检测123：奥林巴斯Olympus μ[mju：]ZOOM WIDE 80 DELUXE照相机测试报告

奥林巴斯μ［ｍｊｕ：］ＺＯＯＭ系列照相机是在ｕ［ｍｊｕ：］－１的基础上开发的变焦袖珍照相机,她们秉承了μ［ｍｊｕ：］系列照相机精致小巧的外形特征。又增加了变焦等功能,使照相机的摄影功能更加强大。在一系列的μ［ｍｊｕ：］ＺＯＯＭ相机中,广角端的焦距均为３８ｍｍ,唯有这一款的广角端焦距达到了２８ｍｍ,这在奥林巴斯的３５ｍｍ平视取景袖珍照相机中是独一无二的。本人自己有一具ＯＬＹＭＰＵＳ　μ［ｍｊｕ：］－Ⅱ照相机,用它拍摄的照片影像清晰,色彩亮丽,给我留下了深刻的印象。在友人旅游时要求推荐购买照相机时,…     

奥林巴斯μ[mju:]-ⅡZOOM80相机

奥林巴斯相机公司在推出享有价廉物美盛名的μ[mju:]-Ⅱ相机后不久,于1999年又推出μ[mju:]-Ⅱ ZOOM80相机,该机基本功能与μ[mju:]-Ⅱ相近,其最大的改进是增加了38~80mm变焦功能,使该机增强了远景拍摄能力,特别是可以作标准的肩部以上的人像摄影,从而大大扩展了相机功能,弥补了μ[mju:]-Ⅱ相机的不足。     

奥林巴斯μ-Ⅱ ZOOM 170照相机

日本奥林巴斯光学工业有限公司在１９９１年３月首推了一款μ－Ⅰ袖珍照相机，其微微起伏的大海波浪式外形设计，立刻引起了市场轰动，成了畅销不衰的经典。并从而引发了奥林巴斯卜系列照相机洋洋洒洒一发不可收地推出了１３款相机，焦距范围覆盖了ｆ２８ｍｍ到ｆ１７０ｍｍ。在μ－Ⅰ照相机诞生后１０年的时间里，累计生产销售突破了２０００万架。在中国，奥林巴斯成了继理光照相机后又一个众人推崇的日本照相机品牌。 奥林巴斯μ－Ⅱ ＺＯＯＭ１７０照相机是在μ－Ⅰ型照相机上市１０周年之际（２００１年３月）推出的μ系列中最新的一款…     

奥林巴斯(Olympus)IS-300AF照相机

随着照相机科技的发展,越来越多的各档次照相机源源不断地面市,以满足不同层次消费者的需求,同时也给摄影爱好者提供了更为广泛的选择余地。本文所介绍的是日本奥林巴斯光学有限公司生产的IS-300全功能单镜头反光照相机。IS-300的杰出之作是具备了高度敏锐的28~110mm4倍变焦镜头     

我看尼康Zoom120ED/QD奥林巴斯ZOOM140DELUXE

尼康(Nikon)Zoom120ED/QD(以下简称尼康120ED/QD)与奥林巴斯(Olympus)ZOOM140DELUXE(以下简称奥林巴斯140DELUXE)这两种型号的轻便全自动变焦型照相机,分别由日本的两大著名光学公司:尼康光学株式会社及奥林巴斯光学工业株式会社在2 0世纪末推出的产品,其中奥林巴斯140DELUXE推出时间(约在1998年)略早于尼康120ED/QD.因此,奥林巴斯140DELUXE在市场上的占有率相对较大,这除了该品牌照相机的光学素质较高外,主要还得益于其独特的外观设计及营销策略.     

我看尼康Zoom120ED/QD与奥林巴斯ZOOM140DELUXE

尼康（Ｎｉｋｏｎ）Ｚｏｏｍ１２０ＥＤ／ＱＤ（以下简称尼康１２０ＥＤ／ＱＤ）与奥林巴斯（Ｏｌｙｍｐｕｓ）ＺＯＯＭ１４０ＤＥＬＵＸＥ（以下简称奥林巴斯１４０ＤＥＬＵＸＥ）这两种型号的轻便全自动变焦型照相机，分别由日本的两大著名光学公司：尼康光学株式会社及奥林巴斯光学工业株式会社在２０世纪末推出的产品，其中奥林巴斯１４０ＤＥＬＵＸＥ推出时间（约在１９９８年）略早于尼康１２０ＥＤ／ＱＤ。因此，奥林巴斯１４０ＤＥＬＵＸＥ在市场上的占有率相对较大，这除了该品牌照相机的光学素质较高外，主要还得益于其独特的外观…     

Studies on Protein–[60]Fullerene Interactions: The Lysozyme–[60]Fullerene Model System

Abstract

A lysozyme–[60]fullerene adduct was synthesized and isolated for the first time. This adduct was water‐soluble and showed strong interaction between lysozyme and [60]fullerene and was characterized by UV‐VIS and fluorescence energy transfer technique. Keeping possible biomedical applications of [60]fullerene in view, the protein–[60]fullerene interactions were studied taking lysozyme as a model protein.     

