Materials Literature
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Large area triangular gold nanoparticle thin films were fabricated by creating a thermal stress at glass substrate-gold interface. Broadband/Fluorescence Fourier plane imaging of these films showed enhanced scattering (confirmed by spectra) and good refractive index sensitivity.
Исследована активность катализаторов Co/ZnO и Rh/Al2O3 в процессе паровой конверсии этанола в традиционном трубчатом реакторе с закрепленным слоем катализатора и в микроканальном реакторе. При температурах 600 и 700°C катализатор Rh/Al2O3 существенно активнее и стабильнее, чем Co/ZnO. Сравнение реакторов двух типов по…
本文通过溶胶–凝胶法制备氮硫钒共掺杂的具有较高可见光催化活性的二氧化钛。并用均匀实验、二次多项式逐步回归分析和规划求解来使制备过程中氮、硫和钒的掺杂比例最优化。氮硫钒共掺杂可以使二氧化钛的带隙缩小至2.65~2.93 eV。在可见光(λ ≥ 400 nm)下照射3 h后，优化后的共掺杂二氧化钛催化剂对活性蓝的降解率最高可达90.40%。 Nitrogen, sulfur and vanadium co-doped TiO2 photocatalysis with high visible light activities were synthesized through sol-gel process. Uniform desig…
Приводятся результаты импедансной спектроскопии (1 Гц32 МГц) и широкополосной диэлектрической спектроскопии (30 ГГц150 ТГц) кристаллов на основе диоксида циркония, легированного 1.530 мол. % Y2O3 или 10 мол. % Sc2O3 и 1 мол. % Y2O3. В интервале рабочих температур твердооксидных топливных элементов подтвержден макси…
Two-dimensional (2D) polymers are very attractive because they are promising for ideal molecular-sieving membranes (MSM) for separating small gas molecules completely such as H2, O2, N2, and CO2 which have not been realized. However, 2D polymers have a lot of questions and problems which should be answered and solved.…
This study investigated CO2 emission and amount of wastes from the renovation project which reused building frames, by process analysis, and then compared the environmental impacts of the renovation project with that of new construction project.In the scope of this investigation, CO2 emission from the renovation proje…
采用单辊快淬法制备3种Fe80-xCoxZr8Mo2B9Cu1(x=10、20、30)非晶合金,并对3种合金进行不同温度热处理,研究Co含量对该系列合金热稳定性和微观组织的影响。利用差热分析仪(DTA),X射线衍射仪(XRD)和透射电镜(TEM)等仪器测量样品的热性能和微观组织。研究结果表明,高Co含量合金的热稳定性较差。3种合金的晶化过程相似,晶化过程初期仅析出α-Fe(Co)晶粒。Co含量的增加增大了合金的平均晶粒尺寸。
Приведен аннотированный список хирономид из малых водохранилищ бассейнов рек Камы, Урала и Оби на территории Республики Башкортостан. Список включает 54 валидных вида и дополнен данными по количественному развитию личинок в исследованных водоемах. Всего зарегистрировано 60 видов из 31 рода и 3 подсемейств: Tanypodinae…
制备了一种新的稀土配合物Eu(TTA)2(AA)(DPMP)发光材料(TTA=α-噻吩三氟甲酰丙酮,AA=丙烯酸,DPMP=二吡啶并[3,2-a:2,3-c]-8-甲基吩嗪);并利用元素分析和红外光谱分析了配合物的组成与结构。在常温下研究了配合物的荧光性质,结果表明配合物有较好的荧光性质。
Journal of Anthropology and Archaeology is a peer-reviewed international journal, which publishes original papers promoting theoretical, methodological and empirical developments in the discipline of socio-cultural anthropology.
After reviewing the history and mechanism of Whipple bumper shield to protect spacecrafts from the hypervelocity impact by micrometeoroids and orbital space debris, this paper proposes and demonstrates the methodology on the determination of ballistic limit curve of Whipple shield only by numerical analyses by using a…
Изучено химическое равновесие в системе Fe(II)Mo(VI) в широком интервале значений рН растворов с учетом реакций комплексообразования, окисления-восстановления и осаждения. Доказано, что по причине относительно малого значения константы равновесия окислительно-восстановительной реакции возможно квазиравновесное сущест…
以过硫酸钾（KPS）为引发剂,N,N＇-亚甲基双丙烯酰胺（NMBA）为交联剂,丙烯酸（AA）、丙烯酰胺（AM）和绢云母为原料,采用快速水溶液聚合法,在没有氮气保护的条件下制备有机-无机复合高吸水树脂。采用傅里叶红外光谱（FT-IR）、扫描电镜（SEM）对复合高吸水树脂结构进行了表征。考察了单体配比、绢云母用量、丙烯酸中和度、交联剂用量、引发剂用量对高吸水树脂吸液性能的影响。得到了最佳聚合反应条件：丙烯酰胺与丙烯酸的质量比为1∶5,交联剂用量为0.014%,引发剂用量为0.2%,绢云母用量为5%,丙烯酸中和度为80%,反应温度为65℃。在此条件下制备的复合高吸水树脂的蒸馏水吸收倍率为790g/g,0.9%的NaCl水溶液的吸收倍率为…
Low-dimensional materials such as graphene or carbon nanotube show remarkable promise for next generation electronics (transistors), structural materials (composites), energy (thermoelectrics, solar cells), and biology (biosensors, drug delivery). However, owing to nanoscale dimension they are very susceptible to unde…
Solid coordination frameworks (SCF) are crystalline materials based on connections between metal ions through organic ligands. In this sense, combination of polycarboxylate anions and dipyridyl ligands is an effective strategy to produce extended structures. In this context, this work is focused on two novel Cu II -ba…
The coefficients of friction of uncoated high-strength steel sheets and galvannealed high-strength steel sheets were investigated by sliding tests at elevated temperatures using uncoated tools and TD-coated tools with a VC layer on their surface. The temperatures in the tests ranged from room temperature to 700°C. The…
The growth of single-walled carbon nanotubes (SWCNTs) by hot-filament chemical vapor deposition using Co as a catalyst and Co silicide as a catalyst support was investigated at 450°C. Ethanol vapor was used as the carbon source. The density of grown nanotubes was much higher for the sample formed using Co silicide as…
Abstract：Transverse cracks are great menace to casing safety due to their high probability to cause fracture.Transverse crack detection in casing through tubing with transverse probe using pulsed eddy current method is studied by finite element simulations and experiments.Distributions and variations of the eddy curre…
沸騰水型原子力発電システム用の再結合触媒を環状シロキサン（D類）被毒から保護するために，再結合触媒の上流に設置する規則メソ多孔体（Zr-SBA15およびTi-SBA15）を担持したハニカム触媒のD5加水分解性能におよぼす諸因子の影響を評価した．D5加水分解反応の除去率は，滞留時間に大きく依存し，反応温度，触媒担持量（50–150 g/L）の影響はほとんどなかった．線速度2.9 m/s，ハニカム高さ120 mmでは423–523 Kの温度領域でD5除去率は0.95という高い値を示した．本反応系でのD5除去率は1次反応式と頻度因子を線速度の関数としたアレニウスプロットから予測可能である．DSS連続試験での性能低下はTi-SBA15はZ…
Behavior and Physical Properties In This work taking nylon rope experimental test were performed in ASTM D3045 standard for breaking strength. firstly in this project the nylon rope samples are keep in heat aging oven at 70 0 c temperature for 0, 1,3,6,12,23 weeks. after the completion, test the material in universal…