WorldWideScience

Sample records for basf-industriekernkraftwerk reaktor 2

  1. ANALISIS KECELAKAAN REAKTOR AKIBAT KEGAGALAN SISTEM PEMBUANG PANAS PADA REAKTOR NUKLIR GENERASI IV

    Directory of Open Access Journals (Sweden)

    A. G. Abdullah

    2012-05-01

    Full Text Available Salah satu aspek terpenting dalam proses desain reaktor nuklir adalah aspek keselamatan reaktor. Sebelum membangun reaktor secara fisik, terlebih dahulu dibuat perencaaan perhitungan yang matang termasuk melakukan simulasi kinerja keselamatannya dalam menghadapi kemungkinan kecelakaan. Penelitian ini bertujuan untuk mengembangkan model simulasi kecelakaan Pembangkit Listrik Tenaga Nuklir (PLTN yang disebabkan  gagalnya sistem pembuang panas. Kecelakaan akibat gagalnya sistem pembuang panas dipicu oleh hilangnya kemampuan pendinginan dari pembangkit uap. Urutan kecelakaan ini diawali dengan hilangnya kemampuan reaktor untuk membuang panas dari loop pendingin sekunder. Selama kecelakaan, laju pembuangan panas mengalami penurunan sedangkan temperatur masukan pendingin mengalami peningkatan. Hasil simulasi memberikan gambaran bahwa reaktor dapat bertahan dari kecelakaan. Hasil analisis kecelakaan menunjukkan bahwa temperatur maksimum bahan bakar, selongsong dan pendingin memiliki batas keselamatan yang sangat besar.One of the most important aspects in nuclear reactor design process is the safety aspect. Advanced and accurate safety simulation must be performed before it can be built.  This research aims to develop a simulation model of Nuclear Power Plant (NPP accidents due to the loss of  heat sink system. Loss of heat sink accident was triggered by the loss of cooling capability of steam generators.  This  accident  sequence  began with the loss of the reactor’s ability to remove heat from the secondary cooling loop. During the accident, the heat dissipation rate decreased whereas the coolant inlet temperatures increased till a new equilibrium level. The analysis results of the accident showed that there are large safety margin to the maximum temperature of the fuel, cladding, and coolant.

  2. Pembuatan Biodiesel Dari Minyak Kelapa Sawit RBD Dengan Menggunakan Katalis Berpromotor Ganda Berpenyangga γ-Alumina (CaO/MgO/ γ-Al2O3 Dalam Reaktor Fluidized Bed

    Directory of Open Access Journals (Sweden)

    Niar Kurnia Julianti

    2014-09-01

    Full Text Available Biodiesel merupakan salah satu energi alternatif pengganti bahan bakar fosil dari hasil reaksi transesterifikasi minyak nabati dengan metanol. Proses pembuatan biodiesel selama ini menggunakan katalis homogen NaOH atau KOH yang memiliki kelemahan terbentuknya produk samping berupa sabun dan rumitnya pemisahan produk biodiesel dengan katalis. Maka dari itu, mulai dikembangkan katalis heterogen. Penelitian ini mengembangkan katalis berpromotor ganda berpenyangga y-alumina (CaO/MgO/y-Al2O3 dalam reaktor fluidized bed. Pembuatan katalis melalui metode presipitasi CaO dan MgO pada y-Al2O3 serta asam asetat sebagai larutan precursor. Kemudian, katalis dioven selama 12 jam pada suhu 110C dan dikalsinasi pada suhu 700 C selama 5 jam. Katalis yang diperoleh digunakan untuk proses transesterifikasi dengan ratio molar minyak metanol 1:36; variabel massa katalis 4, 7, 10, 13, 16 gram; laju alir reaktan 4, 7, 10, 13, 16 ml/menit; dan suhu 125, 150, 175, 200, 225 C. Dimana yield dan % konversi terbaik dari penelitian diperoleh sebesar 0,642 gr biodiesel/gr minyak dan 63,975% pada massa katalis 16 gram, suhu 225 C dan laju alir reaktan 4 ml/menit.

  3. Fire modeling of the Heiss Dampf Reaktor containment

    International Nuclear Information System (INIS)

    This report summarizes Sandia National Laboratories' participation in the fire modeling activities for the German Heiss Dampf Reaktor (HDR) containment building, under the sponsorship of the United States Nuclear Regulatory Commission. The purpose of this report is twofold: (1) to summarize Sandia's participation in the HDR fire modeling efforts and (2) to summarize the results of the international fire modeling community involved in modeling the HDR fire tests. Additional comments, on the state of fire modeling and trends in the international fire modeling community are also included. It is noted that, although the trend internationally in fire modeling is toward the development of the more complex fire field models, each type of fire model has something to contribute to the understanding of fires in nuclear power plants

  4. Fire modeling of the Heiss Dampf Reaktor containment

    Energy Technology Data Exchange (ETDEWEB)

    Nicolette, V.F. [Sandia National Labs., Albuquerque, NM (United States); Yang, K.T. [Notre Dame Univ., IN (United States)

    1995-09-01

    This report summarizes Sandia National Laboratories` participation in the fire modeling activities for the German Heiss Dampf Reaktor (HDR) containment building, under the sponsorship of the United States Nuclear Regulatory Commission. The purpose of this report is twofold: (1) to summarize Sandia`s participation in the HDR fire modeling efforts and (2) to summarize the results of the international fire modeling community involved in modeling the HDR fire tests. Additional comments, on the state of fire modeling and trends in the international fire modeling community are also included. It is noted that, although the trend internationally in fire modeling is toward the development of the more complex fire field models, each type of fire model has something to contribute to the understanding of fires in nuclear power plants.

  5. Untersuchungen zur CO-Oxidation und Wassergas-Shift Reaktion an Au/TiO2 und Au/CeO2 Katalysatoren - Aufbau eines Niederdruck- und eines Temporal Analysis of Products Reaktors

    OpenAIRE

    Leppelt, Rainer

    2007-01-01

    The reaction order for the WGS reaction over Au/CeO2 was determined. The influence of the Au content was studied on eight catalysts with increasing gold loading. The apparent activation energy for all catalysts was determined to be 40 ± 3 kJ/mol. In DRIFTS measurements formates and carbonates were identified as main surface species. The decomposition rate of formates is the same as the reaction rate and therefore the decomposition of formates is regarded as rate limiting step. By TPD-experime...

  6. PENINGKATAN KINERJA SISTEM KESELAMATAN PASIF PADA REAKTOR NUKLIR DENGAN PENAMBAHAN KOMPONEN RVACS

    Directory of Open Access Journals (Sweden)

    A. G. Abdullah

    2014-07-01

    Full Text Available Kelengkapan sistem keselamatan pasif dan inheren pada reaktor lanjut merupakan prasyarat utama. Makalah ini mengeksplorasi hasil desain konseptual sistem pembuang sisa panas pada pusat listrik tenaga nuklir berjenis Very High-Temperature Reactor. Tujuan riset ini untuk merancang sistem pembuang sisa panas pusat listrik tenaga nuklir yang terdapat pada dinding reaktor. Studi kinerja Reactor Vessel Auxliary Cooling System (RVACS dilakukan pada dua jenis pendingin yaitu Timbal-Bismut dan Liquid Salt. Panas dari dinding reaktor dihapus melalui sirkulasi alamiah pada keadaan tunak. Analisis melibatkan sistem perpindahan panas secara radiasi, konduksi dan konveksi alami. Perhitungan perpindahan panas dilakukan pada elemen reaktor vessel, dinding luar guard vessel, dan pelat pemisah. Hasil analisis kecelakaan menunjukkan kedua jenis sistem pendingin reaktor dan sistem pasif sisa pembuangan panas cukup menghapus sisa panas hasil peluruhan dengan sirkulasi alami.ABSTRACTCompleteness of passive safety systems and inherent in advanced reactors is a major prerequisite. This paper explores the results of a conceptual design of the heat removal system at the nuclear power plant (NPP type Very High-Temperature Reactor. The purpose of this research was to design the reactor vessel auxiliary cooling system (RVACS of NPP located within the reactor walls. The RVACS performance study was conducted on two types of coolant: Lead-Bismuth and Liquid Salt. Heat was removed from the reactor vessel through the natural circulation in the steady state. Analyses of heat transfer systems involved radiation, conduction and natural convection. Heat transfer calculations were performed on the reactor vessel, guard vessel, and perforated plate. The results from the accident analysis showed that both types, the reactor coolant system and the passive residual heat removal system, adequately remove remaining heat of the decay by a natural circulation.

  7. Studi Pembuatan Pupuk Kalium Sulfat dari Abu Sekam Padi dan Gipsum Alam Menggunakan Reaktor Tangki Berpengaduk

    Directory of Open Access Journals (Sweden)

    Muhammad Husin Ismayanda

    2015-07-01

    Full Text Available Proses pembuatan pupuk kalium sulfat umumnya dibuat dari asam klorida dan bahan baku yang mengandung anion sulfat (SO4. Dalam penelitian ini, pembuatan pupuk kalium sulfat dari bahan baku batuan gipsum alam sebagai sumber sulfat dan abu sekam padi sebagai sumber kalium telah dilakukan. Penelitian ini bertujuan mengkaji kemungkinan pembuatan pupuk kalium sulfat dari gipsum alam dan abu sekam padi dan juga mengetahui pengaruh kecepatan pengadukan, temperatur operasi dan waktu proses terhadap persentase konversi kalium sulfat yang dihasilkan. Dalam penelitian ini juga dipelajari kinetika reaksi yang terjadi selama proses pembentukan kalium sulfat. Proses pembuatan pupuk kalium sulfat dilakukan dalam reaktor tangki berpengaduk. Varibel berubah dari penelitian ini adalah kecepatan putaran pengaduk, temperatur proses, dan waktu reaksi. Untuk menganalisis produk yang dihasilkan, metode yang digunakan mengacu pada Standar Nasional Indonesia (SNI 02-2809-2005. Hasil penelitian menunjukkan bahwa pupuk kalium sulfat dapat dihasilkan dari reaksi antara gipsum yang mengandung kalsium sulfat dan abu sekam padi yang mengandung kalium karbonat dengan konversi kalium dari endapan sebesar 99,87% dan konversi kalium dari filtrat sebanyak 18,22%. Nilai konversi sulfat dari endapan hanya sebesar 0,69% dan nilai konversi sulfat dari filtrat 0,26%.Dalam penelitian ini kondisi terbaikproses pembuatan pupuk kalium sulfat adalah pada waktu reaksi 80 menit, kecepatan putaran pengaduk 400 rpm dan temperatur operasi 90ºC. Hasil analisis juga menunjukkan bahwa produk pupuk kalium sulfat tidak mengandung asam bebas sebagai H2SO4 dan klorida (Cl, akan tetapi mengandung kalium dan sulfat. Nilai konstanta kecepatan reaksi (k yang didapat dalam penelitian ini adalah sebesar 0,00218 ppm-1 menit-1 dan nilai laju pengurangan reaktan (rA sebesar 8,129 x 10-5 ppm/menit.

  8. PERFORMA OKSIDASI METAN PADA REAKTOR KONTINYU DENGAN PENINGKATAN KETEBALAN LAPISAN BIOCOVER LANDFILL

    Directory of Open Access Journals (Sweden)

    Opy Kurniasari

    2013-11-01

    methane through the form of methanol metabolite. ABSTRAKPenanganan sampah kota di Indonesia pada umumnya dilakukan pada tempat pemrosesan akhir sampah (TPA, yang sebagian besar dilakukan dengan cara pengurugan (landfilling yang cenderung bersifat anaerob (tidak ada oksigen. Cara pengurugan ini biasanya dioperasikan lapis perlapis sehingga memungkinkan terjadinya proses anaerob. Pada kondisi ini dipastikan biogas, yaitu gas metana (CH4 dan CO2, akan muncul. Metana adalah gas rumah kaca dengan potensi pemanasan global lebih besar dari CO2, dan dapat mengabsorpsi radiasi infra merah 23 kali lebih efisien dari CO2 pada periode lebih dari 100 tahun. Salah satu cara yang dapat dilakukan untuk mengurangi gas metana dari landfill yang lepas ke alam adalah dengan mengoksidasinya dengan memanfaatkan material penutup landfill (biocover sebagai media mikroorganisma pengoksidasi metana. Aplikasi kompos sebagai material penutup landfill merupakan pendekatan dengan biaya rendah untuk mereduksi emisi gas dari landfill sehingga cocok untuk negara berkembang. Biocover yang digunakan pada penelitian ini adalah kompos landfill mining, yaitu kompos yang terdegradasi secara alami di landfill. Tujuan penelitian ini adalah mengevaluasi kemampuan biocover kompos landfill mining dalam mengoksidasi metana pada ketebalan lapisan tertentu dengan kondisi aliran kontinyu. Tiga buah reaktor kolom yang digunakan terbuat dari flexy glass berukuran tinggi 70 cm dan diameter 15 cm. Gas metana dialirkan dari bawah reaktor secara kontinyu dengan laju alir 5 ml/menit. Kolom diisi dengan biocover kompos landfill mining dengan ketebalan lapisan 5, 25, 35 dan 60 cm. Hasil percobaan menunjukkan bahwa semakin tebal lapisan biocover, semakin tinggi efisiensi oksidasi metana. Efisiensi oksidasi yang diperoleh pada setiap ketebalan lapisan 15, 25, 35 dan 60 cm adalah masing-masing 56,43%, 63,69%, 74,58% dan 80,03%, dengan laju oksidasi 0,287 mol m-2 d-1 dan fraksi oksidasi 97%. Hasil oksidasi yang diperoleh tersebut

  9. PENGARUH GEMPA PATAHAN LEMBANG TERHADAP FLEKSIBILITAS PIPA DAN KEGAGALAN NOZEL PERALATAN SISTEM PENDINGIN PRIMER REAKTOR TRIGA 2000 BANDUNG

    Directory of Open Access Journals (Sweden)

    H.P. Raharjo

    2012-02-01

    Full Text Available Gempa bumi di suatu instalasi nuklir dapat menyebabkan terjadinya kerusakan sistem peralatan karena adanya perubahan fleksibilitas pipa akibat beban berlebih pada sistem perpipaannya. Beban dari sistem perpipaan dapat membebani nozel peralatan seperti pompa, penukar panas, dll. Apabila beban tersebut terlalu besar dan melebihi beban yang diizinkan akan mengakibatkan kegagalan nozel peralatan. Penelitian ini menganalisis besarnya beban-beban yang terjadi di semua nozel  sistem pendingin primer Reaktor TRIGA 2000 Bandung. Analisis dilakukan dengan bantuan perangkat lunak Caesar II yang berbasis metode elemen hingga (finite element method. Acuan analisis yang digunakan adalah code ASME B31.1 yang mengatur tentang perancangan sistem perpipaan untuk sistem pembangkit daya (Power Piping. Hasil analisis menunjukkan bahwa gaya yang terjadi pada nozel masukan pompa arah aksial (FZ melebihi batas yang diijinkan. Oleh karena itu perlu dilakukan modifikasi terhadap jalur perpipaan sistem pendingin tersebut agar nozel tidak menerima gaya yang berlebih. Penyangga pipa titik(node 22 di jalur PriOut dilepas dan/atau dipindahkan pada nozel masukkan pompa. Perpipaan sistem pendingin primer reaktor TRIGA 2000 Bandung akan aman beroperasi jika terjadi gempa.yang berasal dari patahan Lembang Kata kunci : gempa bumi, patahan, perpipaan, reaktor, sistem pendingin

  10. Návrh parního generátoru pro modulární reaktor

    OpenAIRE

    Černý, Marian

    2012-01-01

    Obsahem této diplomové práce je návrh parního generátoru pro modulární reaktor. Práce se skládá z rešeršní části, kde jsou popsané vybrané výměníky a parní generátory používané v jaderných zařízeních. Na rešerši navazuje část s teorií výpočtů v prvním přiblížení (tepelný, hydraulický a pevností výpočet). Následuje část návrhu konkrétních variant parního generátoru. Na autorem zvolenou variantu jsou provedeny výše uvedené výpočty a zhotovena výkresová dokumentace vybraných částí. Závěr této pr...

  11. Reactor for biological elimination of poorly degradable hydrocarbons by adjustment of substrate-specific retention times; Reaktor zur biologischen Eliminierung schwer abbaubarer Kohlenwasserstoffe durch Einstellung substratspezifischer Verweilzeiten

    Energy Technology Data Exchange (ETDEWEB)

    Brambach, R.

    1997-11-01

    Industrial waste water cleaning increasingly makes use of biological processes based on immobilized biomass, in order to ensure the aimed elimination of toxic substances. A novel, efficient reactor technique was developed, by which dangerous, poorly degradable dissolved hydrocarbons are selectively retained in the bioreactor thanks to an integrated membrane, while other substances are quickly discharged from the system via the effluent. With a synthetic waste water, this selective retention method achieved substrate-specific retention times which were five to fifty times higher than those of a merely hydrodynamically operated reactor system. In addition, the decoupling of high reactor and low effluent concentrations results in a higher biochemical activity in the reactor in comparison with conventional process techniques. (orig.) [Deutsch] In der industriellen Abwasserreinigung werden verstaerkt Bioverfahrenstechniken mit immobilisierter Biomasse eingesetzt, um eine gezielte Eliminierung gefaehrlicher Stoffe durchzufuehren. - Hierzu wurde eine neuartige leistungsfaehige Reaktortechnik entwickelt, die mittels einer im Bioreaktor integrierten Membran gefaehrliche, schwer abbaubare geloeste Kohlenwasserstoffe selektiv im Bioreaktor zurueckhaelt, waehrend andere Stoffe das System schnell ueber den Ablauf verlassen. Durch den stoffselektiven Rueckhalt wurden an einem synthetischen Abwasser substratspezifische Verweilzeiten erzielt, die um den Faktor 5 bis 50 ueber denen eines rein hydrodynamisch bestimmten Reaktorsystems liegen. Darueber hinaus wird aufgrund der Entkopplung von hoher Reaktor- und niedriger Ablaufkonzentration eine im Vergleich zu herkoemmlichen Verfahrenstechniken hoehere biochemische Aktivitaet im Reaktor erzielt. (orig.)

