scholarly journals Anti-Ferromagnetic RuO2: A Stable and Robust OER Catalyst over a Large Range of Surface Terminations

Author(s):  
Qiuhua Liang ◽  
Anja Bieberle-Hütter ◽  
Geert Brocks
Keyword(s):  
Author(s):  
J. F. Hainfeld ◽  
J. S. Wall

Cost reduction and availability of specialized hardware for image processing have made it reasonable to purchase a stand-alone interactive work station for computer aided analysis of micrographs. Some features of such a system are: 1) Ease of selection of points of interest on the micrograph. A cursor can be quickly positioned and coordinates entered with a switch. 2) The image can be nondestructively zoomed to a higher magnification for closer examination and roaming (panning) can be done around the picture. 3) Contrast and brightness of the picture can be varied over a very large range by changing the display look-up tables. 4) Marking items of interest can be done by drawing circles, vectors or alphanumerics on an additional memory plane so that the picture data remains intact. 5) Color pictures can easily be produced. Since the human eye can detect many more colors than gray levels, often a color encoded micrograph reveals many features not readily apparent with a black and white display. Colors can be used to construct contour maps of objects of interest. 6) Publication quality prints can easily be produced by taking pictures with a standard camera of the T.V. monitor screen.


Author(s):  
G. M. Michal ◽  
T. K. Glasgow ◽  
T. J. Moore

Large additions of B to Fe-Ni alloys can lead to the formation of an amorphous structure, if the alloy is rapidly cooled from the liquid state to room temperature. Isothermal aging of such structures at elevated temperatures causes crystallization to occur. Commonly such crystallization pro ceeds by the nucleation and growth of spherulites which are spherical crystalline bodies of radiating crystal fibers. Spherulite features were found in the present study in a rapidly solidified alloy that was fully crysstalline as-cast. This alloy was part of a program to develop an austenitic steel for elevated temperature applications by strengthening it with TiB2. The alloy contained a relatively large percentage of B, not to induce an amorphous structure, but only as a consequence of trying to obtain a large volume fracture of TiB2 in the completely processed alloy. The observation of spherulitic features in this alloy is described herein. Utilization of the large range of useful magnifications obtainable in a modern TEM, when a suitably thinned foil is available, was a key element in this analysis.


2018 ◽  
Vol 5 (4) ◽  
pp. 1-6
Author(s):  
Khurram Faisal Jamal

Islamic banking is basically a system of financial intermediation, its primary objective is to avoid receipt and payment of interest. Islam does not only prohibit dealing with interest but also with liquor, pork, gambling, pornography and any other thing which are considered haram according to Shariah. The objectives of the research is to study and describe the Islamic financing techniques used by Islamic banking institutions in Malaysia and Pakistan. For this research seven variables Promotion, Product, Preference, Knowledge, Performance, Problem and Infrastructure was taken. Qualitative technique was used to answer the research objective. The findings of research indicate that lack of awareness of Islamic banking is very high in Pakistan as compared to Malaysia. A few promotions were used by Islamic banks in Pakistan while in Malaysia customers are knowledgeable about Islamic banking because banks promote them aggressively. There is a need of government and education sector support to promote Islamic banking in both countries. The study also found that Islamic banks in Malaysia have large range of products as compared to Pakistan. The practitioners from both countries are agreed at this point that BBA, Ijarah and Murabaha are more profitable and less risky than Musharaka and Mudaraba. The Islamic banking products are almost used for same purposes in both countries while some differences are also exists.  Keywords: Islamic Finance, Comparative Study, Malaysia, Pakistan


