100,336 research outputs found
Personal Papers (MS 80-0002)
No full textLetter from A. H. Blackshear, Jr., to Cheng Tsung-O mentioning that they have his letter of April 23rd, and encloses New York Exchange for $75.00 as requested
Crack Models For A Transversely Anisotropic Medium
No full textA commonly used model for a transversely anisotropic crack rock is that by Hudson
(1980, 1981). This model is based on a simplified analysis of a thin circular crack, with
displacement and stress conditions specified on the boundary. These papers have a
second order correction in addition to the first order term in porosity/crack density. In
this paper we compare the results of Hudson with those of Anderson et al. (1974) and
Cheng (1978) using the long wavelength static approximation and the ellipsoidal crack
model first proposed by Eshelby (1957). We showed that the Hudson model and those
based on the complete Eshelby theory agree for small aspect ratio cracks and small
crack densities, as expected, provided the weak inclusion version of Hudson's model
(1981) is used. For larger crack densities but small aspect ratios, Hudson's first order
term agrees with the Eshelby solution. The expansion in the second order term in crack
density is an asymptotic series and not a uniformly converging series. Thus there is no
general statement one can make about the accuracy of the second order expansion that
is valid for a variety of situations. A new expansion based on the Pade approximation is
proposed which is identical to Hudson's expansion up to second order in density. This
expansion avoids some of the problems associated with Hudson's second order expansion
such as increasing moduli with crack density at relatively small crack densities.Massachusetts Institute of Technology. Borehole Acoustics and Logging ConsortiumUnited States. Dept. of Energy (Grant DE-FG0286ER13636
Personal Papers (MS 80-0002)
No full textLetter from Cheng Tsung-O to H. Kempner requesting a payment be made to the University of Pennsylvania for registration fees
SEJARAH DAN KEUNIKAN NILAI BUDAYA MASJID CHENG HO DI PALEMBANG
No full textAbstrak: Penelitian bertujuan untuk mengetahui sejarah dan keunikan nilai budaya Masjid Cheng Ho di Palembang. Metode yang digunakan dalam penelitian ini adalah metode kualitatif melalui observasi langsung dan mengkaji dengan melakukan studi kepustakaan (library research) untuk memperoleh data penelitian. Hasil penelitian menunjukkan bahwa Masjid Al-Islam Muhammad Cheng Ho Sriwijaya Palembang atau sering dikenal dengan masjid Cheng Ho yang merupakan salah satu masjid bernuansa Islam Tionghoa yang diresmikan pada tahun 2008. Masjid Al-Islam Muhammad Cheng Ho didirikan oleh keluarga PITI Sumsel di atas tanah hibah dari PT. Amen Mulia kepada Organisasi PITI melalui perantara H. Syahrial Oesman atas berkah jasa kyai Palembang KH.Mudarrin. SM dan Kgs KH. M. Zen Syukri bin Kgs K. H Hasan Syukri yang juga merupakan pendiri Masjid Al-Islam Muhammad Cheng Ho dan Yayasan Muhammad Cheng Ho Sriwijaya PITI Sumsel yang saat itu diketuai oleh Bapak H. Haryanto. Berdasarkan penelitian menyatakan bahwa Masjid Cheng Ho juga memiliki keunikan pada bagian ornamen. Dimana ornamen masjid Cheng Ho memiliki perpaduan antara kebudayaan muslim Tionghoa dengan budaya Melayu, dan Nusantara. Ornamen yang menjadi ciri khas masjid Cheng Ho yaitu ada pada bagian gapura dan menara masjid. Hal ini dapat dilihat dari bentuk dan warna yang digunakan yaitu seperti nuansa Tionghoa atau Cina.Abstract: This study aims to determine the history and unique cultural values of the Cheng Ho Mosque in Palembang. The method used in this study is a qualitative method through direct observation and review by conducting library research to obtain research data. The results showed that the Al-Islam Muhammad Cheng Ho Mosque Sriwijaya Palembang or often known as the Cheng Ho mosque which is one of the mosques with Chinese Islamic nuances which was inaugurated in 2008. Al-Islam Muhammad Cheng Ho Mosque was founded by the PITI family in South Sumatra on a land grant. from PT. Amen Mulia to the PITI Organization through the intermediary of H. Syahrial Oesman for the blessing of the Palembang kyai KH.Mudarrin. SM and Kgs KH. M. Zen Syukri bin Kgs K. H Hasan Syukri who is also the founder of the Muhammad Cheng Ho Al-Islam Mosque and the Muhammad Cheng Ho Sriwijaya Foundation PITI Sumsel which at that time was chaired by Mr. H. Haryanto. Based on research, it is stated that Cheng Ho Mosque also has a uniqueness in the ornament section. Where the ornaments of the Cheng Ho mosque have a blend of Chinese Muslim culture with Malay culture, and the archipelago. The ornaments that characterize the Cheng Ho mosque are on the gates and minarets of the mosque. This can be seen from the shapes and colors used, which are like Chinese or Chinese nuances
SEMANGAT ADMIRAL CHENG HOO DAN EKSPRESI TOLERANSI MASJID MUHAMMAD CHENG HOO INDONESIA
No full textThe existence of Cheng Hoo's Indonesian Mosque Architecture in Surabaya is the presentation of Chinese architecture nuance. It is a new revelation for Indonesian mosque architecture. At the same time it is also the resurrection of the treasure of Indonesian architecture which had disappeared for a very long time. It is the architecture which presents itself as a synthesis of various attractive local elements. The building's expression indicates the spirit of tolerance which is the strong character of the Chinese ancestors. Primarily in this case, are the ideal and the cosmopolitan ways of living by Admiral Cheng Hoo who always lived in harmony with the new environment. Abstract in Bahasa Indonesia : Arsitektur Masjid Muhammad Cheng Hoo Indonesia di Surabaya hadir dalam sebuah arsitektur yang bernuansa Tiongkok. Sebuah bentuk arsitektur baru untuk sebuah masjid di Indonesia sekaligus sebuah pemunculan bentuk arsitektur yang telah lama hilang dalam khazanah arsitektur Indonesia. Sebuah wujud yang juga hadir sebagai perpaduan beragam elemen-elemen lokal yang menarik. Ekspresi arsitektur ini merupakan ekspresi semangat toleransi yang selalu mampu beradaptasi dengan lingkungan barunya, seperti sikap hidup nenek moyang etnis Tiongkok. Utamanya teladan dan sikap hidup Admiral Cheng Hoo yang kosmopolitan dan selalu hidup harmoni dengan lingkungan barunya. Kata kunci: arsitektur Tiongkok, arsitektur Muhammad Masjid Cheng Hoo, teladan Admiral Cheng Hoo
The last deglaciation in Italy: timing and pattern from a precisely dated stalagmite
No full textThe last deglaciation (Termination I, T-I) was the most recent global-scale climate transition. It involved a drastic temperature increase guiding massive melting of ice sheets, with a concurrent reorganization of inter- and intrahemispherical atmospheric and ocean circulation patterns.