  12. PENJERAPAN GAS CO HASIL PEMBAKARAN SAMPAH MENGGUNAKAN SORBENT TERMODIFIKASI DALAM REAKTOR FIXED BED

    Directory of Open Access Journals (Sweden)

    Mariana Mariana

    2013-11-01

    Full Text Available ADSORPTION OF CO FROM WASTE COMBUSTION USING MODIFIED SORBENT IN A FIXED BED REACTOR. Gases produced by garbage burning consist of dangerous gases such as CO, SO2 and other gases. Technology for reducing dangerous gases from incinerator outlet can be done by using a dry or wet process. The dry process is more economical process because of simple process, easy maintenance and no liquid waste as product. However, the weakness of the dry process is low absorption conversion and low gas removal efficiency. One way to overcome these problems is to use sorbent which has high reactivity. An inexpensive sorbent that commonly used is Ca(OH2. The aim of this research was to increase the reactivity of Ca(OH2 sorbent by using diatomaceous earth and compost as a source of silica and biosorbent, respectively. Diatomaceous earth contains CaO, SiO2 and Al2O3 and compost contains bacteria as a biosorbent that can convert CO to CO2 and CH4. The reaction between SiO2 and Ca(OH2 would form calcium silicate hydrate (CaO.SiO2.2H2O that has a high porosity and reactivity. The results showed that the reactivity of Ca(OH2 sorbent increased by addition of diatomaceous earth and compost. The results also showed that the sorption of CO gas increases with increasing of height of sorbent bed and temperature. The highest CO gas sorption was obtained at temperature of 150oC and sorbent bed height of 6 cm using the modified sorbent with Ca(OH2/DE/compost ratio of 3:1:1. Gas hasil pembakaran sampah terdiri dari gas-gas yang berbahaya seperti CO, SO2 dan lain sebagainya. Teknologi penghilangan gas-gas tersebut dapat dilakukan dengan menggunakan proses kering maupun proses basah. Penghilangan dengan proses kering lebih ekonomis karena sederhana, mudah pemeliharaan dan tidak menghasilkan limbah cair. Namun demikian, kelemahan proses kering adalah konversi absorpsi rendah dan efisiensi penyisihan  gas relatif kecil. Salah satu cara mengatasi masalah tersebut di atas adalah dengan

  13. PERFORMA OKSIDASI METAN PADA REAKTOR KONTINYU DENGAN PENINGKATAN KETEBALAN LAPISAN BIOCOVER LANDFILL

    OpenAIRE

    Opy Kurniasari; Tri Padmi; Edwan Kardena; Enri Damanhuri

    2013-01-01

    PERFORMANCE OF METHANE OXIDATION IN CONTINUOUS REACTOR BY BIOCOVER LANDFILL FILM THICKNESS IMPROVEMENT. Municipal solid waste (MSW) handling in Indonesia is currently highly dependent on landfilling at the final disposal facility (TPA), which generally operated in layer-by-layer basis, allowing the anaerobic (absent of oxygen) process. This condition will certainly generate biogas in the form of methane (CH4) and CO2. Methane is a greenhouse gas with a global warming potential greater than CO...

  14. Pengaruh Variasi Perbandingan Udara-Bahan Bakar Terhadap Kualitas Api Pada Gasifikasi Reaktor Downdraft Dengan Suplai Biomass Serabut Kelapa Secara Kontinyu

    Directory of Open Access Journals (Sweden)

    Sholehul Hadi

    2013-12-01

    Full Text Available Salah satu bentuk energy alternatif adalah gasifikasi biomassa. Biomas yang digunakan adalah serabut kelapa muda karena jumlahnya melipah dan belum maksimal dimanfaatkan oleh masyarakat. Gasifikasi dari serabut kelapa dijadikan syn gas untuk bahan bakar terbarukan dan dapat diperbaharui. Dengan peralatan reactor gasifikasi dapat dihasilkan (Air Fuel Ratio terbaik untuk sistem pemasukan serabut kelapa kontinyu 0,5 kg/10 menit , melalui putaran dimmer pada sentrifugal blower diberikan 4 variabel yaitu 5, 7, 9, 10. Dan memvariasikan ukuran serabut kelapa 10-50 mm dan 50-100 mm. Hasil menunjukan untuk: zona pengeringan pada temperatur (T1 sampai 100ºC, zona pirolisispada temperatur (T2 sampai 350ºC, zona oksidasi parsialpada temperatur (T3 sampai 600ºC, zona reduksipada temperatur (T4 sampai 450ºC, indikator temperatur synthetic-gas pada temperatur (T5 sampai 120ºC dan Kandungan energi terbaik ditinjau dari LHV  syn-gas dihasilkan pada variasi AFR 1,06 untuk ukuran serabut kelapa 50-100 mm dengan efisiensireaktorgasifikasi sebesar 69,87 %. Pada variasi AFR tersebut dihasilkan komposisi flammable gas sebagai berikut : CO= 20,8%, H2 = 5,34%, dan CH4 = 4,5%.Untuk variasi ini prosentase kandungan syn-gas dan laju alir massa syn-gas selama proses memiliki komposisi yang tepat sehingga visualisasi nyala api yang dihasilkan terdapat warna biru dengan suhu 3530C.

  15. KINERJA KATALIS Ag/Al2O3 UNTUK REDUKSI NOx

    Directory of Open Access Journals (Sweden)

    Rakhman Sarwono

    2012-02-01

    Full Text Available NOx merupakan hasil samping dari suatu reaksi pembakaran. NOx merupakan gas yang beracun sangat berbahaya terhadap kesehatan manusia dan hewan bila terhirup pada waktu bernafas. Untuk mengurangi kadar NOx pada gas buang, banyak penelitian diarahkan pada reduksi NOx dengan katalis secara selektif dengan hidrokarbon dan oksigen berlebihan. Katalis yang digunakan adalah katalis alumina (Al2O3 yang didapat dari katalis komersial (AlO1-7 dan katalis hasil sintesa (ALOA. Katalis Ag/Al2O3 didapat dengan memasukkan logam Ag ke dalam alumina (Al2O3 dengan cara impregnasi dengan larutan perak nitrat. Katalis diuji aktifitasnya pada reaktor fixed bed yang diluarnya terdapat pemanas yang bisa diatur suhunya. Reaktan seperti gas NO, C2H4  dan oksigen dimasukkan kedalam reaktor dengan laju yang ditentukan. Hasil reaksi dianalisa dengan gas chromatography dan dicatat pada recorder, selanjutnya bisa ditentukan kuantitas dan prosentase konversinya. Katalis alumina  ALOA mempunyai kemampuan mereduksi NO dengan konversi  sekitar 40-45% gas NO menjadi N2. Loading logam perak (Ag kedalam Al2O3 sebesar 2-3% berat menambah daya reduksi NO menjadi sekitar 45-50% pada suhu 500oC. Pada umpan NO + C2H4  + O2  reaksi reduksi terjadi pada suhu 300oC, sedangkan pada umpan NO + C2H4   (tanpa oksigen reaksi reduksi baru terjadi pada suhu 450oC, dengan demikian adanya oksigen sangat berperan dalam proses reduksi NOx. Reaksi peruraian C2H4 menjadi COx berkebalikan dengan kinerja katalis pada proses reduksi NOx

  16. Progress in the development of uranium silicide (U3Si2) fuel at BATAN

    International Nuclear Information System (INIS)

    After successful fabrication of two full-size prototype fuel elements containing ∼3.0 gU/cm3 in the form of U3Si2-Al dispersion now undergoing irradiation in the Reaktor Serba Guna G.A. Siwabessy (RSG-GAS) core since 1990, further development in U3Si2-A2 dispersion fuel element manufacturing has been pursued, whose progress in discussed in this paper, with a special attention on the use of much higher-loading aimed at obtaining a better understanding on the influence of higher-loading on fuel core and plate manufacturing and quality. At present, high-loading U3Si2-AI dispersion miniplates are being manufactured for preparing some mini-fuel elements to be test-irradiated in the new MTR in-pile loop of the RSG-GAS. (author)

  17. Report on the interpretation of critical experiments in the Siemens-Argonaut-Reactor Graz to study water ingress into spherical elements. Ergebnisbericht zur Auslegung kritischer Experimente am Siemens-Argonaut-Reaktor Graz zum Studium des Wassereinbruches im Kugelhaufen

    Energy Technology Data Exchange (ETDEWEB)

    Schuerrer, F. (Technische Univ., Graz (Austria). Inst. fuer Theoretische Physik und Reaktorphysik); Neef, R.D. (Kernforschungsanlage Juelich G.m.b.H. (Germany, F.R.). Inst. fuer Reaktorentwicklung)

    1979-04-15

    The experiments described are of interest in the study of water contamination in HTR fuel elements. The Siemens Argonaut Reactor (SAR) has been considered as a research tool for a simulation experiment. Following a brief description of the SAR, planned programs are discussed in 'dry' and 'wet' cores. Detector foil types and locations are noted. A theoretical model is developed and nuclide concentrations estimated in the various spectral zones. Reactivity calculations have been made and are summarised for various H{sub 2}O percentage concentrations. The discussion is supported by simplified core layout diagrams and graphs of core flux distributions. Neutron diffusion and spectra calculations are referenced to computer programs used by KFA-Juelich, published elsewhere, and include GAM, THERMOS, MUPO and EXTERMINATOR-2. (G.C.)

  18. PEMBUATAN BAHAN BAKU SPREADS KAYA KAROTEN DARI MINYAK SAWIT MERAH MELALUI INTERESTERIFIKASI ENZIMATIK MENGGUNAKAN REAKTOR BATCH [Preparation of Red Palm Oil Based-Spreads Stock Rich in Carotene Through Enzymatic Interesterification in Batch-type Reactor

    Directory of Open Access Journals (Sweden)

    Nur Wulandari1,2

    2012-12-01

    Full Text Available Enzymatic interesterification of red palm oil (a mixture of red palm olein/RPO and red palm stearin/RPS in 1:1 weight ratio and coconut oil (CNO blends of varying proportions using a non-specific immobilized Candida antartica lipase (Novozyme 435 was studied for the preparation of spread stock. The interesterification reaction was held in a batch-type reactor. Two substrate blends were chosen for the production of spread stock i.e. 77.5:22,5 and 82.5:17.5 (RPO/RPS:CNO, by weight through enzymatic interesterification in three different reaction times (2, 4, and 6 hours. The interesterification reactions were conducted at 60°C, 200 rpm agitation speed and 10% of Novozyme 435. The interesterified products were evaluated for their physical characteristics (slip melting point or SMP and solid fat content or SFC and chemical characteristics (carotene retention, moisture content, and free fatty acid/FFA content. All of the interesterified products had lower SFC and SMP as compared to the initial blends. The SMP and SFC increased in longer reaction times. The SMP ranged from 30.8°C to 34.9°C. The carotene retention ranged from 74.80% to 81.08%, while the moisture content and FFA content increased in longer reaction times. The interesterified products had desirable physical properties for possible use as a spread stock rich in carotene.

  19. Pengaruh Aerasi dan Sumber Nutrien terhadap Kemampuan Alga Filum Chlorophyta dalam Menyerap Karbon (Carbon Sink untuk Mengurangi Emisi CO2 di Kawasan Perkotaan

    Directory of Open Access Journals (Sweden)

    Lancur Setoaji

    2013-09-01

    Full Text Available Penelitian terkait mitigasi pemanasan global, khususnya dalam penyerapan karbon dioksida (CO2, menjadi fokus utama di kalangan ilmuwan dunia. Secara alamiah, karbon dioksida dapat diserap oleh tumbuhan hijau, laut, karbonasi batuan kapur, dan alga. Pigmen hijau dalam alga atau klorofil dapat menyerap karbon dioksida dalam proses fotosintesis. Alga memiliki pertumbuhan yang sangat cepat sehingga cocok digunakan sebagai carbon sink. Penelitian terkait carbon sink ini bertujuan untuk menentukan kemampuan rata-rata serapan CO2 oleh alga di kawasan perkotaan dan menentukan pengaruh aerasi dan variasi sumber N terhadap pertumbuhan dan perkembangan alga. Penelitian ini dilakukan dalam skala laboratorium menggunakan reaktor dengan proses batch. Sampel alga yang digunakan didapatkan dari hasil pengembangbiakan yang bersumber dari perairan di kawasan perkotaan. Penelitian ini menggunakan dua variabel uji, yaitu aerasi dan sumber nutrien. Jumlah karbon dioksida yang diserap didapatkan dari perbandingan stoikiometri pada reaksi fotosintesis.  Berdasarkan perbandingan stoikiometri tersebut diketahui bahwa 1 gram sel alga yang terbentuk sebanding dengan 1,92 gram CO2 yang diserap. Dari hasil penelitian, alga dengan penambahan pupuk urea dapat menyerap 4,87 mg CO2/hari dalam kondisi tanpa aerasi atau 3,84 mg CO2/hari dengan aerasi. Sedangkan alga dengan penambahan pupuk NPK dapat menyerap 3,61 mg CO2/hari dalam kondisi tanpa aerasi atau 3,01 mg CO2/hari dengan aerasi.

  20. Earthquake experiments at the HDR (Heissdampf Reaktor) test facility using an eccentric mass vibrator

    International Nuclear Information System (INIS)

    As part of he earthquake investigations carried out by the Karlsruhe Nuclear Research Center, Project HDR, at the HDR Test Facility near Frankfurt/Main, high level shaker test were performed during June/July 1986. The purpose of these tests, supported by the German and U.S. governments was to investigate full scale structural response involving significant concrete and soil strain as well as strong indirect excitation of vessels, pipes and other mechanical equipment. The calculational efforts included predictions of the building and piping response stress analyses. Within these test series, the reactor building was brought to its ultimate loading capacity. (author)

  1. Parogenerátory tlakovodních reaktorů

    OpenAIRE

    Michalica, Martin

    2015-01-01

    Tato bakalářská práce se zabývá popisem jednotlivých konstrukčních řešení parogenerátorů. V první části bakalářské práce je popsán počátek jaderného průmyslu v Rusku. Samostatná práce se věnuje jednotlivým konstrukčním řešením. Poslední kapitola detailně popisuje jednotlivé části parogenerátoru VVER 1000. Součástí práce je tvorba 3D modelu parogenerátoru VVER 1000, který bude sloužit jako učební pomůcka v projektu Cenelín. This bachelors thesis describes various designs of steam generators...

  2. Theory of nuclear reactors. Vol. 1. Theorie der Kernreaktoren. Bd. 1. Der stationaere Reaktor

    Energy Technology Data Exchange (ETDEWEB)

    Emendoerfer, D.; Hoecker, K.H.

    1982-01-01

    An introduction is given to the elements of reactor physics and reactor calculation which refers to practice from the present point of view. It is demonstrated to the reader how the reactor characteristics relevant to construction can be calculated from atomic factors by means of neutron transport and diffusion theory; these reactor characteristics are: multiplication factor, power density distribution, burn-up, plutonium build-up, xenon vibrations, short-time behaviour. The interaction between thermo- and fluid-dynamic processes is important for this calculation. On grounds of didactics the crucial point of this book is the establishment and calculation of simple models which give a clear description of all important characteristics of the events. Attempts for more exact simulation by computer are dealt with including typical solutions.

  3. UNJUK KERJA REAKTOR PLASMA DIELECTRIC BARRIER DISCHARGE UNTUK PRODUKSI BIODIESEL DARI MINYAK KELAPA SAWIT

    Directory of Open Access Journals (Sweden)

    Ardian Dwi Yudhistira

    2013-10-01

    Full Text Available Biodiesel is one of alternative renewable energy source to substitute diesel fuel. Various biodiesel productionprocesses through transesterification reaction with a variety of catalysts have been developed by previousresearcher. This process still has the disadvantage of a long reaction time, and high energy need. DielectricBarrier Discharge (DBD plasma electro-catalysis may become a solution to overcome the drawbacks in theconventional transesterification process. This process only needs a short time reaction and low energy process.The purpose of this study was to assess the performance of DBD plasma rector in making biodiesel such as: theeffect of high voltage electric value, electrodes gap, mole ratio of methanol / oil, and reaction time. TheResearch method was using GC-MS (Gas Cromatography-Mass Spectrofotometry and FTIR (FourierTransform Infrared Spectrofotometry and then it will be analysed the change of chemical bond betweenreactant and product. So, the reaction mechanism can be predicted. Biodiesel is produced using methanol andpalm oil as reactants and DBD plasma used as reactor in batch system. Then, reactants contacted by highvoltage electric. From the results of this research can be concluded that the reaction mechanism occurs in theprocess is the reaction mechanism of cracking, the higher of electric voltage and the longer of reaction time leadto increasing of product yield. The more of mole ratio of methanol / oil and widening the gap between theelectrodes lead to decreased product yield. From this research, product yield maksimum is 89,8% in the variableof rasio mol metanol/palm oil 3:1, voltage 10 kV, electrode gap 1,5 cm, and reaction time 30 seconds.

  4. UNJUK KERJA REAKTOR PLASMA DIELECTRIC BARRIER DISCHARGE UNTUK PRODUKSI BIODIESEL DARI MINYAK KELAPA SAWIT

    OpenAIRE

    Ardian Dwi Yudhistira; Istadi Istadi

    2013-01-01

    Biodiesel is one of alternative renewable energy source to substitute diesel fuel. Various biodiesel productionprocesses through transesterification reaction with a variety of catalysts have been developed by previousresearcher. This process still has the disadvantage of a long reaction time, and high energy need. DielectricBarrier Discharge (DBD) plasma electro-catalysis may become a solution to overcome the drawbacks in theconventional transesterification process. This process only needs a ...

  5. PENGARUH GEMPA PATAHAN LEMBANG TERHADAP FLEKSIBILITAS PIPA DAN KEGAGALAN NOZEL PERALATAN SISTEM PENDINGIN PRIMER REAKTOR TRIGA 2000 BANDUNG

    OpenAIRE

    H.P. Raharjo

    2012-01-01

    Gempa bumi di suatu instalasi nuklir dapat menyebabkan terjadinya kerusakan sistem peralatan karena adanya perubahan fleksibilitas pipa akibat beban berlebih pada sistem perpipaannya. Beban dari sistem perpipaan dapat membebani nozel peralatan seperti pompa, penukar panas, dll. Apabila beban tersebut terlalu besar dan melebihi beban yang diizinkan akan mengakibatkan kegagalan nozel peralatan. Penelitian ini menganalisis besarnya beban-beban yang terjadi di semua nozel  sistem pendingin prime...