Jurnal KATA ◽  
2018 ◽  
Vol 2 (2) ◽  
pp. 356
Author(s):  
Saiko Rudi Kasenda

<p><em>This article is aimed to investigate face threathening acts and face saving acts demonstrated by Anies Baswedan dan Basuki Tjahaja Purnama as the candidates of DKI Jakarta governor during the debate held in April 2017. Face threatening act and face saving act are analyzed because they are able to show not only their positive image but also the negatve one in front of not only to each candidate but also to the audience watching the debate. Politeness theory from Brown and Levinson (1987.) are employed to analyze both candidates’ face threatening acts and saving acts since this theory provides detailed descriptions of a large range of strategies that can be used to deeply understand both face threatening acts and face saving act performed by the candidates. The context surrounding the debate becomes a crucial point to analyze how politeness strategy is applied to show face thratening act and face saving act. Through qualitative method, this study found that 1) Bald on-record is the strategy used by the candidates to show face threatening and they are intended to show contradictions, to disagree, to insult, to interrupt, to speak out-of-topic, to challenge, and to exaggerate. 2) Both candidates use positive and negative strategies to show face saving act intended to show contradictions, to assert common ground, to show agreement, to joke, to apologize, and to avoid disagreement. 3) The face threatening act and saving acts can be considered as the efforts to defend their argumentations and to preserve their positive faces, 4.) The use of the word “kita” and passive voice can be seen as markers in both candidates’ utterances to minimize the imposed face threatening act and to signal solidarity to each candidate and to audience, 5) While Anies is revealed to be the one who more frequently uses face threatening act, Basuki is the candidate who uses face saving act more often during the debate. The study is expected to enrich the study in the field of pragmatics focusing on the use of politeness strategy. </em></p><p> </p><p>Artikel ini bertujuan untuk menginvestigasi tindak pengancaman muka wajah dan tindak penyelamatan wajah yang ditunjukkan oleh Anies Baswedan dan Basuki Tjahaja Purnama pada Debat Pilkada gubernur provinsi DKI Jakarta 2017.<strong> </strong>Tindak pengancaman wajah dan penyelamatan wajah diteliti pada makalah ini karena dapat merepresentasikan citra positif maupun citra negatif kandidat pilkada Gubernur DKI tidak hanya dihadapan masing-masing kandidat tetapi juga kepada masyarakat umum yang menyaksikan. Teori kesantunan dari Brown dan Levinson digunakan untuk menganalisis tindak pengancaman muka dan tindak penyelamatan muka kedua kandidat karena teori ini memiliki penjelasan yang komprehensif tentang berbagai strategi yang dapat dipergunakan untuk memahami secara mendalam bagaimana tindak pengancaman dan penyelamatan wajah ditunjukkan oleh kedua kandidiat. Konteks topik debat yang diangkat dipahami untuk dapat menganalisis tindak pengancaman dan penyelamatan wajah oleh Anies dan Basuki.  Melalui metode kualitatif, studi ini menemukan bahwa 1) Bald on-record adalah strategi yang sering digunakan untuk menunjukkan tindak pengancaman muka dan ditujukan untuk menyatakan kontradiksi, menyatakan ketidaksetujuan, menyinggung, menginterupsi, berbicara di luar topik pembicaraan, menantang kandidat lain, dan memberikan pernyataan yang berlebihan. 2) Tindak penyelamatan muka dilakukan dengan strategi kesantunan positif dan negatif seperti menyatakan kontradiksi, menegaskan common ground, memberikan persetujuan, membuat lelucon, meminta maaf, dan menghindari ketidaksetujuan. 3) Tindak pengancaman muka dan penyelamatan muka dapat dianggap sebagai cara untuk mempertahankan argumentasi kedua kandidat dan untuk melindungi wajah positif masing-masing.4) Penggunaan kata “kita” dan kalimat pasif dimaksudkan untuk meminmalisiri ancaman sekaligus sebagai sinya solidaritas.5) Anies ditunjukkan sebagai kandidat yang lebih sering menggunakan tindak pengancaman muka, sedangkan Basuki adalah kandidat yang lebih sering menunjukkan penyelamatan muka selama debat berlangsung. Studi ini diharapkan dapat memperkaya pemahaman di bidang pragmatik khususnya tentang penggunaan strategi kesantunan</p>


1997 ◽  
Vol 182 ◽  
pp. 391-405 ◽  
Author(s):  
Lee Hartmann

Outflows from low-mass young stellar objects are thought to draw upon the energy released by accretion onto T Tauri stars. I briefly summarize the evidence for this accretion and outline present estimates of mass accretion rates. Young stars show a very large range of accretion rates, and this has important implications for both mass ejection and for the structure of stellar magnetospheres which may truncate T Tauri disks.


Optik ◽  
2021 ◽  
Vol 237 ◽  
pp. 166729
Author(s):  
Ziming Dong ◽  
Wenlong Yang ◽  
Xinmei Liu ◽  
Yachen Gao ◽  
Zhitao Yang ◽  
...  
Keyword(s):  

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Shanshan Chen ◽  
Zhiguang Liu ◽  
Huifeng Du ◽  
Chengchun Tang ◽  
Chang-Yin Ji ◽  
...  

AbstractKirigami, with facile and automated fashion of three-dimensional (3D) transformations, offers an unconventional approach for realizing cutting-edge optical nano-electromechanical systems. Here, we demonstrate an on-chip and electromechanically reconfigurable nano-kirigami with optical functionalities. The nano-electromechanical system is built on an Au/SiO2/Si substrate and operated via attractive electrostatic forces between the top gold nanostructure and bottom silicon substrate. Large-range nano-kirigami like 3D deformations are clearly observed and reversibly engineered, with scalable pitch size down to 0.975 μm. Broadband nonresonant and narrowband resonant optical reconfigurations are achieved at visible and near-infrared wavelengths, respectively, with a high modulation contrast up to 494%. On-chip modulation of optical helicity is further demonstrated in submicron nano-kirigami at near-infrared wavelengths. Such small-size and high-contrast reconfigurable optical nano-kirigami provides advanced methodologies and platforms for versatile on-chip manipulation of light at nanoscale.


2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Wenjie Yan ◽  
Huei-Ru Fuh ◽  
Yanhui Lv ◽  
Ke-Qiu Chen ◽  
Tsung-Yin Tsai ◽  
...  

AbstractThere is an emergent demand for high-flexibility, high-sensitivity and low-power strain gauges capable of sensing small deformations and vibrations in extreme conditions. Enhancing the gauge factor remains one of the greatest challenges for strain sensors. This is typically limited to below 300 and set when the sensor is fabricated. We report a strategy to tune and enhance the gauge factor of strain sensors based on Van der Waals materials by tuning the carrier mobility and concentration through an interplay of piezoelectric and photoelectric effects. For a SnS2 sensor we report a gauge factor up to 3933, and the ability to tune it over a large range, from 23 to 3933. Results from SnS2, GaSe, GeSe, monolayer WSe2, and monolayer MoSe2 sensors suggest that this is a universal phenomenon for Van der Waals semiconductors. We also provide proof of concept demonstrations by detecting vibrations caused by sound and capturing body movements.


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