[Co80Fe10Ni10]20Cu80-xCrx块体合金的巨磁电阻效应研究

在氩气气氛中用熔炼法制备了[Co80Fe10Ni10]20Cu80-xCrx系列Cu基巨磁电阻合金．通过光学显微镜、透射电子显微镜、场致发射扫描电镜和电子探针研究了[Co80Fe10Ni10]20Cu80-xCrx合金在1000℃均匀化处理6h后水淬．以及随后的300～700℃，30～150min回火处理的微观结构及组分。用直流四探针法测量了合金的室温巨磁电阻效应(GMR)。结果表明．合金在回火时从基体相中析出了高度弥散的含Fe、Ni、Co的纳米磁性新相。回火温度对合金的磁电阻效应影响很大，样品在600℃温度回火90min时，合金的室温GMR效应最好，可达8．61％。少量合金元素Cr的添加替代(Cr代Cu)消除了Co-Fe-Ni—Cu合金中的混溶裂隙，改善了合金的加工性但也降低了合金的磁电阻效应。     

Hydrothermal Crystallization in the Systems LiOH–MO2–GeO2–H2O (M = Ti, Sn) at 500°C and 0.1 GPa: Li2Ti[5]Ge[4]O5 and Li2Ge[6]Ge2 [4]O6 Phase Relations

Crystallization in the LiH–Ti₂–Ge₂–H₂O and LiOH–SnO₂–GeO₂–H₂O hydrothermal systems was studied at 500°C and 0.1 GPa. The phases crystallizing in the Ti system are Li₂Ti^[5]Ge^[4]O₅, Li₂Ge^[6]Ge₂ ^[4]O₆(OH)₂, Li₃HGe₄ ^[6]Ge₃ ^[4]O₁₆ · 4H₂O, and Li₂Ge^[4]O₃ (Ge in four- or sixfold oxygen coordination, and Ti in fivefold oxygen coordination). Over a wide range of TiO₂ : GeO₂ molar ratios (6 : 1 to 1 : 1), the dominant phase is Li₂Ge^[6]Ge₂ ^[4]O₆(OH)₂. At higher GeO₂ contents (TiO₂ : GeO₂ = 1 : 2 to 1 : 6), both Li₂Ti^[5]Ge^[4]O₅ and Li₂Ge^[6]Ge₂ ^[4]O₆(OH)₂ crystallize. The crystallization fields of Ge-containing phases at TiO₂ : GeO₂ = 1 : 2 to 1 : 6 are (in order of increasing LiOH concentration) GeO₂ (rutile structure), Li₂Ti^[5]Ge^[4]O₅ + Li₂Ge^[6]Ge₂ ^[4]O₆(OH)₂, and Li₂Ti^[5]Ge^[4]O₅ + Li₂Ge^[6]Ge₂ ^[4]O₆(OH)₂ + Li₂Ge^[4]₃ + Li₃HGe₄ ^[6]Ge₃ ^[4]O₁₆ · 4H₂O. The phases crystallizing in the Sn system are Li₂Ge^[6]Ge₂ ^[4]O₆(OH)₂, Li₃HGe₄ ^[6]Ge₃ ^[4]O₁₆ · 4H₂O, and Li₂Ge^[4]O₃. Tin is present in the form of SnO₂ only. The structures of Li₂Ti^[5]Ge^[4]O₅ and Li₂Ge^[6]Ge₂ ^[4]O₆(OH)₂ are characterized by the simplest type of matrix assembly: direct packing of substructural precursor units and their two-dimensional growth in various crystallographic directions.     

BIZ [US]: Looking Productively to the Representation of the “self” in photographic portraiture

Portraiture, says Richard Brilliant, is one of the earliest attempts to encounter the other and the self. It is like a window opening to our “self” through the “other”. That is why observing – looking at – portraits is so attractive, so challenging. Fascinated by this “opening” and being an admirer of photographic portraiture, I came across a photographic work that inspired me to reflect on the uncanny moment between the poser and the camera/photographer. The following paper is the result of this reflection, which not only analyses the moment of the pose in photography but also questions the representation of the “self” in photographic portraiture while introducing the work of two contemporary Turkish photographers.     