  6. PENGGUNAAN MEMBRAN SERAT BERONGGA SEBAGAI AERATOR DALAM SISTEM KULTIVASI UNTUK MENINGKATKAN PRODUKSI BIOMASSA DAN BIOFIKSASI CO2 DARI Chlorella vulgaris

    Directory of Open Access Journals (Sweden)

    D Dianursanti

    2015-06-01

    Full Text Available Pemanasan global yang memicu terjadinya perubahan iklim, sebagian besar disebabkan karena merebaknya gas CO2.  Pemanfaatan mikroalga Chlorella sp. untuk mereduksi gas CO2 menjadi potensi yang menjanjikan. Hal ini mengingat, bahwa Chlorella dapat dengan efisien mereduksi CO2 karena mereka dapat tumbuh dengan cepat dan mudah diadaptasikan ke dalam rekayasa sistem fotobioreaktor. Dalam penelitian ini akan diupayakan pengaturan sistem aerasi berfilter untuk kultivasi Chlorella vulgaris dalam reaktor agar proses transfer massa gas CO2 dalam kultur mikroalga menjadi lebih baik. Dengan demikian nilai KLa (CO2 menjadi salah satu parameter penentu dalam peningkatan produksi biomassa Chlorella. Nilai KLa yang tinggi menunjukkan proses transfer massa CO2 yang lebih baik dalam kultur mikroalga. Namun nilai KLa (CO2 yang terlalu besar sangat mungkin menyebabkan terjadinya shear stress pada alga.Dengan menggunakan membran serat berongga sebagai aerator, permasalahan shear stress pada alga dapat dihindari. Dengan diameter pori yang sangat kecil, membran ini dapat memberikan laju alir dan transfer massa CO2 dalam kultur yang optimal, tanpa menimbulkan efek shear strees. Dengan demikian penggunaan membran ini dapat menghasilkan produktivitas Chlorella yang lebih baik serta dapat meningkatkan kemampuan biofiksasi CO2 selama proses kultivasinya. Penggunaan membran serat berongga sebagai aerator telah terbukti mampu meningkatkan produksi biomassa C. vulgaris  sebesar 27,2 %. Abstract Global warming triggering climate change is largely due to the presence of CO2. Utilization of microalgae Chlorella vulgaris to reduce CO2 gas is potential as it efficiently reduces CO2while growing quickly and adapting to the photobioreactor systems engineering. This study explored filter aeration system settings for cultivating C. vulgaris in the reactor thus mass transfer of CO2 in microalgae cultures becomes more efficient. Value of KLa (CO2 is one of the parameters in

  7. KARAKTERISASI DAN AKTIVITAS KATALITIK BERBAGAI VARIASI KOMPOSISI KATALIS Ni DAN ZnBr2 DALAM Γ-Al2O3 UNTUK ISOMERISASI DAN HIDROGENASI (R-(+-SITRONELAL

    Directory of Open Access Journals (Sweden)

    ED Iftitah

    2014-06-01

    Full Text Available Pengaruh sifat dan karakter berbagai variasi komposisi katalis Ni dan ZnBr2 yang terimpregnasi dalam γ-Al2O3 terhadap aktivitas dan selektivitasnya untuk reaksi isomerisasi dan hidrogenasi (R-(+-Sitronelal telah dilakukan. Dalam penelitian ini, terdapat tiga jenis variasi komposisi Ni dan ZnBr2 dalam γ-Al2O3, yaitu: A1=Ni/ZnBr2/γ-Al2O3 (3:2, A2=Ni/ZnBr2/γ-Al2O3 (1:1 dan A3=Ni/ZnBr2/γ-Al2O3 (2:3. Katalis dikarakterisasi menggunakan X-ray diffraction (XRD, Brunauer-Emmett-Teller (BET surface area, dan SEM-EELS. Luas area permukaan spesifik dan porositasnya ditentukan berdasarkan adsorption-desorption gas nitrogen pada 77 K. Distribusi dan volume pori ditentukan dengan desorption isotherm pada P/Po ≥ 0,3. Hasil yang didapat menunjukkan bahwa terdapat hubungan antara karakter dan sifat katalis dengan aktivitas katalitiknya terhadap produk isomerisasi dan hidrogenasi (R-(+-Sitronelal. Uji aktivitas dilakukan dalam sebuah reaktor mini dengan 0,5 g katalis dan 3 mL (R-(+-Sitronelal menggunakan atmosfir gas N2 dan/atau H2 dalam waktu 5 dan 24 jam masing-masing pada suhu 90 dan 120 °C. Komposisi katalis, pemilihan jenis atmosfir gas dan suhu sangat berpengaruh terhadap aktivitas dan selektivitas pembentukan produk isomerisasi dan hidrogenasi. Konversi (R-(+-Sitronelal tertinggi ditunjukkan oleh katalis A3=Ni/ZnBr2/γ-Al2O3 (2:3 dengan kondisi reaksi selama 5 jam (4 jam N2 + 1 jam H2 pada suhu 90 °C dan 24 jam (4 jam N2 + 20 jam H2 pada suhu 120 °C. The influence of catalyst properties and characteristics of Ni and ZnBr2 catalysts impregnated in γ-Al2O3 on the activity and selectivity of (R-(+-Citronellal isomerisation and hydrogenation has been done. In this study, there were three sets of Ni and ZnBr2 in γ-Al2O3 with various composition, they were A1=Ni/ZnBr2/γ-Al2O3 (3:2, A2=Ni/ZnBr2/γ-Al2O3 (1:1, A3=Ni/ZnBr2/γ-Al2O3 (2:3. The catalysts were characterized using X-ray diffraction (XRD, Brunauer-Emmett-Teller (BET surface area and SEM

  8. $2\

    CERN Document Server

    Agostini, M; Bakalyarov, A M; Balata, M; Barabanov, I; Barros, N; Baudis, L; Bauer, C; Becerici-Schmidt, N; Bellotti, E; Belogurov, S; Belyaev, S T; Benato, G; Bettini, A; Bezrukov, L; Bode, T; Borowicz, D; Brudanin, V; Brugnera, R; Budjáš, D; Caldwell, A; Cattadori, C; Chernogorov, A; D'Andrea, V; Demidova, E V; di Vacri, A; Domula, A; Doroshkevich, E; Egorov, V; Falkenstein, R; Fedorova, O; Freund, K; Frodyma, N; Gangapshev, A; Garfagnini, A; Gooch, C; Grabmayr, P; Gurentsov, V; Gusev, K; Hegai, A; Heisel, M; Hemmer, S; Heusser, G; Hofmann, W; Hult, M; Inzhechik, L V; Csáthy, J Janicskó; Jochum, J; Junker, M; Kazalov, V; Kihm, T; Kirpichnikov, I V; Kirsch, A; Klimenko, A; Knöpfle, K T; Kochetov, O; Kornoukhov, V N; Kuzminov, V V; Laubenstein, M; Lazzaro, A; Lebedev, V I; Lehnert, B; Liao, H Y; Lindner, M; Lippi, I; Lubashevskiy, A; Lubsandorzhiev, B; Lutter, G; Macolino, C; Majorovits, B; Maneschg, W; Medinaceli, E; Mi, Y; Misiaszek, M; Moseev, P; Nemchenok, I; Palioselitis, D; Panas, K; Pandola, L; Pelczar, K; Pullia, A; Riboldi, S; Rumyantseva, N; Sada, C; Salathe, M; Schmitt, C; Schneider, B; Schreiner, J; Schulz, O; Schwingenheuer, B; Schönert, S; Schütz, A-K; Selivanenko, O; Shirchenko, M; Simgen, H; Smolnikov, A; Stanco, L; Stepaniuk, M; Ur, C A; Vanhoefer, L; Vasenko, A A; Veresnikova, A; von Sturm, K; Wagner, V; Walter, M; Wegmann, A; Wester, T; Wilsenach, H; Wojcik, M; Yanovich, E; Zavarise, P; Zhitnikov, I; Zhukov, S V; Zinatulina, D; Zuber, K; Zuzel, G

    2015-01-01

    Two neutrino double beta decay of $^{76}$Ge to excited states of $^{76}$Se has been studied using data from Phase I of the GERDA experiment. An array composed of up to 14 germanium detectors including detectors that have been isotopically enriched in $^{76}$Ge was deployed in liquid argon. The analysis of various possible transitions to excited final states is based on coincidence events between pairs of detectors where a de-excitation $\\gamma$ ray is detected in one detector and the two electrons in the other. No signal has been observed and an event counting profile likelihood analysis has been used to determine Frequentist 90\\,\\% C.L. bounds for three transitions: ${0^+_{\\rm g.s.}-2^+_1}$: $T^{2\

  9. Proses Pembuatan Biodiesel dari Palm Fatty Acid Distillate (PFAD) dan Dimethyl Carbonate dengan Reaktor Packed Bed Menggunakan Katalis Novozym® 435

    OpenAIRE

    Senjaya, Johan

    2016-01-01

    Palm Fatty Acid Distillate (PFAD) is a byproduct produced in the refining process in the palm oil that could potentially be a raw material in the manufacturing process of biodiesel and the price is much cheaper than virgin oil. The purpose of this study was to utilize PFAD in the manufacture of biodiesel by using Dimethyl Carbonate (DMC) as the reactant and Novozym® 435 as a catalyst. The production of biodiesel is done in two ways which are batch and continuous. For batch, PFA...

  10. The Siemens-Argonaut reactor as a driver zone for a high-temperature reactor cell. Der Siemens-Argonaut-Reaktor als Treiberzone fuer eine Hochtemperaturreaktorzelle

    Energy Technology Data Exchange (ETDEWEB)

    Mueller, H.; Schuerrer, F.; Ninaus, W.; Oswald, K.; Rabitsch, H.; Kreiner, H. (Technische Univ., Graz (Austria). Inst. fuer Theoretische Physik und Reaktorphysik); Neef, R.D. (Kernforschungsanlage Juelich G.m.b.H. (Germany, F.R.). Inst. fuer Reaktorentwicklung)

    1984-12-15

    To enable a validation of neutron physics calculation methods for pebble bed reactors the inner reflector of an Argonaut research reactor was substituted by a full of about 1200 fuel elements of the AVR-Juelich type. The report describes the measuring instruments and the reactor physical layout of the arrangement by the code packages GAMTEREX, ZUT-D.G.L. and MUPO. Comparison of calculated reaction rates with measurements show good agreement. Application of the codes to high-temperature reactors in abnormal states is envisaged. (Author, translated by G.Q.)

  11. Svar til: Hvorfor bryder robotter sammen i Tjernobyl-reaktor? (Ingeniøren, lørdag d. 17 nov. 2007)

    DEFF Research Database (Denmark)

    Morgen, Per

    2007-01-01

    Symposium 'Image Engineering and Vision Metrology'. Det er kendt af folk, der beskæftiger sig med mikroelektronik, at computerchips og hukommelseskredse kan blive sat ud af spillet, når de bliver udsat for radioaktivitet, og derfor vil også en computerstyret robot være sårbar overfor dette. Radioaktiv...... fra Århus Universitet, af N. Bassler: Radiation damage in scientific chargecoupled devices. Master's Thesis, Institute of Physics and Astronomy, University of Aarhus, Aarhus, Denmark (fra 2002). Konlusionen af deres undersøgelser er, at radioaktiv stråling (de undersøger gammastråling, som der må...

  12. The vegetation as sink and biochemical reactor for airborne pollutants. Final report; Die Vegetation als Senke und biochemischer Reaktor fuer luftgetragene Schadstoffe. Abschlussbericht

    Energy Technology Data Exchange (ETDEWEB)

    Weissflog, L.; Wenzel, K.D. [UFZ - Umweltforschungszentrum Leipzig-Halle GmbH, Leipzig (Germany). Sektion Chemische Oekotoxikologie

    1997-06-30

    The present project involved extensive studies on the air pollution situation and interactions between organic as well as inorganic air pollutant levels and the vegetation in three east German states. Seven monitoring sites with different emission profiles were selected in Saxony-Anhalt, one typically polluted site in Saxony, and two less polluted sites in Mecklenburg-Western Pomerania. The following emitter types were found to exhibit consistent pollutant patterns: landfills receiving chloroorganic special wastes; hard-coal-fuelled firing installations; commercial charcoal plants; industry; industry - car traffic - domestic fuel combustion; car traffic. [Deutsch] Im Verlauf der Projektarbeiten wurden an sieben durch unterschiedliche Emittententypen belasteten Standorten in Sachsen-Anhalt, einem typisch belasteten Standort in Sachsen und an zwei weniger belasteten Standorten in Mecklenburg/Vorpommern umfangreiche Untersuchungen zur Immissionssituation und der Wechselwirkung der luftgetragenen anorganischen und organischen Schadstofffracht mit der Vegetation durchgefuehrt. Dabei konnten fuer folgende Emittenten charakteristische Schadstoffmuster ermittelt werden: - Deponien mit chlororganischem Sondermuell - Feuerungsanlagen fuer Steinkohle - Gewerbliche Anlagen zur Herstellung von Holzkohle - Industrie - Industrie/Kfz-Verkehr/Hausbrand - Kfz-Verkehr. (orig.)

  13. Pengaruh Rasio Udara Pembakaran Antara Udara Primer Dan Sekunder Terhadap Efisiensi Pembakaran Serat Buah Sawit Pada Reaktor Pembakaran Fixed-Bed

    OpenAIRE

    Yudanto, Bagus Giri

    2012-01-01

    Study of the oil palm fiber (mesocarp) combustion process in the laboratory scale has been conducting. The purpose of this research was to known the effect of various combustion air ratio between primary air (PA) and secondary air (SA) to combustion qualities of mesocarp. The ratio of combustion air (PA:SA) were variated at (20:80), (35:65), (50:50), (65:35) and (80:20). The research experimental was conducted using by a fixed bed reactor. The Controlling of combustion air flow rate using by ...

  14. Pra Desain Pabrik Sorbitol dari Tepung Tapioka dengan Hidrogenasi Katalitik

    Directory of Open Access Journals (Sweden)

    Hellen Kartika Dewi

    2014-03-01

    Full Text Available Sorbitol yang dikenal juga sebagai glusitol, adalah suatu gula alkohol yang dimetabolisme lambat di dalam tubuh. Sorbitol banyak digunakan sebagai bahan baku untuk industri barang konsumsi dan makanan seperti pasta gigi, permen, kosmetika, farmasi, vitamin C, termasuk industri tekstil dan kulit. Pembuatan sorbitol dari bahan baku tepung tapioka. Pabrik sorbitol ini direncanakan akan didirikan di Propinsi Jawa Tengah tepatnya di Kabupaten Batang dengan kapasitas produksi 30.000 ton/tahun. Proses produksi Sorbitol menggunakan proses hidrogenasi katalitik. Pembuatan sorbitol dari bahan baku pati melalui dua tahap proses utama yaitu proses perubahan starch menjadi glukosa melalui hidrolisa double enzym. Enzim yang digunakan yaitu α-amylase dan glukoamylase. Proses hidrogenasi katalitik dilakukan dengan mereaksikan larutan dekstrose dan gas hidrogen bertekanan tinggi dengan menambahkan katalis nikel dalam reaktor (Reaktor Hidrogenasi. Gas hidrogen masuk dari bawah reaktor secara bubbling dan larutan dekstrose diumpankan dari atas reaktor sehingga kontak yang terjadi semakin baik. Sorbitol yang di hasilkan dalam pradesain pabrik sorbitol ini dengan konsentrasi 58,2%. Pendirian pabrik sorbitol memerlukan biaya investasi modal tetap (fixed capital sebesar Rp 168.801.192.952, modal kerja (working capital  Rp 29.788.445.815, investasi total Rp 198.589.638.767, Biaya produksi per tahun Rp 368.832.813.809 dan  hasil penjualan per tahun Rp 540.000.078.750. Dari analisa ekonomi didapatkan BEP sebesar 26,32%. ROI sesudah pajak 48,5 %, POT sesudah pajak 2,14 tahun. Dari segi teknis dan ekonomis, pabrik ini layak untuk didirikan.

  15. Development of a continuous process for microbial elimination of 1,2 dichloropropane in contaminated water; Entwicklung eines kontinuierlichen Verfahrens zur mikrobiellen Elimination von 1,2-Dichlorpropan in kontaminierten Waessern

    Energy Technology Data Exchange (ETDEWEB)

    Hauck, R.