T-I lasted ~3.0 ka (ka = kiloyears before present) in Greenland (NGRIP, 2007), although it was not a linear process. A rapid temperature increase at 14.6±0.3 ka (Bølling-Allerød, BA) was followed by a return towards glacial-like conditions (12.2±0.3 ka, Younger Dryas, YD), before the last warming that led to the Holocene (11.7±0.1 ka). Other secondary climate oscillations characterized T-I too (Cheng et al., 2020). Some of these intra-deglaciation global warmings were particularly rapid, at times occurring at centennial or even decadal timescale. This provides an interesting comparison with the current climate change.
Yet, it is not clear how T-I-related dynamics occurring at the polar regions and/or in the oceans impacted terrestrial environment at mid latitudes, in terms of rainfall and temperature variation and related environmental and ecological changes. This is especially true for the Mediterranean area, considering that its climate is connected – and controlled – by processes occurring in the Atlantic and Arctic. In Italy, T-I records of adequate chronological resolution are virtually absent.
We here present a novel speleothem record from Sant’Angelo Cave (SA1, Ostuni, Apulia) spanning from 47.7±0.1 to 8.9±0.9 ka. In the period from ~20 to ~10 ka, multiple U-Th datings (n=22) resulted in a final age model with an average uncertainty of <0.3 ka and a resolution of ~25 years. Climate proxies (δ18O, n=1045) were anchored to this chronology. The reliability of SA1-δ18O in recording palaeoclimate information was ascertained by a statistically grounded inter-cave replication test with a recently published speleothem record from a nearby site (Columbu et al., 2020). The interpretation of SA1 allows to: 1) accurately and precisely constrain, for the first time in Italy, the timing of the T-I climate pattern; 2) evaluate the impact of BA, YD and Holocene inception in southern Italy, as well as other associated events, especially in terms of rainfall variability; and 3) understand the spatio-temporal relation between the Atlantic/Greenland domain, the Mediterranean realm and monsoonal areas throughout the deglaciation. We discuss this new record within the framework of previous regional studies based on glacial (NGRIP, 2007), marine (Martrat et al., 2007) and continental proxies (Allen et al., 1999; Cheng et al., 2016), with the aim of providing a better comprehension of the timing and structure of T-I in Italy and, by extension, of the central and western Mediterranean area.
Allen J.R.M., Brandt U., Brauer A., Hubbertens H.W., Huntley B., Keller J., Kraml M., Meckeen A., Mingram J., Negendank J.F.W., Nowaczyk N.R., Oberhansli H., Watts W.A., Wulf S. & Zolitschka B. (1999) - Rapid environmental changes in southern Europe during the last glacial period. Science, 400, 740-743.
Cheng H., Edwards R.L., Sinha A., Spötl C., Yi L., Chen S., Kelly M., Kathayat G., Wang X. & Li X. (2016) - The Asian monsoon over the past 640,000 years and ice age terminations. Nature, 534, 640.
Cheng H., Zhang H., Spötl C., Baker J., et al. (2020) - Timing and structure of the Younger Dryas event and its underlying climate dynamics. Proceedings of the National Academy of Sciences, 117, 23408-23417.
Columbu A., Chiarini V., Spötl C., Benazzi S., Hellstrom J., Cheng H. & De Waele J. (2020) - Speleothem record attests to stable environmental conditions during Neanderthal-Modern Human turnover in Southern Italy. Nature Ecology & Evolution, 4, 1188-1195.
Martrat B., Grimalt J.O., Shackleton N.J., de Abreu L., Hutterli M.A. & Stocker T.F. (2007) - Four climate cycles of recurring deep and surface water destabilizations on the Iberian margin. Science, 317, 502-507.
NGRIP, North Greenland Ice Core Project Members. (2004) - High-resolution record of Northern Hemisphere climate extending into the last interglacial period. Nature, 431, 147-151
Dataset for: Synthesis of vanadium nitride-hard carbon composites from cellulose and their performance for sodium ion batteries
No full textRaw data for the figures in the paper:
Cheng, H., Garcia-Araez, N., & Hector, A. L. (2020). Synthesis of vanadium nitride-hard carbon composites from cellulose and their performance for sodium ion batteries. ACS Applied Energy Materials. DOI:10.1021/acsaem.0c00003</span
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