Crystallographic studies on substituted m-terphenyls: identification of weak [CH3···I] interactions

Crystallographic studies of 2,6-bis(2,4,6-trimethylphenyl)-4-methyliodobenzene 1 and 2,6-diphenyl-4-methyliodobenzene 2 were performed and in both cases [CH₃···I] interactions were identified. Theoretical calculation of the dipole moment of 1 and the partial charges of the iodine and methyl hydrogens were performed. These charges, although small, suggest that they are large enough to encourage the formation of weak dipole-dipole interactions in the absence of other stabilizing forces     

Phase transition study in a [Cu2HgI4: 0·xAgI] mixed composite system

A novel composite superionic system, [Cu₂HgI₄: 0·xAgI], (x = 0.2, 0.4, 0.6 mol wt.%), was prepared. A [Cu₂HgI₄] system was used as the host. Electrical conductivity was measured to study the transition behaviour at frequencies of 100 Hz, 120 Hz, 1 kHz and 10 kHz in the temperature range 90–170°C using a Gen Rad 1659 RLC Digibridge. Conductivity increased sharply during the β?α phase transition. Upon increasing the dopant-to-host ratio, the conductivity of the superionic system exhibited Arrhenius (thermally activated)-type behaviour. DTA, DTG, TGA and X-ray powder diffraction were performed to confirm doping effect and transition in the host. The phase transition temperature increased with an increase in the dopant concentration. Activation energies in eV for pre- and post-transition phase behaviour are also reported. Due to an interaction between [Cu₂HgI₄] and AgI, the addition of AgI to [Cu₂HgI₄] shifted the phase transition of the host [Cu₂HgI₄].     

Tetraphenylpyrrolo[3,2‐b]pyrroles: Synthesis,Thermal, Optical,Electrochemical Properties and Photovoltaic Applications

We reported two tetraphenylpyrrolo[3,2‐b]pyrroles in which the central core is functionalized by electron-rich functions: methoxy and di(4-methoxyphenyl)aminyl. The targeted compounds have good solubility in common organic solvents, high thermal stability and glass forming capacity. The optical and electrochemical properties of these compounds suggest use in a diverse range of applications. When utilized as the hole transporting layer of the planar perovskite solar cells, power conversion efficiencies ranging from 12.8 to 14.5% were obtained.

     

Dithieno[3,2-f:2′,3′-h]quinoxaline-Based Photovoltaic–Thermoelectric Dual-Functional Energy-Harvesting Wide-Bandgap Polymer and its Backbone Isomer

Both organic solar cells (OSCs) and organic thermoelectrics (OTEs) are promising energy-harvesting technologies for future renewable and sustainable energy sources. Among various material systems, organic conjugated polymers are an emerging material class for the active layers of both OSCs and OTEs. However, organic conjugated polymers showing both OSC and OTE properties are rarely reported because of the different requirements toward the OSCs and OTEs. In this study, the first simultaneous investigation of the OSC and OTE properties of a wide-bandgap polymer PBQx-TF and its backbone isomer iso-PBQx-TF are reported. All wide-bandgap polymers form face-on orientations in a thin-film state, but PBQx-TF has more of a crystalline character than iso-PBQx-TF, originating from the backbone isomeric structures of α,α ′/β,β ′-connection between two thiophene rings. Additionally, iso-PBQx-TF shows inactive OSC and poor OTE properties, probably because of the absorption mismatch and unfavorable molecular orientations. At the same time, PBQx-TF exhibits both decent OSC and OTE performances, indicating that it satisfies the requirements for both OSCs and OTEs. This study presents the OSC and OTE dual-functional energy-harvesting wide-bandgap polymer and the future research directions for hybrid energy-harvesting materials.     

Analysis of multiple matrix cracking in [±θm/90n]s composite laminates. Part 1: In-plane stiffness properties

In previous work Fan and Zhang¹ have proposed the equivalent constraint model (ECM) to predict the effect of matrix cracking on the in-plane stiffness properties of [±θ_m/90_n]_s composite laminates loaded in tension. The model is based on a two-dimensional shear-lag analysis where out-of-plane shear stresses in the constraining ±θ layers are assumed to vary linearly. In the present paper this shear-lag model is further developed to allow partial variation of shear stresses across the thickness of the constraining layers. The effect of non-uniform matrix cracking on the stiffness properties is also examined. Predictions of the new model compare favourably with experimental results for various multiply laminates and the discrepancy is less than that given by other theoretical models.