    2000-07-01

    methanogenes and sulfate reducing bacteria resulted in a slower but continued DCP degradation. Due to these results molecular hydrogen was spiked to the reactor whereby an increase of DCP degradation could be achieved. The applied culture showed a high dechlorination potential towards different aliphatic and aromatic chloroorganics, so that an application of the presented technique for groundwater treatment is principally suitable. (orig.) [German] Fuer die Untersuchungen zum biologischen Abbau von 1,2-Dichlorpropan (DCP) wurden sowohl aerobe als auch anaerobe batch- und kontinuierliche Reaktorversuche mit Mischkulturen durchgefuehrt. Fuer die aeroben Versuche wurde eine Mischkultur aus einem mit chlororganischen Stoffen belasteten Grundwasser angereichert und batch-Versuche zur Bestimmung der Cosubstratbeduerfnisse durchgefuehrt. Hierbei konnte jedoch kein wiederholter DCP-Abbau etabliert werden. Fuer die Realisierung des anaeroben DCP-Abbaus wurde eine Mischkultur aus Sedimenten der Saale angereichert. Im sedimenthaltigen batch-Versuch wurde die quantitative Bildung von Propen ermittelt, wobei auch geringe Mengen 1- und 2-Monochlorpropan waehrend des Abbaus nachgewiesen werden konnten. Die Mischkultur aus der Saale wurde auf Polyurethanschaumstoff-Wuerfel immobilisiert und in einem kontinuierlichen Wirbelbettreaktor etabliert. In batch- und Reaktorversuchen wurden unterschiedliche Elektronendonoren eingesetzt, wobei sich Methanol mit einer maximalen DCP-Eliminationsrate von 65 mg/(l x d) als das den Abbau am besten unterstuetzende Einzelsubstrat erwies. Die maximal im Reaktor erreichbaren Eliminationsraten von 90 mg/(l x d) bei einer Verweilzeit von 24 h und DCP-Zulaufkonzentrationen von 100 mg/l wurden mit einer Elektronendonorkombination aus Methanol und Acetat erzielt. Die Charakterisierung der Population durch molekularbiologische Analysen ergab, dass sich im Laufe des Reaktorbetriebs eine Spezies mit hoher 16S rRNA-Sequenzhomologie zu Dehalobacter restricuts in der

  16. Official announcement of recommendations issued by the RSK (Reactor Safety Commission) and the SSK (Radiation Protection Commission). As of 11 October 1994; Bekanntmachung von Empfehlungen der Reaktor-Sicherheitskommission und der Strahlenschutzkommission. Vom 11. Oktober 1994

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1994-12-23

    The RSK and the SSK have found satisfactory evidence that the planned surface and underground facilities and equipment of the repository fulfill the safety requirements given, and that the planned operations for emplacement and storage can be performed with due safety. RSK and SSK put emphasis on the fact that the specific types and volumes of the radioactive wastes envisaged for storage at this site will not create a hazardous situation at any place of the entire repository as a result of temperatures, pressures or radioactivity concentrations developing during emplacement or storage, so that the repository`s hazardous potential is assessed to be very low, both in the operational phase and during the post-sealing phase. The RSK and SSK approve of the submitted safety concept for specified normal operation, as well as the submitted regime of preventive measures for protection from accidents, and the results of the accident analyses performed. Engineered and other radiation protection measures provided for specified normal operation are found to guarantee protection of the personnel, the local population and the environment. Calculated radiation doses are below the limits given in section 44, sub-section 1, and sections 45 and 49 of the Radiation Protection Ordinance (StrlSchV). The calculations submitted for emergency-induced radioactivity levels show compliance with the maximum acceptable doses laid down in section 28, sub-sec. 3 StrlSchV. The review of data submitted concerning the longterm safety of the site and the calculation approaches for determining individual doses by way of model calculations for radionuclide migration from the storage site to the biosphere are approved of by the commissions, who found evidence that the waste stored will not create hazardous radiation levels in a post-sealing operation phase extending over a period of 10.000 years. (orig./HP) [Deutsch] RSK und die SSK haben sich davon ueberzeugt, dass alle geplanten ueber- und untertaegigen Anlagen und Einrichtungen des Endlagers den sicherheitstechnischen Anforderungen entsprechen. Der geplante Einlagerungsbetrieb kann sicher durchgefuehrt werden. RSK und SSK weisen darauf hin, dass im gesamten Endlager Konrad auf Grund der spezifischen Abfalleigenschaften und der Menge an radioaktiven Abfaellen weder hohe Temperaturen oder Druecke noch hohe Aktivitaetskonzentrationen auftreten. Aus diesen Gruenden schaetzen sie das Gefaehrdungspotential des Endlagers in der Betriebs- und in der Nachbetriebsphase als sehr niedrig ein. Die RSK und die SSK akzeptieren das vorgestellte Sicherheitskonzept im bestimmungsgemaessen Betrieb sowie die getroffenen Vorsorgemassnahmen gegen Stoerfaelle und die Ergebnisse der Stoerfallanalysen. Der Strahlenschutz des Personals, der Bevoelkerung und der Umwelt ist im bestimmungsgemaessen Betrieb gewaehrleistet. Die berechneten Strahlenexpositionen liegen jeweils unter den in Paragraph 44 Abs. 1, Paragraph 45 und Paragraph 49 StrlSchV festgelegten Grenzwerten. Die Stoerfallplanungswerte gemaess Paragraph 28 Abs. 3 StrlSchV koennen eingehalten werden. Die Beratungen zur Langzeitsicherheit haben keine Einwaende gegen die Vorgehensweise zur Ermittlung der Individualdosen mittels Modellrechnungen zur Radionuklidausbreitung von der Endlagerformation bis in die Biosphaere ergeben. RSK und SSK sehen den Nachweis als erbracht an, dass in der Nachbetriebsphase im Zeitraum von ca. 10000 Jahren keine endlagerbedingte Strahlenexposition auftritt. (orig./HP)

  17. The development of fast reactors - Effects on the Swedish system of management of spent fuel; Utveckling av snabba reaktorer - Paaverkan paa det svenska systemet foer hantering av anvaent braensle

    Energy Technology Data Exchange (ETDEWEB)

    Hans Forsstroem, Hans [SKB International AB, Stockholm (Sweden)

    2013-09-15

    Since the start of the nuclear power era studies have been performed of how to utilise the uranium energy resource in the most effective way. Only about one percent of the energy potential of uranium is utilised in the light water reactors of today. To improve the utilization other types of reactors are needed. With fast reactors theoretically 50-100 times more energy can be extracted from the uranium. This will require reprocessing of the uranium and multiple recycling of the plutonium. Plutonium and uranium can also be recycled in light water reactors, but this will only improve the uranium utilisation by about 20 %. Recycling of plutonium on a routine basis is presently only done in France. The development of fast reactors has been going on since the end of the 1940ies. During the 1970ies the planning was that a large number of fast reactors and their associated fuel cycle facilities would be in operation by the year 2000. The development has, however, for different reasons been much slower than planned. The general assessment today is that fast reactor, if they will be realised, will hardly give an important contribution to energy production until after 2050. Nuclear power production has instead been dominated by light water reactors similar to the ones in use in Sweden. Light water reactors are believed to continue to dominate during the next decades. To start a fast reactor system plutonium (or highly enriched uranium) will be needed. Such plutonium is contained in spent nuclear fuel from light water reactors. This raises the question: Should the spent nuclear fuel be stored so that the potential energy resource in the fuel can be used in the future instead of disposing of it as a waste? The answer to this question will depend on when the material will be useful, i.e. when fast reactors have been introduced on a large scale. It will also depend on the demand for plutonium at this time, i.e. will plutonium be a scarce redundant resource at this point of time. In this context it should be considered that fast reactors will generate their own plutonium, as breeder reactors. Plutonium from other reactors will thus only be needed for the first years of operation. To provide a basis for the answer to the question if the Swedish spent fuel is a resource or a waste this report provides an overview of the present development status for fast reactors and their potential for large scale commercial use. It further describes the impact on the Swedish system for management of spent nuclear fuel if the fuel were to be reprocessed and the uranium and plutonium reused as fuel for fast reactors or for the present reactors.

  18. NPP Grafenrheinfeld. No thank you. Questions and answers concerning the oldest operating crack susceptible reactor in the federal republic; AKW Grafenrheinfeld. Nein danke. Fragen und Antworten zum aeltesten noch laufenden und rissanfaelligsten Reaktor der Republik

    Energy Technology Data Exchange (ETDEWEB)

    Darge, Tobias

    2014-03-15

    The brochure discusses questions on the NPP Grafenrheinfeld. concerning the following issues: reactor type, operating company, nuclear fuel, licensing, radioactive waste management, susceptibility to damage, stress test results, critical arguments concerning the reactor pressure vessel steel and the containment, cracks in the primary circuit, safety in case of an aircraft crash, possibility of a severe accident, consequences of a severe accident, medical emergency plan, public information for an emergency case, shutdown at the end of 2015, necessity of a new power plant for energy security?.

  19. Development of a methodology for safety classification on a non-reactor nuclear facility illustrated using an specific example; Entwicklung einer Methodik zur Sicherheitsklassifizierung fuer eine kerntechnische Anlage ohne Reaktor an einem spezifischen Beispiel

    Energy Technology Data Exchange (ETDEWEB)

    Scheuermann, F.; Lehradt, O.; Traichel, A. [NUKEM Technologies Engineering Services GmbH, Alzenau (Germany)

    2015-07-01

    To realize the safety of personnel and environment systems and components of nuclear facilities are classified according to their potential danger into safety classes. Based on this classification different demands on the manufacturing quality result. The objective of this work is to present the standardized method developed by NUKEM Technologies Engineering Services for the categorization into the safety classes restricted to Non-reactor nuclear facilities (NRNF). Exemplary the methodology is used on the complex Russian normative system (four safety classes). For NRNF only the lower two safety classes are relevant. The classification into the lowest safety class 4 is accordingly if the maximum resulting dose following from clean-up actions in case of incidents/accidents remains below 20 mSv and the volume activity restrictions of set in NRB-99/2009 are met. The methodology is illustrated using an example. In short the methodology consists of: - Determination of the working time to remove consequences of incidents, - Calculation of the dose resulting from direct radiation and due to inhalation during these works. The application of this methodology avoids over-conservative approaches. As a result some previously higher classified equipment can be classified into the lower safety class.

  20. STUDI PEMODELAN DAN PERHITUNGAN TRANSPORT MONTE CARLO DALAM TERAS HTR PEBBLE BED

    Directory of Open Access Journals (Sweden)

    Zuhair .

    2013-01-01

    Full Text Available Konsep sistem energi VHTR baik yang berbahan bakar pebble (VHTR pebble bed maupun blok prismatik (VHTR prismatik menarik perhatian fisikawan reaktor nuklir. Salah satu kelebihan teknologi bahan bakar bola adalah menawarkan terobosan teknologi pengisian bahan bakar tanpa harus menghentikan produksi listrik. Selain itu, partikel bahan bakar pebble dengan kernel uranium oksida (UO2 atau uranium oksikarbida (UCO yang dibalut TRISO dan pelapisan silikon karbida (SiC dianggap sebagai opsi utama dengan pertimbangan performa tinggi pada burn-up bahan bakar dan temperatur tinggi. Makalah ini mendiskusikan pemodelan dan perhitungan transport Monte Carlo dalam teras HTR pebble bed. HTR pebble bed adalah reaktor berpendingin gas temperatur tinggi dan bermoderator grafit dengan kemampuan kogenerasi. Perhitungan dikerjakan dengan program MCNP5 pada temperatur 1200 K. Pustaka data nuklir energi kontinu ENDF/B-V dan ENDF/B-VI dimanfaatkan untuk melengkapi analisis. Hasil perhitungan secara keseluruhan menunjukkan konsistensi dengan nilai keff yang hampir sama untuk pustaka data nuklir yang digunakan. Pustaka ENDF/B-VI (66c selalu memproduksi keff lebih besar dibandingkan ENDF/B-V (50c maupun ENDF/B-VI (60c dengan bias kurang dari 0,25%. Kisi BCC memprediksi keff hampir selalu lebih kecil daripada kisi lainnya, khususnya FCC. Nilai keff kisi BCC lebih dekat dengan kisi FCC dengan bias kurang dari 0,19% sedangkan dengan kisi SH bias perhitungannya kurang dari 0,22%. Fraksi packing yang sedikit berbeda (BCC= 61%, SH= 60,459% tidak membuat bias perhitungan menjadi berbeda jauh. Estimasi keff ketiga model kisi menyimpulkan bahwa model BCC lebih bisa diadopsi dalam perhitungan HTR pebble bed dibandingkan model FCC dan SH. Verifikasi hasil estimasi ini perlu dilakukan dengan simulasi Monte Carlo atau bahkan program deterministik lainnya guna optimisasi perhitungan teras reaktor temperatur tinggi.   Kata-kunci: kernel, TRISO, bahan bakar pebble, HTR pebble bed

  1. Prediksi Potensi Pencemaran Pengolahan Sampah dengan Metode Gasifikasi Fluidized Bed (Studi Kasus: TPA Benowo, Surabaya

    Directory of Open Access Journals (Sweden)

    Lailatun Nikmah

    2013-03-01

    Full Text Available Sistem pengelolaan sampah di TPA Benowo masih bersistem open dumping dan belum memperhatikan dampak pencemaran terhadap lingkungan. Kuantitas sampah yang masuk ke TPA sebesar 461.705,782 ton pada tahun 2012. Kuantitas sampah diperkirakan meningkat sebanding dengan pertumbuhan penduduk, sehingga dibutuhkan skenario pengolahan sampah yang ramah lingkungan. Skenario pengolahan sampah yang akan dikaji adalah gasifikasi  fluidized bed. Potensi pencemaran gasifikasi  fluidized bed akan dikaji menggunakan metode Life Cycle Assessment (LCA dengan software SimaPro versi 7.1. Satu ton sampah pada studi ini ditentukan sebagai satu fungsi unit. Data input Life Cycle Inventory (LCI meliputi jumlah sampah yang masuk ke reaktor gasifikasi dan energi yang dibutuhkan pada proses gasifikasi berdasarkan pendekatan efisiensi reaktor gasifikasi. Penentuan nilai Life Cycle Impact Assesment (LCIA meliputi Global Warming Potential (GWP dan asidifikasi menggunakan metode Environmental Product Declarations (EPD 2008. Besar dampak dinyatakan dalam faktor emisi yang ekivalen. Kesimpulan pada penelitian ini menunjukkan bahwa skenario pengolahan sampah dengan metode gasifikasi fluidized bed memberikan dampak GWP sebesar 1067,8 kg CO2/fu pada fase start-up dan 875 kg CO2/fu pada fase energy recovery serta asidifikasi sebesar 5,93 kg SO2/fu pada fase start-up dan 4,81 kg SO2/fu pada fase energy recovery.

  2. 2-(Trimethylsiloxyadamantane-2-carbonitrile

    Directory of Open Access Journals (Sweden)

    Richard Betz

    2009-01-01

    Full Text Available In the crystal structure of the title compound, C14H23NOSi, cyclic dimeric units are established by two very weak hydrogen bonds of the type C—H...N with an H...N distance which is only slightly shorter than the sum of the van der Waals radii of 2.75 Å. The graph-set descriptor on the unitary level is R22(14 for the cyclic dimer.

  3. sdf2xyz2sdf

    DEFF Research Database (Denmark)

    Tosco, Paolo; Balle, Thomas

    2011-01-01

    Description sdf2xyz2sdf is an open-source software aimed at converting SDF files into TINKER XYZ files (and viceversa) while performing automatic assignment of MMFF94 atom types, bond types and charges. The sdf2xyz2sdf package consists of two programs: •sdf2tinkerxyz •tinkerxyz2sdf sdf2xyz2sdf de...... that virtually any format conversion from/to TINKER XYZ may be accomplished. Interestingly, also ionic heteroaromatic rings which could not be assigned proper charges by the original TINKER-MMFF code are correctly accounted for by sdf2xyz2sdf.......Description sdf2xyz2sdf is an open-source software aimed at converting SDF files into TINKER XYZ files (and viceversa) while performing automatic assignment of MMFF94 atom types, bond types and charges. The sdf2xyz2sdf package consists of two programs: •sdf2tinkerxyz •tinkerxyz2sdf sdf2xyz2sdf...... depends on OpenBabel for MMFF atom type and charge assignment. Since input to sdf2tinkerxyz is entered through standard input, and output from tinkerxyz2sdf is printed on standard output, it is possible to pipe output from OpenBabel into sdf2tinkerxyz, or to pipe tinkerxyz2sdf output into OpenBabel, so...

  4. 2-Oxo-2-(2-thienylacetic acid

    Directory of Open Access Journals (Sweden)

    Guy Crundwell

    2010-12-01

    Full Text Available The structure of the title compound, C6H4O3S, displays intermolecular hydrogen-bonding dimers. The structure exhibits a thienyl-ring flip disorder of the main molecule [occupancy ratio = 91.3 (2:8.7 (2].

  5. 2-Tangles

    CERN Document Server

    Baez, J C; Baez, John C.; Langford, Laurel

    1997-01-01

    Just as links may be algebraically described as certain morphisms in the category of tangles, compact surfaces smoothly embedded in R^4 may be described as certain 2-morphisms in the 2-category of `2-tangles in 4 dimensions'. In this announcement we give a purely algebraic characterization of the 2-category of unframed unoriented 2-tangles in 4 dimensions as the `free semistrict braided monoidal 2-category with duals on one unframed self-dual object'. A forthcoming paper will contain a proof of this result using the movie moves of Carter, Rieger and Saito. We comment on how one might use this result to construct invariants of 2-tangles.

  6. 2-Methylpropan-2-aminium 2-(methoxycarbonylbenzoate

    Directory of Open Access Journals (Sweden)

    Jian Li

    2011-10-01

    Full Text Available In the title compound, C4H12N+·C9H7O4−, two C atoms and the N atom of the cation lie on a mirror plane, while all the atoms of the anion are disordered about a mirror plane. In the crystal, N—H...O hydrogen bonds link the components into chains along [010]. In the anion, the mean planes of the methoxycarbonyl and carboxylate groups form dihedral angles of 83.0 (2 and 83.2 (2°, respectively, with the aromatic ring.

  7. Microfungal Activity Test Of The Triga Mark II Reactor Tank Isolation to Aluminium corrosion

    International Nuclear Information System (INIS)

    In our pres ious study some pure species of micro fungal have been isolated from cooling water and samples taken from surrounding tank wall of TRIGA Mark II Reaktor. This study was conducted to determine their activities to aluminium 6061-T using modified method of Hortative (1962) in the speed of corrosion transmission process. Each isolate was inoculated into mineral nutrient solution. Changes of ph and reduced weight of Aluminium specimen weight between the experimental and the control groups, and the amounts were proportional to to the length of investigation times. The highest degree of the corrosion speed is given by Penicillium simplicissimum inoculant 2,95.10-6, followed by Paecilomyceus carneus 2,61.106, Penicillium canescens 2,59.10-6 and the control 2,11.106 respectively

  8. 2-Propoxybenzamide

    OpenAIRE

    Yosef Al Jasem; Bassam al Hindawi; Thies Thiemann; Fraser White

    2012-01-01

    In the title molecule, C10H13NO2, the amide –NH2 group is oriented toward the propoxy substituent and an intramolecular N—H...O hydrogen bond is formed between the N—H group and the propoxy O atom. The benzene ring forms dihedral angles of 12.41 (2) and 3.26 (2)° with the amide and propoxy group mean planes, respectively. In the crystal, N—H...O hydrogen bonds order pairs of molecules with their molecular planes parallel, bu...

  9. 2-Propoxybenzamide

    OpenAIRE

    Al Jasem, Yosef; Hindawi, Bassam al; Thiemann, Thies; White, Fraser

    2012-01-01

    In the title mol­ecule, C10H13NO2, the amide –NH2 group is oriented toward the prop­oxy substituent and an intra­molecular N—H⋯O hydrogen bond is formed between the N—H group and the prop­oxy O atom. The benzene ring forms dihedral angles of 12.41 (2) and 3.26 (2)° with the amide and prop­oxy group mean planes, respectively. In the crystal, N—H⋯O hydrogen bonds order pairs of mol­ecules with their mol­ecular planes parallel, but at an offset of 0.73 (2) Å to each other. These pairs are ordere...

