以用户福祉为中心的社区模块化健身娱乐设施设计研究

目的 以提高社会福祉为主要目的,提升社区居民文化生活的幸福感和归属感。方法 按居住面积和人口区分社区类型,通过实地观察、问卷调查和用户访谈等方法洞察居民主要需求点,创新性提出“以用户福祉为中心的设计(HWCD)”理念,将用户福祉相关需求模块化,并应用于社区健身娱乐设施的改良设计。结论 基于HWCD理念的社区健身娱乐设施完善,提升了居民尤其是老人及儿童等人群的体验度和满意度,呼应了我国新时代背景下社区福祉高质量发展的建设目标。     

海洋工程装备建造设备发展浅探

海洋工程装备向大型化、深水化发展,性能要求不断提高。海洋装备的建造面临着制造难度提升、环境更为复杂、关键设备精度要求高等难题,对创新加工装备、加工模式等提出了更高要求。制造设备需要在精细化、柔性化、加工与测量相结合等方面提升加工能力,同时在加工设备成套组织、加工控制软件等领域取得突破,从而为海洋工程装备产业的发展提供建造能力的支持,实现制造过程的精细化、智能化和绿色化发展。     

1-氨基-3-十二烷基-1，2，3-三唑硝酸盐的合成研究

以乙二醛、水合肼及溴代十二烷为原料,经加成-消除、环化、烷基化、复分解4步反应得到1-氨基-3-十二烷基-1,2,3-三唑硝酸盐。通过核磁、红外、质谱等分析手段对目标产物进行了结构表征。探索并优化了加成-消除、环化和烷基化反应条件。各步反应的最佳条件为：加成-消除反应中,n（水合肼）n（乙二醛）n（甲醇）＝319,70℃反应5 h,收率为90．3％;环化反应中,m（二氧化锰）m（乙二腙）＝21,20℃反应3h,收率为88．2％;烷基化反应中,n（1-氨基-1,2,3-三唑）n（溴代十二烷）＝11．5,80℃反应40h,收率为64．5％;复分解反应易进行且得率高,反应3．5h,产率为80．4％,目标产物总收率为41．3％。     

Synthesis of Highly Stable 1,3-Diaryl-1H-1,2,3-triazol-5-ylidenes and their Applications in Ruthenium-Catalyzed Olefin Metathesis

The formal cycloaddition between 1,3-diaza-2-azoniaallene salts and alkynes or alkyne equivalents provides an efficient synthesis of 1,3-diaryl-1H-1,2,3-triazolium salts, the direct precursors of 1,2,3-triazol-5-ylidenes. These N,N-diarylated mesoionic carbenes (MICs) exhibit enhanced stability in comparison to their alkylated counterparts. Experimental and computational results confirm that these MICs act as strongly electron-donating ligands. Their increased stability allows for the preparation of ruthenium olefin metathesis catalysts that are efficient in both ring-opening and ring-closing reactions.     

苯骈三氮唑对锌的缓蚀行为

通过测试锌电极在不同浓度的苯骈三氮唑（BTA）溶解中的极化曲线，滴汞电极的微分电容曲线，考察了BTA对金属锌的缓蚀性能，并测定了BTA浓度对金属锌缓蚀效率的影响，确定了其作为缓蚀剂使用的最佳浓度值，实验证明，BTA对金属锌具有很好的缓蚀作用。     

Synthesis of nano-sized PbSe from octeno-1,2,3-selenadiazole

Reaction between trioctylphosphine selenide (TOPSe), generated from an organo-selenium compound, i.e. octeno-1,2,3-selenadiazole in tri-octylphosphine (TOP), and lead acetate has resulted formation of PbSe nano-crystals (cubes). TOPSe generated from the current method is first of its kind approach and is a novel concept. Characteristic absorption bands between 1.8-2.1 μm in near infra-red spectrum (NIR) are observed from sonicated PbSe crystals. X-ray diffraction (XRD) pattern revealed rock-salt crystal structure of PbSe with crystallite size of less than 10 nm. Observations made by scanning electron microscopy (SEM) revealed well-defined particles of the cubical crystals. XPS analysis showed that nano-crystals of PbSe were prone to air-oxidation due to ‘not-so-efficient’ capping.     

