周期は約20 nmから約63 nmとなり，コンホメーションが変化していた．Homo晶の融解後は， Sc晶の間にHomo晶の融解物が存在するため広がった密度ゆらぎ(63 nm)と，Sc晶の長周期(23 nm)の二つの相関が観測された．ミクロンよりも小さい微結晶は粗い界面をもつクラスターを形成した．一方，…
Thin films of Magnesium Sulphide were deposited on a glass substrate at room temperature (300K) from aqueous solution of Magnesium Sulphate (MgSO 4 .7H 2 O), Ammonia (NH 3 ), Thiourea (NH 2 ) 2 CS in which Ethylene diamine tetra acetate (EDTA) as complexing agent. Distilled water was used to make up the solution to th…
The present study is a part of an investigation of the effect of ZnO supported for two mixed agent (4chlorophenoxy acetate (4CPA) as plant growth regulator and 2,4-dichlorophenoxyacetates (2,4D) as herbicide ) synthesis via the ionic exchange with zinc Oxide layered hydroxide(LH).The product of this process led to the…
A acidificação do solo tiomórficos tem como consequência a solubilização de compostos de Al, o que ocasiona o aumento da concentração de Al3+ na solução do solo. O objetivo, deste trabalho foi determinar os teores de Al trocável e ativo extraídos com 12 métodos analíticos em amostras de solos tiomórficos do Brasil e C…
This study investigated whether there was residual effect of application of lime- and clay-amended biosolids (LaBC®) on ryegrass growth and soil microbial biomass in a coarse-textured, acid pasture soil. Reapplied LaBC®increased fertiliser-use efficiency and plant growth in this glasshouse experiment. Soil management…
The realization of a perfect spin or valley filtering effect in two-dimensional graphene-like materials is one of the fundamental objectives in spintronics and valleytronics. For this purpose, we study spin- and valley-dependent transport in a silicene system with spatially alternative strains. It is found that due to…
A nanosilver composite plant medium with a good antimicrobial capability was successfully prepared via a two-step method in this work. First, nanosilver particles were prepared in a silver nitrate (AgNO3) solution by using D-glucose as a reduction reagent at room temperature. The effect of AgNO3 concentration levels o…
Ultrafiltrasi merupakan salah satu teknologi penjernihan yang dapat diterapkan untuk mengatasi rendahnya kualitas produk sari belimbing UKM Mulyasari. Tujuan dari penelitian ini ialah: 1) untuk menghasilkan rancangan mesin ultrafiltrasi yang praktis dan ekonomis; 2) untuk mengetahui performansi mesin ultrafiltrasi; 3)…
1-Furoyl-3,3-diphenylthiourea (FDFT) was synthesized, and characterized by FTIR, 1H and 13C NMR and ab initio X-ray powder structure analysis. FDFT crystallizes in the monoclinic space group P21 with a = 12.691(1), b = 6.026(2), c = 11.861(1) A, β = 117.95(2) and V = 801.5(3) A 3 . The crystal structure has been deter…
Axolotls show a remarkable regeneration capacity compared with higher vertebrates, regenerating missing appendages such as limbs and tail as well as other body parts (i.e., apex of the heart, forebrain, and jaw) after amputations which makes this animal a very interesting research model for tissue regeneration mechani…