  10. LEADER 2

    DEFF Research Database (Denmark)

    Daniels, G H; Hegedüs, L; Marso, S P;

    2015-01-01

    AIMS: To report preliminary data on baseline serum calcitonin concentrations and associated clinical characteristics in a global population with type 2 diabetes before liraglutide or placebo randomization. METHODS: The ongoing LEADER trial has enrolled 9340 people with type 2 diabetes and at high...... with higher serum calcitonin concentrations that were statistically significant. A 20 ml/min/1.73 m(2) decrease in estimated GFR (eGFR) was associated with a 14% increase in serum calcitonin in women and an 11% increase in men. CONCLUSIONS: In the LEADER population, the prevalence of elevated serum calcitonin...

  11. PSA analysis focused on Mochovce safety measure evaluation from operational safety point of view

    International Nuclear Information System (INIS)

    Mochovce NPP consists of four reaktor units of WWER 440/V213 type and it is located in the south-middle part of Slovakia. At present units 1 and 2 are in operation. As these units represent the second generation of WWER reactor design, additional safety measures were implemented to enhance operational and nuclear safety according to the recommendations of international audits and operational experience from other simular units (such as Dukovany and Bohunice). These requirements result into a number of safety measures grouped according to their purpose to achieve recent international requirements on nuclear and operational safety. The paper presents the bases used for specification of safety measures including their grouping into comprehensive tasks covering different areas of safety goals as well as structural organization of project management including participating companies and work performance. Results are also given regarding the contribution of selected safety measures to reduction of total core damage frequency. (authors)

  12. Anaerobic treatment of sulfate-containing wastewater from distilleries

    International Nuclear Information System (INIS)

    Bioprocess evaluation of a staged arrangement of a Pulse Driven Loop Reaktor (PDLR) and a Pulsed Anaerobic Filter (PAF) using highly polluted cherry slops as industrial wastewater shows a COD removal efficiency of 80-90% at loading rates of 8-4 kg COD/(M3.d). Contamination of cherry slops by sulfate (2 g/l) and copper (150-200 mg/l) reduces COD degradation to 40-50 percent. A pulsed anaerobic baffled reactor was envisaged as a corrective tool to improve mineralisation in the presence of sulfate-rich substrates by confining sulfate reducing bacteria to the first 4 chambers of the reactor. Phasing slightly improves COD degradation yield, but is not sufficient for stable process performance. Consequently, the use of lactic acid in stead of sulfuric acid in cherry-fermentation was suggested as a preventive method to avoid sulphide-induced digester failure. (orig.)

  13. ATF2 Proposal Volume 2

    Energy Technology Data Exchange (ETDEWEB)

    Grishanov, B.I.; Logachev, P.; Podgorny, F.; Telnov, V.; /Novosibirsk, IYF; Angal-Kalinin, D.; Jones, J.; Kalinin, A.; /Daresbury; Napoly, O.; Payet, J.; /DAPNIA, Saclay; Braun, H.H.; Schulte, D.; Zimmermann, F.; /CERN; Appleby, R.; Barlow, R.; Bailey, I.; Jenner, L.; Jones, R.; Kourevlev, G.; /Cockcroft Inst.; Elsen, E.; Vogel, V.; Walker, N.; /DESY

    2006-02-27

    For achieving the high luminosity required at the International Linear Collider (ILC), it is critical to focus the beams to nanometer size with the ILC Beam Delivery System (BDS), and to maintain the beam collision with a nanometer-scale stability. To establish the technologies associated with this ultra-high precision beam handling, it has been proposed to implement an ILC-like final focus optics in an extension of the existing extraction beamline of ATF at KEK. The ATF is considered to be the best platform for this exercise, since it provides an adequate ultra-low emittance electron beam in a manner dedicated to the development of ILC. The two major goals for this facility, called ATF2, are: (A) Achievement of a 37 nm beam size, and (B) control of beam position down to 2 nm level. The scientific justification for the ATF2 project and its technical design have been described in Volume 1 of the ATF2 Proposal [1]. We present here Volume 2 of the ATF2 Proposal, in which we present specifics of the construction plans and the group organization to execute the research programs at ATF2. The sections in this report have been authored by relevant ATF2 subgroups within the International ATF Collaboration. The time line of the project is described in Section 2. Section 3 discuss the structure of the international collaboration. Sections 4 and 5 discuss budget considerations, which are presented as well as the design and construction tasks to be shared by the international collaboration at ATF2. Concluding remarks have been contributed by Dr. Ewan Paterson, Chair of the International Collaboration Board of the ATF collaboration.

  14. 2-Propoxybenzamide

    Directory of Open Access Journals (Sweden)

    Yosef Al Jasem

    2012-09-01

    Full Text Available In the title molecule, C10H13NO2, the amide –NH2 group is oriented toward the propoxy substituent and an intramolecular N—H...O hydrogen bond is formed between the N—H group and the propoxy O atom. The benzene ring forms dihedral angles of 12.41 (2 and 3.26 (2° with the amide and propoxy group mean planes, respectively. In the crystal, N—H...O hydrogen bonds order pairs of molecules with their molecular planes parallel, but at an offset of 0.73 (2 Å to each other. These pairs are ordered into two types of symmetry-related columns extended along the a axis with the mean plane of a pair in one column approximately parallel to (-122 and in the other to (-1-22. The two planes form dihedral angle of 84.40 (1°. Overall, in a three-dimensional network, the hydrogen-bonded pairs of molecules are either located in (-1-22 or (-122 layers. In one layer, each pair is involved in four C—H...O contacts, twice as a donor and twice as an acceptor. Additionally, there is a short C—H...C contact between a benzene C—H group and the amide π-system.

  15. 2-Propoxybenzamide

    Science.gov (United States)

    Al Jasem, Yosef; Hindawi, Bassam al; Thiemann, Thies; White, Fraser

    2012-01-01

    In the title mol­ecule, C10H13NO2, the amide –NH2 group is oriented toward the prop­oxy substituent and an intra­molecular N—H⋯O hydrogen bond is formed between the N—H group and the prop­oxy O atom. The benzene ring forms dihedral angles of 12.41 (2) and 3.26 (2)° with the amide and prop­oxy group mean planes, respectively. In the crystal, N—H⋯O hydrogen bonds order pairs of mol­ecules with their mol­ecular planes parallel, but at an offset of 0.73 (2) Å to each other. These pairs are ordered into two types of symmetry-related columns extended along the a axis with the mean plane of a pair in one column approximately parallel to (-122) and in the other to (-1-22). The two planes form dihedral angle of 84.40 (1)°. Overall, in a three-dimensional network, the hydrogen-bonded pairs of mol­ecules are either located in (-1-22) or (-122) layers. In one layer, each pair is involved in four C—H⋯O contacts, twice as a donor and twice as an acceptor. Additionally, there is a short C—H⋯C contact between a benzene C—H group and the amide π-system. PMID:22969539

  16. ATF2 Proposal v. 2

    CERN Document Server

    Grishanov, B I; Alabau-Pons, M; Angal-Kalinin, Deepa; Appleby, R; Araki, S; Bailey, I; Bambade, P; Bane, Karl Leopold Freitag; Barlow, R; Blair, G A; Bolzon, B; Boorman, G; Bosco, A; Brachmann, A; Braun, Hans Heinrich; Burrows, P N; Carter, J; Choi, J; Christian, Glenn B; Clarke, C; Dabiri-Khah, A; Dadoun, O; Danagulyan, S; Delerue, N; Dixit, S; Driouichi, C; Elsen E; Gao, J; Geffroy, N; Gronberg, J; Hartin, Anthony F; Hayano, H; Higashi, Y; Himel, T; Honda, Y; Howell, D; Huang, J Y; Iwashita, Y; Jenner, L; Jones, J; Jones, R; Jérémie, A; Kalinin, A; Kanazawa, K; Kang, H S; Karyotakis, Yu; Kim, E S; Kim, S; Komamiya, S; Kourevlev, German Yu; Kubo, K; Kumada, M; Kume, T; Kuriki, M; Kuroda, S; Liu, W; Logatchev, P V; Lyapin, A; Malton, S; Markiewicz, T W; Masuzawa, M; Mihara, T; Miller, D J; Molloy, S; Mtingwa, S; Naito, T; Nan-Phinney, Y; Napoly, O; Nelson, J; Okugi, T; Payet, J; Pei, G X; Pivi, M T F; Podgorny, F; Price, M; Raubenheimer, T O; Reichold, A; Ross, M; Sanuki, T; Schulte, Daniel; Seryi, R A; Solyak, N; Soo Ko In; Spencer, C M; Suehara, T; Sugahara, R; Takahashi, T; Takashi-Boogert, S; Tauchi, T; Telnov, Valery I; Tenenbaum, P G; Terunuma, N; Toge, N; Torrence, E; Urakawa, J; Urner, D; Vogel, V; Walker, N; Wang, J Q; Wendt, M; White, G; Wing, M; Wolski, A; Woodley, M; Yamaoka, H; Yokoya, K; Zimmermann, Frank

    2006-01-01

    For achieving the high luminosity required at the International Linear Collider (ILC), it is critical to focus the beams to nanometer size with the ILC Beam Delivery System (BDS), and to maintain the beam collision with a nanometer-scale stability. To establish the technologies associated with this ultra-high precision beam handling, it has been proposed to implement an ILC-like final focus optics in an extension of the existing extraction beamline of ATF at KEK. The ATF is considered to be the best platform for this exercise, since it provides an adequate ultra-low emittance electron beam in a manner dedicated to the development of ILC. The two major goals for this facility, called ATF2, are : (A) Achievement of a 37 nm beam size, and (B) control of beam position down to 2 nm level. The scientific justification for the ATF2 project and its technical design have been described in Volume 1 of the ATF2 Proposal [1]. We present here Volume 2 of the ATF2 Proposal, in which we present specifics of the construction...

  17. ggplot2

    CERN Document Server

    Wickham, Hadley

    2009-01-01

    Describes ggplot2, a data visualization package for R that uses the insights from Leland Wilkison's "Grammar of Graphics" to create a powerful and flexible system for creating data graphics. This book is suitable for those who have struggled with displaying their data in an informative and attractive way

  18. Crystal structure of N-(2-{[2,6-bis(2,2,2-trifluoroacetamidophenyl]disulfanyl}-3-(2,2,2-trifluoroacetamidophenyl-2,2,2-trifluoroacetamide

    Directory of Open Access Journals (Sweden)

    Dennis Awasabisah

    2015-09-01

    Full Text Available The title compound, C20H10F12N4O4S2, is an organic diaryl disulfide compound with trifluoroacetamide substituents at the ortho-positions of each benzene ring. There are two molecules (labeled A and B in the asymmetric unit. The F atoms of three of the –CF3 groups exhibit rotational disorder over two positions each. The S—S bond distances are 2.0914 (7 and 2.0827 (6 Å for molecules A and B, respectively. The dihedral angle between the S—S—C and S—C—C planes is 103.05 (15° for molecule A and 104.09 (15° for molecule B. The three-dimensional supramolecular architecture of the crystal is sustained by numerous N—H...O, N—H...S and C—H...O interactions.

  19. Chapter 2

    OpenAIRE

    Cissé, Salmana; Keith M. Moore; Brewster, C.

    2005-01-01

    Metadata only record In chapter 2, Cissé et al. introduce the social and historical context shaping the lifescape of the Inland Delta of the Niger, the core of Mali's 5th Region. Various ethnic groups have coexisted in this area for centuries, generating livelihoods with complementary systems of production. The chapter discusses how recent changes in agricultural and pastoral production systems have unbalanced this symbiosis and increased competition for scarce resources, thereby leading t...

  20. (E-2-(2-Nitroethenylfuran

    Directory of Open Access Journals (Sweden)

    Pedro Valerga

    2009-08-01

    Full Text Available The title compound, C6H5NO3, was synthesized via condensation of furfural with nitromethane in the presence of isobutylamine. The compound crystallizes exclusively as the E isomer. The angle between the mean planes of the furan ring and the nitroalkenyl group is 1.3 (2°.

  1. 2-Cyclopentylidenehydrazinecarboxamide

    Directory of Open Access Journals (Sweden)

    Hoong-Kun Fun

    2012-09-01

    Full Text Available The asymmetric unit of the title compound, C6H11N3O, consists of two independent molecules in which the cyclopentane rings adopt envelope conformations with CH2 grouping as the flap and the semicarbazone groups are essentially planar, with maximums deviation of 0.0311 (12 and 0.0285 (12 Å. In the crystal, N—H...O, N—H...N and C—H...O hydrogen bonds link the molecules to form sheets lying parallel to the ab plane.

  2. Linac 2

    CERN Multimedia

    Photographic Service

    1979-01-01

    It was built to obtain higher intensities and better stability than with the original Linac 1. Construction and running-in were completed in 1979, routine operation began in 1980. One sees its 3 tanks, with, at the top, the electrical connections for the quadrupoles (which are inside the drift-tubes) and watercooling. As Linac 1, Linac 2 is driven at 202.56 MHz and accelerates protons to 50 MeV for injection into the 4 rings of the PS Booster.

  3. Põhja-Korea lubas taas jätta tuumaplaanid / Jürgen Tamme

    Index Scriptorium Estoniae

    Tamme, Jürgen

    2007-01-01

    Pekingis toimunud kuuepoolsete desarmeerimiskõneluste tulemusena on Põhja-Korea nõus andma ülevaate riigi tuumarajatistest ning alustama nende likvideerimist. 14. juulil suleti Yongbyoni tuumakeskuse reaktor. Lisa: Tuumavaidlus

  4. Adamkus : EU might be willing to negotiate on postponing Ignalina reactor closure

    Index Scriptorium Estoniae

    2008-01-01

    President Valdas Adamkus teatas võimalusest, et EL alustab arutelu Ignalina tuumaelektrijaama sulgemise edasilükkamisest. Uue jaama valmimise aeg pole teada ning praegune reaktor on tänu rootslaste abile turvaline

  5. #CERNJOBSEnigma2

    CERN Multimedia

    Stephanie Hills

    2015-01-01

    Curiosity is an essential attribute for anyone who works at CERN, and the HR recruitment team is about to pique the interest of its social media followers with the release of its second Enigma challenge, #CERNJOBSEnigma2. Starting on 29 May, daily clues will be revealed and social media followers can work together to solve the enigma before the answer is revealed on 5 June.   The first Enigma challenge in 2013 was designed to build interest and excitement in the CERN Jobs social media presence ahead of the launch of a radical new web site. One of the surprising aspects of the first Enigma challenge was how collaboratively social media followers worked together to solve the clues. One of those followers was Dom Nicosia. At the time, Dom was working in the UK as a medical linear accelerator technician in the National Health Service. #CERNJOBSEnigma was never intended to be a direct recruitment tool, but it sparked Dom’s interest in CERN and he is now working as a technician in the Be...

  6. Main: O2F2BE2S1 [PLACE

    Lifescience Database Archive (English)

    Full Text Available O2F2BE2S1 S000163 17-May-1998 (last modified) kehi opaque-2 recognition site F2 in ...Bertholletia excelsa (Brazil nut tree) 2S storage protein gene (be2S1); O2 protein binds to F1, F2 and F3 sequences of be2S1...coxin, the maize b-32 genes and the AP-1 pseudopalindrome; O2; opaque-2; be2S1; seed; Brazil nut tree (Bertholletia excelsa) GCCACCTCAT ...

  7. N-(2-Nitrophenylthiophene-2-carboxamide

    Directory of Open Access Journals (Sweden)

    Rodolfo Moreno-Fuquen

    2014-05-01

    Full Text Available The title compound, C11H8N2O3S, shows two molecules per asymmetric unit, with the dihedral angles between the benzene and thiophene rings of 13.53 (6 and 8.50 (5° being a notable difference between them. An intramolecular N—H...O hydrogen-bond in each molecule generates an S(6 ring motif. The crystal packing shows no classical hydrogen bonds with the molecules being packed to form weak C—H...O and C—H...S interactions leading to R22(9 and R44(25 rings which are edge-shared, giving layers parallel to (010.

  8. SAFIRA. Sub-project B 1.3: Development of coupled in-situ reactors and optimisation of the geochemical processes in the discharge of different in situ reactor sytems. Final report; SAFIRA. Teilprojekt B 1.3: Entwicklung von gekoppelten in situ-Reaktoren und Optimierung der geochemischen Prozesse im Abstrom von verschiedenen in situ-Reaktor-Systemen. Abschlussbericht

    Energy Technology Data Exchange (ETDEWEB)

    Dahmke, A.; Schaefer, D.; Koeber, R.; Plagentz, V.