Synthesis and characterization of 1-phenyl-3-(4-phenyl-[1,2,3]triazol-1-yl)-4-styryl-azetidin-2-one films for light-emitting applications

Triazole derivatives have attracted considerable interest in OLEDs because of their electron transporting as well as hole blocking and/or exciton confining properties. To improve the quantum efficiency and lower the operating voltage of OLEDs, a novel derivative of triazole namely 1-phenyl-3-(4-phenyl-[1,2,3]triazol-1-yl)-4-styryl-azetidin-2-one (TAZ) has been designed as an electron transporting material. Thin films of TAZ have been prepared by the vacuum evaporation technique onto a glass substrate kept at different temperatures under different experimental conditions. These films have been systematically studied for their structural, optical and electrical properties. X-ray diffraction and FESEM studies of the films show an increase in crystallinity with an increase in the substrate temperature. The electrical resistance of these films is found to be 10⁷ ohm at room temperature. Analysis of optical absorption measurements on the films indicate that the interband transition energies lie within 3.4-3.6 eV. These wide band gaps show that TAZ layers can work as a hole blocking (HB) material in OLED.     

Checking of DIIV-1, DINIR-1, and DINS-1 instruments

Conclusions As follows from what has been said, the amount of specific measurements during the checking of DINIR-1 and DINS-1 instruments is quite large. Taking into account the constant addition to the inventory of these instruments as they are being produced, it is desirable, in the authors' opinion, to consider the problem of developing and subsequently producing a special instrument intended for the checking of various types of time interval meters.Translated from Izmeritel'naya Tekhnika, No. 6, pp. 77–81, June, 1971.     

An electrochemical sensor based on 1-benzyl-4-ferrocenyl-1H-[1,2,3]-triazole/carbon nanotube; detection of D-penicillamine in the presence of tryptophan

A glassy carbon electrode modified with 1-benzyl-4-ferrocenyl-1H-[1,2,3]-triazole (BFT) and carbon nanotubes have been applied to the electrocatalytic oxidation of D-penicillamine (D-PA) which reduced the overpotential by about 470 mV with obviously increase the current response. Due to its strong electrocatalytic activity towards D-PA, the modified electrode can resolve the overlapped voltammetric waves of D-PA and tryptophan (TRP) into two well-defined voltammetric peaks with peak-to-peak separation in potentials of about 270 mV. This property allows to selective determination of D-PA in the presence of TRP. The transfer coefficient (a) for the electrocatalytic oxidation of D-PA and diffusion coefficient of this substance under the experimental conditions were also investigated. In phosphate buffer solution (PBS) of pH 8.0, the oxidation current increased linearly with two concentration intervals of D-PA, one is 1.0 to 10.0 μM and, the other is 10.0 to 800.0 μM. The detection limit (3σ) obtained by square wave voltammetry (SWV) was 0.1 μM. The proposed method was successfully applied to the determination of D-PA, and TRP in real samples.     

聚丙烯酸包囊的1-(羧甲基)-1,2,3-三唑-4-羧酸稳定胶体金对Al^3+的可视化检测

以1-(羧甲基)-1,2,3-三唑-4-羧酸(FG)作为配体制备了形貌可控、粒径分布均匀的胶体金溶液,在胶体金溶液中加入适量聚丙烯酸(PAA)聚合物实现PAA对胶体金的包囊。利用紫外可见分光光度计、透射电镜、红外光谱等分析测试手段对胶体金进行了全面表征。实验表明,1-(羧甲基)-1,2,3-三唑-4-羧酸稳定的胶体金(FG-AuNPs)对Al^3+具有良好的选择性,可以实现对Al^3+的可视化快速检测,其肉眼最低检测限达1μmol/L。机理研究表明,Al^3+与1-(羧甲基)-1,2,3-三唑-4-羧酸配体具有选择性的配位作用,通过配位作用诱导胶体金的聚集实现其快速检测的目的。在FG-AuNPs溶液中加入PAA可以提高FG-AuNPs的稳定性和对铅离子的容忍度,在其他重金属离子是高浓度的情况下提升了对Al^3+的特异性选择。     

钛合金表面磁控溅射制备HA/YSZ梯度涂层

采用射频磁控溅射法在Ti6Al4V基体上制备了HA/YSZ生物梯度涂层.借助于XRD,SEM,EDS等对溅射涂层的相组成、微观形貌和界面状态进行了研究.实验结果表明:磁控溅射的生物梯度涂层呈非晶态,经过退火处理,可以使其转化为晶态,恢复缺失的OH-1;梯度涂层的微观表面凹凸不平,并呈现网状结构和较多的孔隙,后处理仍保持梯度涂层利于新骨生长的表面形貌,并使其转变为针状结晶.HA/YSZ梯度涂层与基体结合紧密,在涂层与基体界面结合处约5.0μm范围内存在Ti,Ca,P,Zr的相互扩散层,梯度涂层与基体的界面结合强度达60.5MPa.     

Thermal conductivities of hex-1-ene,hept-1-ene,oct-1-ene,and dec-1-ene at 302–374 K

Measurements are reported on the temperature dependence of the thermal conductivity for olefins in the vapor state.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 55, No. 2, pp. 250–255, August, 1988.     

