1,791,019 research outputs found
Reflectivity of the 410-km discontinuity from PP and SS precursors
No full textA number of studies have confirmed the global existence of a transition zone discontinuity at 410 km depth by aligning large numbers of long-period seismograms on a surface reflection phase before stacking. In particular, SS and PP precursors from the 410-km discontinuity (termed P410P and S410S) have revealed long-wavelength topography of this discontinuity. Here we extend these techniques to examine the reflection coefficient of the 410-km discontinuity. Using our measurements of P410P and S410S amplitudes, we constrain the impedance contrasts across the 410-km discontinuity. We also show lateral variations in the P wave impedance contrast at 410 km, which is typically low under North America and China and higher beneath the North Pacific. The S wave impedance contrast shows less variability on the regional scale. However, analysis of P410P and S410S amplitudes over smaller areas (by binning traces into spherical caps) shows that the S wave reflection coefficient varies over much shorter scale lengths than that for P waves. The different patterns of variation for P410P and S410S reflection amplitudes could be due to the presence of melt, water, or other chemical heterogeneities in the transition zone. Other factors such as temperature or mantle olivine content variations could also influence precursor amplitudes, but they would be expected to lead to correlated variations, and so they cannot explain all the variation that we observe
Resolución UNRN N° 410/2009. Recategorizar.
No full textFil: Universidad Nacional de Río Negro (U). Universidad Nacional de Río Negro. Río Negro, ArgentinaResolución UNRN N° 410/2009. Recategorizar.fals
Bulletin No. 410 - Intestinal Roundworms of Cattle in Wyoming
No full textBulletin No. 410 - Intestinal Roundworms of Cattle in Wyomin
محمديه (MS 409); عماد الاسلام فى ترجمة عمدة الاسلام (MS 410)
No full textBirbirinden farklı 2 adet yazmanın bir araya getirilmesiyle oluşturulmuş ve ciltlenmiş bir eserdir (Yazma numaraları : MS 409, MS 410). MS 409 : 1a’da sonunda bir mühür 1196 tarihi bulunan bir hadis metni vardır. Eserin kenarında İmâdu’l-İslâm yer almaktadır. Eser yayımlanmıştır: Yazıcıoğlu Mehmed, Muhammediyye, haz . A. Çelebioğlu, MEB, İstanbul, 1996. MS 410 : Eser 1b-275b arasında Muhammediyye’nin kenarındadır. Eser Abdülaziz el-Farsi’nin èUmdetü’l-İslâm’ının serbest bir çevirisidir
Participant 410 Community Conversations Interview
No full textIn this interview, Participant 410 shares that COVID-19 has had the greatest impact on their school experience, but that remote learning has brought some silver linings, such as reducing their long commute. They share while working at a retail pharmacy throughout the pandemic, they have not had to have direct contact with patients from behind the counter. The participant shares that it has been a challenging experience for their parents in the health care and food industries, especially at the onset of the pandemic. The participant shares that they relied on the CDC and articles and newsletters to stay up to date on COVID-19. They express that they found strength from their mom, and shares that taking the proper precautions to stay protected helped reduce fear of uncertainty felt at the start of the pandemic.New Jersey Department of Healt
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Aplikasi Sputtering Aln Dan Wn Pada Baja Aisi 410 Sebagai Tool Bedah Tulang Dan Saraf
No full textInfo lebih lanjut hub:
Lembaga Penelitian Universitas Jember
Jl. Kalimantan No.37 Telp. 0331-339385 Fax. 0331-337818 JemberMikro machining adalah proses pemesinan komponen-komponen dalam skala milimeter hingga mikrometer. Dalam bidang biomedis, proses mikro machining sangat diperlukan untuk tindakan operasi bedah tulang dan syaraf, karena tindakan operasi memerlukan tingkat akurasi dan sifat material yang baik. Salah satu bahan yang banyak digunakan sebagai cutting instrument dan non cutting instrument adalah baja AISI 410.
Material ini memiliki kelemahan sifat mekanis dan ketahanan korosinya, sehingga berbagai upaya masih terus dikembangkan untuk memperbaiki kelemahannya. Upaya pebaikan baja AISI 410 hingga saat ini banyak dilakukan dengan cara perlakuan panas, nitriding atau carburising yang dilaksanakan pada suhu tinggi. Proses perlakuan pada suhu tinggi menyebabkan terjadi warping dan distorsi, dimana hal ini dapat menyebabkan nekrosis pada sel atau tulang. Baja AISI 410 rentan mengalami pitting corrosion, dimana pelepasan ion-ion berbahaya dapat masuk terserap kedalam tubuh. Pada penelitian ini akan dikaji perlakuan pada permukaan baja AISI 410 dengan menggunakan teknik d.c. magnetron sputtering dengan terdisposisi AlN dan WN.
Bahan yang digunakan dalam penelitian adalah baja AISI 410. Proses pelapisan menggunakan lapisan monolayer AlN dengan bahan target Al dengan kemurnian 99,999% dan lapisan monolayer WN dengan bahan target W dengan kemurnian 99,999%. Teknik sputtering menggunakan teknik d.c magnetron sputtering dengan menggunakan variasi waktu, yaitu bahan substrat (bahan yang dilapisi) diletakkan di dalam ruang vakum, dimana material target (bahan pelapis) dibombardir dengan gas argon. Material hasil deposisi lapisan sputtering selanjutnya dilakukan uji komposisi kimia, uji kekasaran permukaan, uji mikrohardness, uji aus spesifik, uji mikroskopik, uji korosi, uji SEM/Edax dan uji XRD.
Berdasarkan hasil penelitian disertasi ini diperoleh kesimpulan bahwa sputtering AlN dan sputtering WN pada permukaan baja AISI 410 dapat memperbaiki sifat tahan korosi dan sifat tahan aus. Parameter utama yang mempengaruhi sifat tahan korosi dan tahan aus hasil sputtering AlN adalah kekasaran permukaan. Sifat tahan korosi dapat mengeliminasi unsur-unsur atau ion yang terlepas di dalam tubuh, sedangkan sifat tahan aus dapat mengeliminasi tingkat kekasaran yang diharapkan sebagai tool untuk peralatan bedah. Hasil analisis unsur, menunjukkan tidak terdapat unsur nikel yang terlepas ke dalam tubuh
Ritual of Uhhamuwa against plague [Commantaire] - CTH 410
No full textNotes and commentary on the ritual text of Uhhamuwa performed against plague based on the tablet concordances listed in CTH 410. Emmanuel Laroche translated this text as "Rituel d'Uhhamuwa, contre la peste,” and classified the concordance in the category of Anatolian magic in ritual texts (Catalogue des textes Hittites, No. 410).Paper (4 sheets
Ritual of Uhhamuwa against plague [Notes : Rituel d'Uhhamuwa] - CTH 410
No full textNotes on the ritual text of Uhhamuwa performed against plague based on the tablet concordances listed in CTH 410. Emmanuel Laroche translated this text as "Rituel d'Uhhamuwa, contre la peste,” and classified the concordance in the category of Anatolian magic in ritual texts (Catalogue des textes Hittites, No. 410).Paper (1 sheet
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