    2002-12-01

    The Bitterfeld ground water is contaminated with many different pollutants over a large area. Long-term measures like reactive barriers for purification are required. However, groundwater contaminated with multiple contaminants cannot be purified by a single reactive material; for this reason, the effectivity of combinations of different reactive materials was investigated. Of the combinations investigated, reducing iron and activated carbon connected in series was the most effective: The iron will remove the reducible chlorinated hydrocarbons, while the rest of the contaminants are adsorbed to the activated carbon. Iron and ORC was another interesting option, but the combination of iron and activated carbon was found to be the most favourable option. Until a better method is available, it is recommended to connect iron and activated carbon in parallel for removing contaminant mixtures. Directly behind reactive iron barriers (also when combined with activated carbon), the limiting values of the Freshwater Ordinance for Fe(II) and pH are exceeded. Directly behind ORC reactors, the limiting values for Mg and pH are exceeded. Investigations in the outflow of these reactive materials showed that the high pH values are buffered by contact with the aquifer material to values typical of aquifers, which usually are below the limiting values of the Freshwater Ordinance. However, as the buffer capacity of the soil is exhausted, a zone with a higher pH starts to grow in the aquifer. The growth of this zone depends on the pH and on the aquifer material. Especially in soils as found at Bitterfeld, with a high concentration of organic matter, we find long-term desorption of pollutants from the aquifer materials which will burden the purified water leaving the water treatment system and prohibit its utilization. [German] Der Grundwasserleiter im Raum Bitterfeld ist grossraeumig mit vielen verschiedenen Substanzen kontaminiert. Aufgrund der grossraeumigen Erstreckung kommen nur langfristig kostenguenstige passive Massnahmen wie reaktive Barrieren zur Sanierung in Frage. Grundwasser, das mit mehreren und unterschiedlich reagierenden Stoffen kontaminiert ist, kann jedoch nicht mit Hilfe eines einzelnen reaktiven Materials gereinigt werden, daher wurde die Effektivitaet von Kombinationen unterschiedlicher reaktiver Materialien zur Sanierung untersucht. Von den untersuchten Kombinationen erwies sich die Hintereinanderschaltung von reduzierendem Eisen und Aktivkohle als besonders effektiv. Reduzierbare chlorierte Kohlenwasserstoffe werden im Eisen entfernt, die verbleibenden Kontaminanten adsorbieren auf der Aktivkohle. Auch die Hintereinanderschaltung von Eisen und Sauerstoff abgebenden ORC, in denen ein aerober mikrobieller Abbau statt findet, ist zur Entfernung von Mischkontaminationen geeignet. Eine Kostenschaetzung zeigt, dass die Kombination von Eisen und Aktivkohle in Abhaengigkeit von der Zusammensetzung der Kontamination guenstiger als Aktivkohle allein sein kann und generell guenstiger als die Kombination von Eisen und ORC ist. Ohne ein guenstigeres Verfahren zum Einbringen von Sauerstoff in den Aquifer wird die Hintereinanderschaltung von Eisen und Aktivkohle zur Sanierung von Mischkontaminationen empfohlen. Im direkten Abstrom von reaktiven Eisenbarrieren (auch in Kombination mit Aktivkohle) sind die Grenzwerte fuer Fe(II) und pH entsprechend der Trinkwasserverordnung ueberschritten. Im Abstrom von ORC-Reaktoren werden die zulaessigen Werte fuer Mg und pH ueberschritten. Untersuchungen im Abstrom dieser reaktiven Materialien zeigen, dass die hohen pH-Werte durch den Kontakt mit dem Aquifermaterial auf Aquifer-typische Werte gepuffert werden, die ueblicherweise unter den Grenzwerten der Trinkwasserverordnung liegen. Mit Erschoepfen der Pufferkapazitaet des Bodens breitet sich jedoch eine Zone mit erhoehtem pH-Wert im Aquifer aus. Die Geschwindigkeit dieser Ausbreitung haengt vom pH-Wert und dem Aquifermaterial ab. Gerade fuer sehr Organik reiche Boeden wie in Bitterfeld wird auch eine lange anhaltende Desorption von Schadstoffen a

  9. Development of an improved methodology for the determination of the neutron load of the pressure vessel steel of WWER-1000 type reactors. Final report; Entwicklung einer fortgeschrittenen Methodik zur Bestimmung der Neutronenbelastung des Druckbehaeltermaterials vom Reaktor des Typs WWER-1000. Abschlussbericht

    Energy Technology Data Exchange (ETDEWEB)

    Barz, H.U.; Boehmer, B.; Konheiser, J.; Stephan, I.

    1998-05-01

    The investigations, reported on here, are aimed at the theoretical and experimental determination of the neutron exposure of the VVER-1000 reactors Balakovo-3 and Rovno-3. The overall approach, partially developed and at least improved in the frame of this project, comprises the pure calculation part, the gamma spectrometric analysis of neutron activation detectors and the comparison of experimental and theoretical results using the spectrum adjustment procedure. The approach is not restricted to neutron embrittlement but can be applied to neutron fluence problems in general. (orig./GL) [Deutsch] In diesem Projekt wurden fuer die WWER-1000 Reaktoren Balakovo-3 und Rovno-3 die Parameter der Neutronenbelastung experimentell und theoretisch bestimmt. Der vorliegende Bericht beschreibt das methodische Vorgehen, welches aus dem reinen Berechnungsteil, der gammaspektrometrischen Analyse der Ativierungsdetektoren und dem Vergleich der gemessenen und berechneten Werte einschliesslich der Spektrumsjustierung besteht. Dieses Instrumentarium, welches allgemein bei der Bestimmung der Neutronenfluenz anwendbar ist, wurde im Projektzeitraum weiter verbessert. (orig./GL)

  10. Katalytische Abluftreinigung : verfahrenstechnische Aufgaben und neue Lösungen

    OpenAIRE

    Eigenberger, Gerhart; Nieken, Ulrich

    1991-01-01

    Neue Verfahren der katalytischen Abluftreinigung mit im Reaktor integriertem regenerativem Wärmeaustausch erlauben die autotherme Abluftreinigung bis zu Schadstoffkonzentrationen entsprechend einer adiabaten Temperaturerhöhung von weniger als 20°C. Bei höheren Konzentrationen erlaubt ein Mittenabzug die nahezu vollständige Auskopplung der Verbrennungswärme auf dem höchsten im Reaktor vorliegenden Temperaturniveau. Infolge der Rückkopplung durch den integrierten Wärmeaustausch besitzt der Ablu...

  11. Kinetische Untersuchungen zur Methanol-Dampfreformierung am PdZn/ZnO-Katalysatorsystem

    OpenAIRE

    Kölbl, Andreas

    2004-01-01

    In dieser Arbeit wird eine neuartige Strömungsapparatur mit Mikrostrukturreaktor vorgestellt. Diese erlaubt katalytische Experimente in einem großen Druckbereich. Verschiedene Dosierungskonzepte zur Realisierung kleiner Reaktandenpartialdrücke im Reaktor werden diskutiert. Es wird gezeigt und experimentell verifiziert, dass durch die Teilung des generierten Eduktstroms und eine Teildosierung durch Kapillaren in den Reaktor im Vergleich zu klassischen Methoden wie der zusätzlichen Dosierung vo...

  12. Efek Durasi Pencahayaan Pada Sistem HRAR Untuk Menurunkan Kandungan Minyak Solar Dalam Air Limbah

    Directory of Open Access Journals (Sweden)

    Dian Puspitasari

    2014-09-01

    Full Text Available Kandungan minyak di dalam air limbah industri perminyakan umumnya bersifat toksik terhadap mikroorganisme dan mengganggu proses pengolahan secara biologis. Sistem HRAR diperkirakan dapat mengatasi hambatan tersebut melalui proses fotosintesis untuk menghasilkan oksigen yang dibutuhkan mikroorganisme dalam mendegradasi senyawa hidrokarbon. Penelitian ini bertujuan mengkaji pengaruh perpanjangan waktu pencahayaan pada kemampuan HRAR dalam menurunkan kandungan minyak di dalam limbah. Variabel yang digunakan pada penelitian ini adalah variasi durasi pencahayaan dan variasi penambahan volume minyak solar yang ditambahkan ke dalam reaktor. Variasi durasi pencahayaan yang digunakan adalah pencahayaan selama 12 jam dan pencahayaan selama 24 jam. Sedangkan penambahan volume minyak solar ke dalam masing-masing reaktor adalah sebesar 346 ppm, 519 ppm dan 692 ppm. Hasil yang didapatkan dari penelitian ini adalah durasi pencahayaan selama 12 jam memiliki efek yang lebih baik terhadap penurunan konsentrasi minyak dibandingkan pencahayaan selama 24 jam. Hal ini dapat terlihat dari baiknya pertumbuhan alga dan bakteri di dalam reaktor serta tingginya penurunan konsentrasi minyak solar di dalamnya. Penurunan konsentrasi minyak solar terbaik terdapat pada reaktor dengan penambahan minyak solar sebesar 346 ppm. Pada reaktor dengan durasi pencahayaan selama 12 jam terjadi penurunan konsentrasi minyak sebesar 78,4%. Sedangkan penurunan kandungan minyak solar pada reaktor dengan durasi pencahayaan selama 24 jam adalah sebesar 73,9%.

  13. 2-minute Gridded Global Relief Data (ETOPO2) v2

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Two-minute gridded global relief for both ocean and land areas are available in the ETOPO2v2 (2006) database. ETOPO2v2 replaced ETOPO2 (2001). The historic 2-minute...

  14. Main: BOX2PSGS2 [PLACE

    Lifescience Database Archive (English)

    Full Text Available BOX2PSGS2 S000204 17-May-1998 (last modified) kehi Box 2 in glutamine synthetase (GS...2) gene in pea (P.s.); Repeated in tandem with a partial palindrome located between the repeats; Located at ca. -300 of pea GS...2; Box 2; glutamine synthetase; GS2; pea (Pisum sativum); TCTAAGCAAAG ...

  15. Influence of relaxation effects on probabilities of the 2s2p3 S22s2 2p2 3p1,2intercombination

    Institute of Scientific and Technical Information of China (English)

    袁萍; 刘欣生; 等

    2003-01-01

    Transition probabilities of the 2s2p3 5S2-2s2 2P2 3P1,2 intercombination transitions in NII have been calculated by using a large-scale multiconfiguration Dirac-Fock method.In the calculation themost important effects of relativity,correlation,and relaxation are considered.From the calculated transition probabilities,the lifetime of the s22p3 5S2 metastable state is derived.The result is in excellent agreement agreement with the latest experimental result.In the meantime the influence of anomalously strong relaxation effects on probabilities of the 2s2p3 5S2-2s2 2p2 3P1,2 lines in NII have been found.

  16. UNITS IN $F_2D_{2p}$

    OpenAIRE

    Kaur, Kuldeep; Khan, Manju

    2012-01-01

    Let $p$ be an odd prime, $D_{2p}$ be the dihedral group of order 2p, and $F_{2}$ be the finite field with two elements. If * denotes the canonical involution of the group algebra $F_2D_{2p}$, then bicyclic units are unitary units. In this note, we investigate the structure of the group $\\mathcal{B}(F_2D_{2p})$, generated by the bicyclic units of the group algebra $F_2D_{2p}$. Further, we obtain the structure of the unit group $\\mathcal{U}(F_2D_{2p})$ and the unitary subgroup $\\mathcal{U}_*(F_...

  17. Main: IDE2HVIDS2 [PLACE

    Lifescience Database Archive (English)

    Full Text Available IDE2HVIDS2 S000464 24-April-2005 (last modified) kehi IDE2 (iron-deficiency-respons...ive element 2) found at -262/-236 of barley IDS2 (iron deficiency specific clone 2) gene promoter; See also S000463; iron; root; Hordeum vulgare (barley) TTGAACGGCAAGTTTCACGCTGTCACT ...

  18. 4 CFR 2.2 - References.

    Science.gov (United States)

    2010-01-01

    ... 4 Accounts 1 2010-01-01 2010-01-01 false References. 2.2 Section 2.2 Accounts GOVERNMENT ACCOUNTABILITY OFFICE PERSONNEL SYSTEM PURPOSE AND GENERAL PROVISION § 2.2 References. (a) Subchapters III and IV of Chapter 7 of Title 31 U.S.C. (b) Title 5, United States Code....

  19. Na2MoO2As2O7

    Directory of Open Access Journals (Sweden)

    Raja Jouini

    2012-12-01

    Full Text Available Disodium molybdenum dioxide diarsenate, Na2MoO2As2O7, has been synthesized by a solid-state reaction. The structure is built up from MoAs2O12 linear units sharing corners to form a three-dimensional framework containing tunnels running along the a-axis direction in which the Na+ cations are located. In this framework, the AsV atoms are tetrahedrally coordinated and form an As2O7 group. The MoVI atom is displaced from the center of an octahedron of O atoms. Two Na+ cations are disordered about inversion centres. Structural relationships between different compounds: A2MoO2As2O7 (A = K, Rb, AMOP2O7 (A = Na, K, Rb; M = Mo, Nb and MoP2O7 are discussed.

  20. Strain engineering of WS2, WSe2, and WTe2

    KAUST Repository

    Amin, Bin

    2014-01-01

    We perform first-principles calculations to investigate the structural, electronic, and vibrational properties of WS2, WSe2, and WTe2 monolayers, taking into account the strong spin orbit coupling. A transition from a direct to an indirect band gap is achieved for compressive strain of 1% for WS2, 1.5% for WSe2, and 2% for WTe 2, while the nature of the band gap remains direct in the case of tensile strain. The size of the band gap passes through a maximum under compressive strain and decreases monotonically under tensile strain. A strong spin splitting is found for the valence band in all three compounds, which is further enhanced by tensile strain. The mobility of the electrons grows along the series WS2 < WSe2 < WTe2. This journal is © the Partner Organisations 2014.

  1. Main: TE2F2NTPCNA [PLACE

    Lifescience Database Archive (English)

    Full Text Available TE2F2NTPCNA S000397 05-November-2005 (last modified) kehi te2f-2 found in the promoter of tobacco PCN...riptional activation in actively dividing cells and tissue; E2F; PCNA; meristematic tissue; cell cycle; tobacco (Nicotiana tabacum) ATTCCCGC ...

  2. H2O2: a dynamic neuromodulator.

    Science.gov (United States)

    Rice, Margaret E

    2011-08-01

    Increasing evidence implicates hydrogen peroxide (H(2)O(2)) as an intracellular and intercellular signaling molecule that can influence processes from embryonic development to cell death. Most research has focused on relatively slow signaling, on the order of minutes to days, via second messenger cascades. However, H(2)O(2) can also mediate subsecond signaling via ion channel activation. This rapid signaling has been examined most thoroughly in the nigrostriatal dopamine (DA) pathway, which plays a key role in facilitating movement mediated by the basal ganglia. In DA neurons of the substantia nigra, endogenously generated H(2)O(2) activates ATP-sensitive K(+) (K-ATP) channels that inhibit DA neuron firing. In the striatum, H(2)O(2) generated downstream from glutamatergic AMPA receptor activation in medium spiny neurons acts as a diffusible messenger that inhibits axonal DA release, also via K-ATP channels. The source of dynamically generated H(2)O(2) is mitochondrial respiration; thus, H(2)O(2) provides a novel link between activity and metabolism via K-ATP channels. Additional targets of H(2)O(2) include transient receptor potential (TRP) channels. In contrast to the inhibitory effect of H(2)O(2) acting via K-ATP channels, TRP channel activation is excitatory. This review describes emerging roles of H(2)O(2) as a signaling agent in the nigrostriatal pathway and basal ganglia neurons.

  3. Main: GLUTEBOX2OSGT2 [PLACE

    Lifescience Database Archive (English)

    Full Text Available GLUTEBOX2OSGT2 S000047 17-May-1998 (last modified) kehi Box II of rice (O.s.) glute...lin Gt2 gene family; nuclear factor binding site; glutelin; Box II; Gt2; seed; endosperm; rice (Oryza sativa) TCCGTGTACCA ...

  4. Reference: IDE2HVIDS2 [PLACE

    Lifescience Database Archive (English)

    Full Text Available IDE2HVIDS2 Kobayashi T, Nakayama Y, Itai RN, Nakanishi H, Yoshihara T, Mori S, Nish...izawa NK. Identification of novel cis-acting elements, IDE1 and IDE2, of the barley IDS2 gene promoter confe

  5. Novel thioarsenates {[Mn(2,2'-bipy)2(SCN)][Mn(2,2'-bipy)](As(V)S4)}2 and {[Mn(2,2'-bipy)2(SCN)]2[As(III)2(S2)2S2]}: introducing an anionic second ligand to modify MnII complex cations of 2,2'-bipyridine.

    Science.gov (United States)

    Liu, Guang-Ning; Guo, Guo-Cong; Wang, Ming-Sheng; Huang, Jin-Shun

    2014-03-14

    Two novel manganese thioarsenates, {[Mn(2,2'-bipy)2(SCN)][Mn(2,2'-bipy)](As(V)S4)}2 (1, 2,2'-bipy = 2,2'-bipyridine) and {[Mn(2,2'-bipy)2(SCN)]2[As(III)2(S2)2S2]} (2), containing thiocyanate-modified Mn-2,2'-bipy complex cations were synthesized. They feature two terminal [Mn(2,2'-bipy)2(SCN)](+) complex cations bridged by a polyanion {[Mn(2,2'-bipy)]2(As(V)S4)2}(2-) for 1 and a cyclic thioarsenate anion (As(III)2S6)(2-) for 2. In 2, the [As(III)2(S2)2S2](2-) anion can be described as two (As(III)S3)(3-) trigonal-pyramids interlinked through S-S bonds. The method to obtain new metal complex cations shown here, introducing an anionic second ligand to modify the number of coordination sites and the charges of the metal complex cations simultaneously, is different from the traditional methods, varying either the TM center or the organic ligand or employing mixed neutral organic ligands, and may open up a new route for preparing novel chalcogenidometalates. Compounds 1 and 2 exhibit wide optical gaps of 2.20 and 2.67 eV, respectively, and photoluminescence with the emission maxima occurring around 440 nm. Magnetic measurements show the presence of antiferromagnetic interactions between Mn(II) centers in the two compounds.

  6. Status of the T2L2/Jason2 Experiment

    Science.gov (United States)

    Exertier, Pierre; Samain, Etienne; Bonnefond, Pascal; Guillemot, Philippe

    2010-12-01

    The T2L2 (Time Transfer by Laser Link) project, developed by CNES and OCA will permit the synchronization of remote ultra stable clocks and the determination of their performances over intercontinental distances. The principle of the experiment derives from Satellite Laser Ranging (SLR) technology with dedicated space equipment. T2L2 was accepted in 2005 to be on board the Jason2 altimetry satellite. The payload consists of both event timer and photo detection modules. The system uses the ultra-stable quartz oscillator of DORIS as on-board reference clock on one hand, and the Laser Reflector Array, making T2L2 a real two-way time transfer system on the other hand. The expected time stability of the T2L2 instrument (detection and timing), referenced by the DORIS oscillator and including all internal error sources should be at the level of 10-12 ps at 1 s and T2L2 should permit to maintain a precision of 1 to a few ps when measuring the phase of a clock during around 1000 seconds. First analysis of T2L2 data permitted to validate some important characteristics of the experiment such as the sensitivity of the instrument to laser pulse amplitude (from single to multi-photon detection mode), data noises (of different sources, SLR and T2L2), and first error budget and time stability of ground to space time transfers. The paper describes the space experiment and highlights the different steps of the data processing after a first year of operations (between July 2008 and June 2009). We show the time stability which can be reached when a laser station is equipped with an Hydrogen Maser or a Cesium clock as a time reference; thus, the first estimations give 7 ps over 30 s. We conclude by presenting the campaigns of ground to ground time transfers already planned between the Paris Observatory and different places in Europe.

  7. 2-Amino-2,3-dimethylbutanamide

    Directory of Open Access Journals (Sweden)

    Yongbiao Yin

    2010-06-01

    Full Text Available The title compound, C6H14N2O, was synthesized by the reaction between 2-amino-2,3-dimethylbutanonitrile and oil of vitriol (sulfuric acid. A racemic mixture of L- and R-2-amino-2,3-dimethylbutanamide was characterized crystallographically. In the crystal structure, intermolecular N—H...O hydrogen bonds link the two enantiomers into a three-dimensional network.