Hyper-cross-linked porous polymers based on 1, 1, 1-trimethyl-3, 3, 3-triphenyldisiloxane and their applications in water treatment

Journal of Materials Science - A series of new hyper-cross-linked porous polymers (HCP-TTDs) were successfully prepared by the Friedel–Crafts alkylation reaction of 1, 1, 1-trimethyl-3, 3,...     

Phase studies in the systems CoS1bMnS,CoS1bZnS,and CoS1bCdS

Phase relationships of the systems CoS1bMnS, CoS1bZnS, and CoS1bCdS are given based on X-ray diffraction. Rocksalt type MnS, sphalerite type ZnS, and wurtzite type CdS form solid solutions with cobalt sulfide. The unit cell dimensions of the Mn_1?xCo_xS, Zn_1?xCo_xS, and Cd_1?xCo_xS mixed crystals obey Vegard's law. Lattice constants of hypothetical rocksalt, sphalerite, and wurtzite type CoS have been extrapolated to be a_o = 505, a_o = 534, and a_o = 380, c_o = 625 pm. The solubility limits determined from lattice constant measurements are 23, 41, and 20 mol% CoS at 1000° C. The solubility of cobalt sulfide in MnS, ZnS, and CdS decreases with decreasing equilibrium temperature. In the case of MnS and CdS the solubility increases with increasing Co/S ratio of the cobalt sulfide, viz. Co₉S₈, CoS (mixture of Co₉S₈ and Co_1?xS with 1 : 1 ratio of Co/S), and Co_0.97S. No detectable solubility of MnS, ZnS, or CdS in cubic Co₉S₈ could be observed. A possible incorporation of little amounts of these sulfides into NiAs type Co_1?xS cannot be excluded.     

Mild steel corrosion inhibition in HCl by di-alkyl and di-1,2,3-triazole derivatives of uracil and thymine

The corrosion inhibition efficiency (IE) of four di-alkyl derivatives of uracil and thymine and six 1,2,3-triazole benzyl derivatives of uracil and thymine compounds was measured in the system: pipeline steel grade API 5L X52/1 M HCl using electrochemical impedance spectroscopy (EIS). The influence of the inhibitor concentration, 5–200 ppm, on the IE of all these compounds was determined. The results obtained showed that in all cases, the IE increased with increasing inhibitor concentration, and that, except for one of the di-alkyl derivatives of uracil, that was capable of attaining solely an IE of 84% at 200 ppm, the remainder displayed IEs greater that 90% at rather low concentrations, namely around 20 ppm. In this sense, the most remarkable inhibitor was one of the 1,2,3-triazole benzyl derivative of uracil, which gave 96% IE with merely 5 ppm. For all cases, it was found that these inhibitors follow a physisorption mechanism, which can be adequately described by the Langmuir isotherm. Moreover, it is shown that these compounds can affect both the anodic and cathodic processes, thus it can be classified as a mixed-type inhibitor capable of blocking both anodic and cathodic sites on the API 5L X52 steel surface immersed in HCl. The influence of the steel immersion time on their IE was also assessed in the corroding media for the two most efficient inhibitors. It is shown that even when the IE of both inhibitors diminished practically linearly as a function of time, both can provide adequate protection (IE > 88%) to the steel substrate even after 350 exposure hours to this highly corrosive media.     

Electrical properties of some (1, 1, 1) intermetallic compounds

Many intermetallic compounds form with a gap in their density of states at the Fermi level, giving rise to relatively large Seebeck coefficients, on the order of –150 to –300 V/deg. at room temperature. Consequently, when combined with reasonable carrier mobilities in the range of 30 to 50 cm2/V-s, half-Heusler compounds, such as MNiSn where M = (Ti, Zr, Hf), become attractive candidates for intermediate temperature (300°C to 600°C) thermoelectric applications. Samples of TiNiSn were prepared by arc melting and homogenized by various heat treatments. The temperature dependence of the electrical resistivity, Seebeck coefficient, and thermal diffusivity of these samples was characterized between 22°C and 900°C. The electrical resistivity and thermopower both decrease with increasing temperature, consistent with semiconducting behavior. The electrical power factor, defined as S2/ where S is the Seebeck coefficient and is the resistivity, appears quite sensitive to the degree of homogenization in the microstructure and values in excess of 25 W/cm-°C2 were observed in nearly single phase alloys within the 300 to 600°C temperature range. A brief survey of other selected ternary intermetallic compounds is also presented.     

刺绣与标准化(英文)

When talking about the embroidery,we always have this beautiful image in mind:a mild and quiet girl holds the embroidery frame in one hand and threads a needle with the other hand gracefully.Indeed,in the long Chinese history,embroidery is not only a women’s exclusive activity,