  8. Influence of dissolved product gas on organism retention in biogas tower reactors; Der Einfluss geloester Produktgase auf den Organismenrueckhalt in Biogas-Turmreaktoren

    Energy Technology Data Exchange (ETDEWEB)

    Pietsch, T.; Maerkl, H. [Technische Univ. Hamburg-Harburg, Hamburg (Germany). Arbeitsbereich Bioprozess- und Bioverfahrenstechnik

    1999-07-01

    In biogas tower reactors, considerable oversaturations of CO{sub 2} dissolved in molecular form in the liquid phase can occur, compared to the thermodynamic steady state with the gas phase. In buildings of low height, upflow designs cause biological CO{sub 2} production along the reactor to saturate the liquid phase with carbonic acid, and also cause the pH value increasing from acid degradation to bind CO{sub 2} in the form of hydrogen carbonate HCO{sup -}{sub 3}. Where buildings are very high, the liquid phase becomes degassed through a decrease in CO{sub 2} partial pressure because of decreasing hydrostatic pressure along the length of the reactor. Rising gas bubbles in the liquid phase as well as enclosed gas bubbles in biomass particles slow down their sedimentation considerably and can result in flotation of biomass particles owing to gas expansion from declining hydrostatic pressure. A sedimentation characteristics for biomass under decreasing hydrostatic pressure is given. Conditions critical to biomass retention are energy input into CO{sub 2}-oversaturated liquids as well as dynamically rapid drops in pH value owing to associated CO{sub 2} degassing. (orig.) [German] In Biogas-Turmreaktoren koennen erhebliche Uebersaettigungen von molekular geloestem CO{sub 2} in der Fluessigphase gegenueber dem thermodynamischen Gleichgewichtszustand mit der Gasphase auftreten. Bei geringer Bauhoehe fuehrt bei upflow-Konzepten die biologische CO{sub 2}-Produktion entlang des Reaktors zu einer Aufsaettigung der Fluessigphase mit Kohlensaeure und der durch Saeureabbau ansteigende pH-Wert zu einer Bindung des CO{sub 2} in Form des Hydrogencarbonats HCO{sub 3}{sup -}. Sehr grosse Bauhoehen fuehren zu einer Entgasung der Fluessigphase durch Abnahme des CO{sub 2}-Partialdruckes aufgrund des abnehmenden hydrostatischen Druckes entlang der Reaktorhoehe. Aufsteigende Gasblasen in der Fluessigphase sowie eingeschlossene Gasblasen in Biomassepartikeln mindern deren

  9. Conformally reducible 2+2 spacetimes

    Energy Technology Data Exchange (ETDEWEB)

    Carot, Jaume [Departament de Fisica, Universitat de les Illes Balears, Cra. Valldemossa km 7.5, E-07071 Palma de Mallorca (Spain); Tupper, Brian O J [Department of Mathematics and Statistics, University of New Brunswick, Fredericton, NB E3B 5A3 (Canada)

    2002-08-07

    Spacetimes which are conformal to 2+2 reducible spacetimes are considered. We classify them according to their conformal algebra, giving in each case explicit expressions for the metric and conformal Killing vectors, and providing physically meaningful examples.

  10. Conformally reducible 2+2 spacetimes

    CERN Document Server

    Carot, J

    2002-01-01

    Spacetimes which are conformal to 2+2 reducible spacetimes are considered. We classify them according to their conformal algebra, giving in each case explicit expressions for the metric and conformal Killing vectors, and providing physically meaningful examples.

  11. Difluoro[2-(quinolin-2-ylphenolato]borane

    Directory of Open Access Journals (Sweden)

    Xi Yang

    2011-05-01

    Full Text Available The title compound, C15H10BF2NO, was synthesized by the reaction of 2-(quinolin-2-ylphenol and boron trifluoride etherate. The quinoline ring system and the benzene ring are twisted, making a dihedral angle of 8.3 (2°. In the crystal, π–π interactions between the aromatic rings [centroid–centroid distance = 3.638 (9 Å] link the molecules into chains propagating in [100].

  12. Main: HDZIP2ATATHB2 [PLACE

    Lifescience Database Archive (English)

    Full Text Available HDZIP2ATATHB2 S000373 31-Jul-2001 (last modified) uchi Binding site of the Arabidop...sis (A.T.) homeobox gene (ATHB-2) found in its own promoter; Located between -72 and -80; Similar to the HD-ZIP...lator of its own gene; M=C/A; ATHB-2; HAT4; HD-ZIP; shade avoidance responses; Arabidopsis thaliana TAATMATTA ...

  13. 2-(1,3-Benzothiazol-2-yliminomethyl-2-naphthol

    Directory of Open Access Journals (Sweden)

    Khadija O. Badahdaha

    2009-04-01

    Full Text Available In the title molecule, C18H12N2OS, the dihedral angle between the two fused-ring systems is 7.2 (1°. The hydroxy group forms an intramolecular hydrogen bond with the imino group.

  14. Synthesis of 2-(2-Aminopyrimidine)-2,2-difluoroethanols as Potential Bioisosters of Salicylidene Acylhydrazides

    OpenAIRE

    Dahlgren, Markus K.; Öberg, Christopher T; Wallin, Erika A.; Pär G. Janson; Mikael Elofsson

    2010-01-01

    Salicylidene acylhydrazides are inhibitors of type III secretion in several Gram-negative pathogens. To further develop the salicylidene acylhydrazides, scaffold hopping was applied to replace the core fragment of the compounds. The novel 2-(2-amino-pyrimidine)-2,2-difluoroethanol scaffold was identified as a possible analog to the salicylidene acylhydrazide core structure. The synthesis of a library of 2-(2-amino-pyrimidine)-2,2-difluoro-ethanols is described in this paper.

  15. Synthesis of 2-(2-Aminopyrimidine-2,2-difluoroethanols as Potential Bioisosters of Salicylidene Acylhydrazides

    Directory of Open Access Journals (Sweden)

    Markus K. Dahlgren

    2010-06-01

    Full Text Available Salicylidene acylhydrazides are inhibitors of type III secretion in several Gram-negative pathogens. To further develop the salicylidene acylhydrazides, scaffold hopping was applied to replace the core fragment of the compounds. The novel 2-(2-amino-pyrimidine-2,2-difluoroethanol scaffold was identified as a possible analog to the salicylidene acylhydrazide core structure. The synthesis of a library of 2-(2-amino-pyrimidine-2,2-difluoro-ethanols is described in this paper.

  16. Synthesis of 2-(2-aminopyrimidine)-2,2-difluoroethanols as potential bioisosters of salicylidene acylhydrazides.

    Science.gov (United States)

    Dahlgren, Markus K; Oberg, Christopher T; Wallin, Erika A; Janson, Pär G; Elofsson, Mikael

    2010-06-01

    Salicylidene acylhydrazides are inhibitors of type III secretion in several gram-negative pathogens. To further develop the salicylidene acylhydrazides, scaffold hopping was applied to replace the core fragment of the compounds. The novel 2-(2-amino-pyrimidine)-2,2-difluoroethanol scaffold was identified as a possible analog to the salicylidene acylhydrazide core structure. The synthesis of a library of 2-(2-amino-pyrimidine)-2,2-difluoro-ethanols is described in this paper. PMID:20657451

  17. 40 CFR 721.10001 - 2-Ethoxyethanol, 2-ethoxyethanol acetate, 2-methoxyethanol, and 2-methoxyethanol acetate.

    Science.gov (United States)

    2010-07-01

    ... acetate, 2-methoxyethanol, and 2-methoxyethanol acetate. 721.10001 Section 721.10001 Protection of...-ethoxyethanol acetate, 2-methoxyethanol, and 2-methoxyethanol acetate. (a) Chemical substances and significant...-80-5), 2-ethoxyethanol acetate (CAS No. 111-15-9), 2-methoxyethanol (CAS No. 109-86-4), and...

  18. Oxidative addition of H2 to the A-frame complex [Tr2(CO)2(μ-S)(Ph2PCH2PPh2)2]: a reinvestigation

    International Nuclear Information System (INIS)

    A reinvestigation of the reaction of the A-frame complex [Ir2(CO)2(μ-S)(DPPM)2] (DPPM = Ph2PCH2PPh2) with H2 using improved spectroscopic techniques is reported herein. It is proposed that the reaction is an oxidative addition of H2 at one metal center followed by transfer of one hydride ligand to the other metal and concomitant Ir-Ir bond formation. 23 references, 1 figure, 1 table

  19. A simple and versatile sup 2 sup 2 sup 2 Rn/ sup 2 sup 2 sup 0 Rn exposure chamber

    CERN Document Server

    Yu, K N; Guan, Z J

    2002-01-01

    A simple sup 2 sup 2 sup 2 Rn/ sup 2 sup 2 sup 0 Rn exposure chamber is described. The chamber is made of acrylic and has a volume of 0.41 m sup 3. The sup 2 sup 2 sup 2 Rn and sup 2 sup 2 sup 0 Rn sources can be operated independently or simultaneously. The concentrations of sup 2 sup 2 sup 2 Rn and sup 2 sup 2 sup 0 Rn were monitored by a continuous alpha spectrometer called RAD7. The capability of alpha spectrometry has removed the mutual interference between sup 2 sup 2 sup 0 Rn and sup 2 sup 2 sup 2 Rn, which is a major problem in measuring sup 2 sup 2 sup 0 Rn. Furthermore, the capability can also provide fast response to changes in the sup 2 sup 2 sup 2 Rn level and sup 2 sup 2 sup 0 Rn level in the exposure chamber, with temporal resolutions of about 20 and 2 min, respectively.

  20. SU(2|2) supersymmetric mechanics

    CERN Document Server

    Ivanov, Evgeny; Sidorov, Stepan

    2016-01-01

    We introduce a new kind of non-relativistic ${\\cal N}{=}\\,8$ supersymmetric mechanics, associated with worldline realizations of the supergroup $SU(2|2)$ treated as a deformation of flat ${\\cal N}{=}\\,8$, $d{=}1$ supersymmetry. Various worldline $SU(2|2)$ superspaces are constructed as coset manifolds of this supergroup, and the corresponding superfield techniques are developed. For the off-shell $SU(2|2)$ multiplets $({\\bf 3,8,5})$, $({\\bf 4,8,4})$ and $({\\bf 5,8,3})$, we construct and analyze the most general superfield and component actions. Common features are mass oscillator-type terms proportional to the deformation parameter and a trigonometric realization of the superconformal group $OSp(4^*|4)$ in the conformal cases. For the simplest $({\\bf 5, 8, 3})$ model the quantization is performed.

  1. (2-Pyridyl[5-(2-pyridylcarbonyl-2-pyridyl]methanone

    Directory of Open Access Journals (Sweden)

    Zi-jia Wang

    2010-10-01

    Full Text Available In the centrosymmetric title compound, C17H11N3O2, the dihedral angle between the central and pendant pyridyl rings is 50.29 (9°. In the crystal, molecules stack along the a axis by π–π interactions between the pyridine rings with centroid–centroid distances of 3.845 (2 Å. The N atom and one of the C atoms of the central ring are disordered by symmetry.

  2. Potassium (1-methoxycarbonyl-2-methylprop-2-en-2-ylideneazinate

    Directory of Open Access Journals (Sweden)

    Cédric Reuter

    2010-04-01

    Full Text Available In the title compound, K+·C6H8NO4−, the K+ cations have a coordination number of seven and are surrounded by four bidentate azinate anions. The methylene groups of the anions are always directed towards the coordinated potassium cations. The N—C—C—C torsion angle is 101.2 (2°. The orthogonal non-conjugated nature of the salt confirms the supposed geometry and reactivity of this compound.

  3. Telecom 2-A (TC2A)

    Science.gov (United States)

    Dulac, J.; Latour, J.

    1991-01-01

    The DSN (Deep Space Network) mission support requirements for Telecom 2-A (TC2A) are summarized. The Telecom 2-A will provide high-speed data link applications, telephone, and television service between France and overseas territories. The mission objectives are outlined and the DSN support requirements are defined through the presentation of tables and narratives describing the spacecraft flight profile; DSN support coverage; frequency assignments; support parameters for telemetry, command and support systems; and tracking support responsibility.

  4. A tristable [2]pseudo[2]rotaxane

    KAUST Repository

    Trabolsi, Ali

    2010-01-01

    A strategy towards increasing the lifetime of the metastable state of a [2]rotaxane incorporating tetrathiafulvalene, 1,5-dioxynaphthalene and bipyridinium (BIPY 2+) is presented. Incorporation of BIPY 2+ served multiple roles as an electrostatic barrier to relaxation, a supramolecular recognition site for bis-1,5-dioxynaphthalene[38]crown-10 macrocycle, and upon reduction a recognition site for the mechanically bonded cyclobis(paraquat-p-phenylene) ring. © The Royal Society of Chemistry 2010.

  5. K2SC: K2 Systematics Correction

    Science.gov (United States)

    Aigrain, Suzanne; Parviainen, Hannu; Pope, Benjamin

    2016-05-01

    K2SC (K2 Systematics Correction) models instrumental systematics and astrophysical variability in light curves from the K2 mission. It enables the user to remove both position-dependent systematics and time-dependent variability (e.g., for transit searches) or to remove systematics while preserving variability (for variability studies). K2SC automatically computes estimates of the period, amplitude and evolution timescale of the variability for periodic variables and can be run on ASCII and FITS light curve files. Written in Python, this pipeline requires NumPy, SciPy, MPI4Py, Astropy (ascl:1304.002), and George (ascl:1511.015).

  6. Electronic states of BP, BP +, BP -, B 2P 2, B2P2- and B2P2+

    Science.gov (United States)

    Linguerri, Roberto; Komiha, Najia; Oswald, Rainer; Mitrushchenkov, Alexander; Rosmus, Pavel

    2008-05-01

    Using augmented sextuple zeta basis sets and internally contracted multireference configuration interaction (MRCI) wavefunctions, potential energy, electric dipole and transition moments have been computed for the X 3Π, a 1Σ +, b 1Π and A 3Σ - states of BP, X 2Σ + and A 2Π states of BP - and X 4Σ - and A 4Π states of BP +. From these data spectroscopic constants, radiative transition probabilities and photoelectron spectra of BP - and BP have been evaluated. The non-vanishing spin-orbit coupling elements between the four low lying triplet and singlet states of the neutral BP have also been calculated from MRCI wavefunctions. The treatment of the corresponding perturbations in the manifold of dense rovibrational states in the three lowest states would require a precise knowledge of the electronic excitation energies. Our best singlet-triplet separations (X-a) are calculated to be 2412 cm -1 (MRCI) and 2482 cm -1 (restricted coupled cluster with perturbative triples (RCCSD(T))) with an estimated error bound of about ±200 cm -1. All three states have long radiative lifetimes with cascading among the rovibrational levels of different states. The ionization energy IE e of BP is calculated to be 9.22 eV (MRCI) and 9.48 eV (RCCSD(T)), the electron affinity EA e 2.51 eV (MRCI) and 2.74 eV (RCCSD(T)). The photoelectron spectra of BP and BP - have been obtained from the Franck-Condon factors of the MRCI potentials. For the UV spectroscopy the dipole allowed radiative transition probabilities are given for A 3Σ - ↔ X 3Π, b 1Π ↔ a 1Σ + of BP, A 2Π ↔ X 2Σ + of BP - and A 4Π ↔ X 4Σ - of BP +. The ionization energy IE e of B 2P 2 of 8.71 eV and the electron affinity EA e of 2.34 eV have been calculated by the RCCSD(T)/aVQZ approach. Also the harmonic vibrational wavenumbers for the electronic ground states of the ions B2P2+ and B2P2- are given.

  7. Phospholipase A2 Biochemistry

    OpenAIRE

    Burke, John E.; Dennis, Edward A.

    2008-01-01

    The phospholipase A2 (PLA2) superfamily consists of many different groups of enzymes that catalyze the hydrolysis of the sn-2 ester bond in a variety of different phospholipids. The products of this reaction, a free fatty acid, and lysophospholipid have many different important physiological roles. There are five main types of PLA2: the secreted sPLA2’s, the cytosolic cPLA2’s, the Ca2+ independent iPLA2’s, the PAF acetylhydrolases, and the lysosomal PLA2’s. This review focuses on the superfam...

  8. CO2-Neutral Fuels

    Science.gov (United States)

    Goede, Adelbert; van de Sanden, Richard

    2016-06-01

    Mimicking the biogeochemical cycle of System Earth, synthetic hydrocarbon fuels are produced from recycled CO2 and H2O powered by renewable energy. Recapturing CO2 after use closes the carbon cycle, rendering the fuel cycle CO2 neutral. Non-equilibrium molecular CO2 vibrations are key to high energy efficiency.

  9. Vibrational investigations of CO2-H2O, CO2-(H2O)2, and (CO2)2-H2O complexes isolated in solid neon.

    Science.gov (United States)

    Soulard, P; Tremblay, B

    2015-12-14

    The van der Waals complex of H2O with CO2 has attracted considerable theoretical interest as a typical example of a weak binding complex with a dissociation energy less than 3 kcal/mol. Up to now, experimental vibrational data are sparse. We have studied by FTIR the complexes involving CO2 and water molecules in solid neon. Many new absorption bands close to the well known monomers fundamentals give evidence for at least three (CO2)n-(H2O)m complexes, noted n:m. Concentration effects combined with a detailed vibrational analysis allow for the identification of sixteen, twelve, and five transitions for the 1:1, 1:2, and 2:1 complexes, respectively. Careful examination of the far infrared spectral region allows the assignment of several 1:1 and 1:2 intermolecular modes, confirmed by the observation of combinations of intra + intermolecular transitions, and anharmonic coupling constants have been derived. Our results demonstrate the high sensibility of the solid neon isolation to investigate the hydrogen-bonded complexes in contrast with the gas phase experiments for which two quanta transitions cannot be easily observed.

  10. Maladi Kolera 2 PSA (:30) (Cholera 2)

    Centers for Disease Control (CDC) Podcasts

    2010-02-18

    This is an important public health announcement about cholera prevention and food preparation tips you can use to prevent the spread of disease. Language: Haitian Creole.  Created: 2/18/2010 by Centers for Disease Control and Prevention (CDC).   Date Released: 2/18/2010.

  11. Vibrational investigations of CO2-H2O, CO2-(H2O)2, and (CO2)2-H2O complexes isolated in solid neon

    Science.gov (United States)

    Soulard, P.; Tremblay, B.

    2015-12-01

    The van der Waals complex of H2O with CO2 has attracted considerable theoretical interest as a typical example of a weak binding complex with a dissociation energy less than 3 kcal/mol. Up to now, experimental vibrational data are sparse. We have studied by FTIR the complexes involving CO2 and water molecules in solid neon. Many new absorption bands close to the well known monomers fundamentals give evidence for at least three (CO2)n-(H2O)m complexes, noted n:m. Concentration effects combined with a detailed vibrational analysis allow for the identification of sixteen, twelve, and five transitions for the 1:1, 1:2, and 2:1 complexes, respectively. Careful examination of the far infrared spectral region allows the assignment of several 1:1 and 1:2 intermolecular modes, confirmed by the observation of combinations of intra + intermolecular transitions, and anharmonic coupling constants have been derived. Our results demonstrate the high sensibility of the solid neon isolation to investigate the hydrogen-bonded complexes in contrast with the gas phase experiments for which two quanta transitions cannot be easily observed.

  12. 2-(Prop-2-enyloxy)benzamide

    Science.gov (United States)

    Bugenhagen, Bernhard; Al Jasem, Yosef; Barkhad, Farah; Hindawi, Bassam al; Thiemann, Thies

    2012-01-01

    In the title mol­ecule, C10H11NO2, the benzene ring forms dihedral angles of 33.15 (2) and 6.20 (2)° with the mean planes of the amide and propen­oxy groups, respectively. The amide –NH2 group is oriented toward the propen­oxy substituent and forms a weak intra­molecular N—H⋯O hydrogen bond to the propen­oxy O atom. The conformation of the propen­oxy group at the Csp 2—Csp 3 and Csp 3—O bonds is synperiplanar and anti­periplanar, respectively. In the crystal, N—H⋯O hydrogen bonds involving the amide groups generate C(4) and R 2 3(7) motifs that organize the mol­ecules into tapes along the a-axis direction. There are C—H⋯π inter­actions between the propen­oxy –CH2 group and the aromatic system of neighboring mol­ecules within the tape. The mean planes of the aromatic ring and the propen­oxy group belonging to mol­ecules located on opposite sites of the tape form an angle of 83.16 (2)°. PMID:23284483

  13. Tris[2-(pyrrol-2-ylmethyleneaminoethyl]amine

    Directory of Open Access Journals (Sweden)

    Hongbing Fu

    2008-03-01

    Full Text Available The title compound, C21H27N7, was synthesized by reaction of tris(2-aminoethylamine and pyrrole-2-carbaldehyde in ethanol at room temperature. The structure is stabilized by intra- and intermolecular C—H...N and N—H...N hydrogen-bonding interactions.

  14. ITER EDA newsletter. V. 2, no. 2

    International Nuclear Information System (INIS)

    This issue of the ITER EDA (Engineering Design Activities) Newsletter contains a progress report by the Director, a report on the completion of the first activities of the Special Work Group 2 (SWG-2), a report on a magnet technical meeting, held at Naka, Japan, 26-29 January 1993, and on the US Home Team National Meeting, 25-26 January 1993

  15. 2-Amino-5-bromopyridinium 2-hydroxybenzoate

    Directory of Open Access Journals (Sweden)

    Ching Kheng Quah

    2010-08-01

    Full Text Available In the title compound, C5H6BrN2+·C7H5O3−, the 2-amino-5-bromopyridinium cation and 2-hydroxybenzoate anion are essentially planar with maximum deviations of 0.020 (1 and 0.018 (2 Å, respectively. The anion is stabilized by an intramolecular O—H...O hydrogen bond, which generates an S(6 ring motif. In the crystal, the cations and anions are linked by N—H...O hydrogen bonds into chains propagating along [010]. The chains contain R22(8 ring motifs. The structure is further stabilized by π–π stacking interactions [centroid–centroid distances = 3.4908 (10 and 3.5927 (10 Å] and also features short Br...O contacts [2.9671 (13 Å].

  16. 2-(Prop-2-enyloxy)benzamide

    OpenAIRE

    Bugenhagen, Bernhard; Al Jasem, Yosef; Barkhad, Farah; Hindawi, Bassam al; Thiemann, Thies

    2012-01-01

    In the title mol­ecule, C10H11NO2, the benzene ring forms dihedral angles of 33.15 (2) and 6.20 (2)° with the mean planes of the amide and propen­oxy groups, respectively. The amide –NH2 group is oriented toward the propen­oxy substituent and forms a weak intra­molecular N—H⋯O hydrogen bond to the propen­oxy O atom. The conformation of the propen­oxy group at the Csp 2—Csp 3 and Csp 3—O bonds is synperiplanar and anti­periplanar, respectively. In the crystal, N—H⋯O hydrogen bonds involving th...

  17. Safety Testing of AGR-2 UCO Compacts 5-2-2, 2-2-2, and 5-4-1

    Energy Technology Data Exchange (ETDEWEB)

    Hunn, John D [ORNL; Morris, Robert Noel [ORNL; Baldwin, Charles A [ORNL; Montgomery, Fred C [ORNL

    2016-10-01

    Post-irradiation examination (PIE) is being performed on tristructural-isotropic (TRISO) coated-particle fuel compacts from the Advanced Gas Reactor (AGR) Fuel Development and Qualification Program second irradiation experiment (AGR-2) [Collin 2014]. This effort builds upon the understanding acquired throughout the AGR-1 PIE campaign [Demkowicz et al. 2015a] and is establishing a database for the different AGR-2 fuel designs. The AGR-2 irradiation experiment included TRISO fuel particles coated at BWX Technologies (BWXT) with a 150-mm-diameter engineering-scale coater. Two coating batches were tested in the AGR-2 irradiation experiment. Batch 93085 had 508-μm-diameter uranium dioxide (UO2) kernels. Batch 93073 had 427-μm-diameter UCO kernels, which is a kernel design where some of the uranium oxide is converted to uranium carbide during fabrication to provide a getter for oxygen liberated during fission and limit CO production. Fabrication and property data for the AGR-2 coating batches have been compiled [Barnes and Marshall 2009] and compared to AGR-1 [Phillips, Barnes, and Hunn 2010]. The AGR-2 TRISO coatings were most like the AGR-1 Variant 3 TRISO deposited in the 50-mm-diameter ORNL lab-scale coater [Hunn and Lowden 2006]. In both cases argon-dilution of the hydrogen and methyltrichlorosilane coating gas mixture employed to deposit the SiC was used to produce a finer-grain, more equiaxed SiC microstructure [Lowden 2006; Gerczak et al. 2016]. In addition to the fact that AGR-1 fuel had smaller, 350-μm-diameter UCO kernels, notable differences in the TRISO particle properties included the pyrocarbon anisotropy, which was slightly higher in the particles coated in the engineeringscale coater, and the exposed kernel defect fraction, which was higher for AGR-2 fuel due to the detected presence of particles with impact damage introduced during TRISO particle handling [Hunn 2010].

  18. Safety Testing of AGR-2 UCO Compacts 5-2-2, 2-2-2, and 5-4-1

    Energy Technology Data Exchange (ETDEWEB)

    Hunn, John D. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Fusion and Materials for Nuclear Systems Division; Morris, Robert Noel [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Fusion and Materials for Nuclear Systems Division; Baldwin, Charles A. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Fusion and Materials for Nuclear Systems Division; Montgomery, Fred C. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Fusion and Materials for Nuclear Systems Division

    2016-08-01

    Post-irradiation examination (PIE) is being performed on tristructural-isotropic (TRISO) coated-particle fuel compacts from the Advanced Gas Reactor (AGR) Fuel Development and Qualification Program second irradiation experiment (AGR-2) [Collin 2014]. This effort builds upon the understanding acquired throughout the AGR-1 PIE campaign [Demkowicz et al. 2015a] and is establishing a database for the different AGR-2 fuel designs. The AGR-2 irradiation experiment included TRISO fuel particles coated at BWX Technologies (BWXT) with a 150-mm-diameter engineering-scale coater. Two coating batches were tested in the AGR-2 irradiation experiment. Batch 93085 had 508-μm-diameter uranium dioxide (UO2) kernels. Batch 93073 had 427-μm-diameter UCO kernels, which is a kernel design where some of the uranium oxide is converted to uranium carbide during fabrication to provide a getter for oxygen liberated during fission and limit CO production. Fabrication and property data for the AGR-2 coating batches have been compiled [Barnes and Marshall 2009] and compared to AGR-1 [Phillips, Barnes, and Hunn 2010]. The AGR-2 TRISO coatings were most like the AGR-1 Variant 3 TRISO deposited in the 50-mm-diameter ORNL lab-scale coater [Hunn and Lowden 2006]. In both cases argon-dilution of the hydrogen and methyltrichlorosilane coating gas mixture employed to deposit the SiC was used to produce a finer-grain, more equiaxed SiC microstructure [Lowden 2006; Gerczak et al. 2016]. In addition to the fact that AGR-1 fuel had smaller, 350-μm-diameter UCO kernels, notable differences in the TRISO particle properties included the pyrocarbon anisotropy, which was slightly higher in the particles coated in the engineeringscale coater, and the exposed kernel defect fraction, which was higher for AGR-2 fuel due to the detected presence of particles with impact damage introduced during TRISO particle handling [Hunn 2010].

  19. ANP3 & NAP2

    DEFF Research Database (Denmark)

    Lindberg, Erik

    1996-01-01

    Modelling and SimulationANP3 introductionNAP2 introductionThe Exended Node EquationsThe input languages of ANP3 and NAP2The output from ANP3 and NAP2Literature......Modelling and SimulationANP3 introductionNAP2 introductionThe Exended Node EquationsThe input languages of ANP3 and NAP2The output from ANP3 and NAP2Literature...

  20. 2-Aminopyridinium (2-aminopyridinetrichloridonickelate(II

    Directory of Open Access Journals (Sweden)

    T. Balasubramanian

    2008-04-01

    Full Text Available In the title compound, (C5H7N2[NiCl3(C5H6N2], the NiII atom is four-coordinated by three chloride anions and one N atom of a 2-aminopyridine ligand, forming a distorted tetrahedral coordination. In the crystal structure, cations and complex anions are linked into chains along the a, b and c axes by N—H...Cl hydrogen bonds, leading to the formation of a three-dimensional framework.

  1. 2-(2-Hydroxy-2-phenylethyl-1-methylcyclopropan-1-ol

    Directory of Open Access Journals (Sweden)

    Hui Mao

    2013-02-01

    Full Text Available The asymmetric unit of the title compound, C12H16O2, contains two independent molecules in which the dihedral angles between the benzene and cyclopropane rings are 75.9 (3 and 76.3 (3°. In the crystal, the molecules are connected by O—H...O hydrogen bonds into a three dimensional supramolecular structure.

  2. N-[Bis(dimethylaminophosphinoyl]-2,2,2-trichloroacetamide

    Directory of Open Access Journals (Sweden)

    Oleksiy V. Amirkhanov

    2010-05-01

    Full Text Available In the title compound, C6H13Cl3N3O2P or CCl3C(ONHP(O(N(CH32, the phosphinoyl group is synclinal to the carbonyl group and acts as an acceptor for an intermolecular N—H...O hydrogen bond from the amide group as the donor.

  3. Peculiarity of aqueous solutions of 2,2,2-trifluoroethanol.

    Science.gov (United States)

    Burakowski, Andrzej; Gliński, Jacek; Czarnik-Matusewicz, Bogusława; Kwoka, Paulina; Baranowski, Andrzej; Jerie, Kazimierz; Pfeiffer, Helge; Chatziathanasiou, Nikos

    2012-01-12

    Aqueous solutions of 2,2,2-trifluoroethanol appear to show a structural transition at alcohol mole fraction equal to x(TFE) = 0.05, which can be concluded from a discontinuity of the speed of sound. At the same concentration, a discontinuity was observed in the parameters of the long-living component of the positron annihilation spectrum. Moreover, the partial molar volumes of components show transition-like behavior in the range of low solute contents, which is significantly different from nonsubstituted ethanol. The peculiarities of the low concentration system correlate with minor infrared spectra changes assigned to a mode composed of the CH(2) bending and CF(3) stretching internal vibrations being sensitive to polarity of the hydration shell surrounding the solute. The majority of the spectral changes arise from a gradual shift of the equilibrium between trans ↔ gauche isomers when the composition of the solution is changing. A possible explanation for the peculiar behavior of the system is a thermodynamic equilibrium between hydrated monomers and dimers at that respective mole number. PMID:22142252

  4. Sc(2)MgGa(2) and Y(2)MgGa(2).

    Science.gov (United States)

    Sahlberg, Martin; Andersson, Yvonne

    2009-03-01

    Scandium magnesium gallide, Sc(2)MgGa(2), and yttrium magnesium gallide, Y(2)MgGa(2), were synthesized from the corresponding elements by heating under an argon atmosphere in an induction furnace. These intermetallic compounds crystallize in the tetragonal Mo(2)FeB(2)-type structure. All three crystallographically unique atoms occupy special positions and the site symmetries of (Sc/Y, Ga) and Mg are m2m and 4/m, respectively. The coordinations around Sc/Y, Mg and Ga are pentagonal (Sc/Y), tetragonal (Mg) and triangular (Ga) prisms, with four (Mg) or three (Ga) additional capping atoms leading to the coordination numbers [10], [8+4] and [6+3], respectively. The crystal structure of Sc(2)MgGa(2 )was determined from single-crystal diffraction intensities and the isostructural Y(2)MgGa(2) was identified from powder diffraction data. PMID:19265212

  5. Geometry of 2×2 hermitian matrices

    Institute of Scientific and Technical Information of China (English)

    HUANG; Liping(黄礼平); WAN; Zhexian(万哲先)

    2002-01-01

    Let D be a division ring which possesses an involution a→ā. Assume that F = {a∈D|a=ā} is a proper subfield of D and is contained in the center of D. It is pointed out that if D is of characteristic not two, D is either a separable quadratic extension of F or a division ring of generalized quaternions over F and that if D is of characteristic two, D is a separable quadratic extension of F. Thus the trace map Tr: D→F,hermitian matrices over D when n≥3 and now can be deleted. When D is a field, the fundamental theorem of 2×2 hermitian matrices over D has already been proved. This paper proves the fundamental theorem of 2×2 hermitian matrices over any division ring of generalized quaternions of characteristic not two.

  6. PAT-2 (Plutonium Air Transportable Model 2)

    International Nuclear Information System (INIS)

    The PAT-2 (Plutonium Air Transportable Model 2) package is designed for the safe transport of plutonium and/or uranium in small quantities, especially as used in international safeguards activities, and especially as transported by air. The PAT-2 package is resistant to severe accidents, including that of a high-speed jet aircraft crash, and is designed to withstand such environments as extreme impact, crushing, puncturing and slashing loads, severe hydrocarbon-fueled fires, and deep underwater immersion, with no escape of contents. The accident environments may be imposed upon the package singly or seqentially. The package meets the requirements of 10 CFR 71 for Fissile Class I packages with a cargo of 15 grams of Pu-239, or other isotopic forms described herein, not to exceed 2 watts of thermal activity. Packaging, operational features, and contents of package, are discussed

  7. Rails2.3.2

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    Ruby on Rails团队在Rails22发布几个月之后,发布了最新版的Rails2.3.2,该版本进行了很多重要的更新。新版的Rails集成了Rack的支持,RallsE一定程度上简化并重写了script/server的基础架构,这意味着Rails能够支持Rack所支持的任何服务器了。此外还重新提供了对Rails Engines的支持。语言方面,Rails2.3.2通过了对Ruby1.9的全部测试。另外,在Active Record、Action Controler、Action View、Action Support和Railties方面也做了大量的重要更新。

  8. MECP2 Duplication Syndrome

    DEFF Research Database (Denmark)

    Signorini, Cinzia; De Felice, Claudio; Leoncini, Silvia;

    2016-01-01

    Rett syndrome (RTT) and MECP2 duplication syndrome (MDS) are neurodevelopmental disorders caused by alterations in the methyl-CpG binding protein 2 (MECP2) gene expression. A relationship between MECP2 loss-of-function mutations and oxidative stress has been previously documented in RTT patients...

  9. Facts about Type 2

    Medline Plus

    Full Text Available ... Type 2 Diabetes Program donate en -- Donate Today - 2016-08-donation-en.html Donate Today Diabetes touches ... Chat Closed engagement en -- Need Type 2 Tips? - 2016-08-lwt2d-en.html Need Type 2 Tips? ...

  10. Does dinitrogen hydrogenation follow different mechanisms for [(eta5-C5Me4H)2Zr]2(mu2,eta2,eta2-N2) and {[PhP(CH2SiMe2NSiMe2CH2)PPh]Zr}2(mu2,eta2,eta2-N2) complexes? A computational study.

    Science.gov (United States)

    Bobadova-Parvanova, Petia; Wang, Qingfang; Quinonero-Santiago, David; Morokuma, Keiji; Musaev, Djamaladdin G

    2006-09-01

    The mechanisms of dinitrogen hydrogenation by two different complexes--[(eta(5)-C(5)Me(4)H)(2)Zr](2)(mu(2),eta(2),eta(2)-N(2)), synthesized by Chirik and co-workers [Nature 2004, 427, 527], and {[P(2)N(2)]Zr}(2)(mu(2),eta(2),eta(2)-N(2)), where P(2)N(2) = PhP(CH(2)SiMe(2)NSiMe(2)CH(2))(2)PPh, synthesized by Fryzuk and co-workers [Science 1997, 275, 1445]--are compared with density functional theory calculations. The former complex is experimentally known to be capable of adding more than one H(2) molecule to the side-on coordinated N(2) molecule, while the latter does not add more than one H(2). We have shown that the observed difference in the reactivity of these dizirconium complexes is caused by the fact that the former ligand environment is more rigid than the latter. As a result, the addition of the first H(2) molecule leads to two different products: a non-H-bridged intermediate for the Chirik-type complex and a H-bridged intermediate for the Fryzuk-type complex. The non-H-bridged intermediate requires a smaller energy barrier for the second H(2) addition than the H-bridged intermediate. We have also examined the effect of different numbers of methyl substituents in [(eta(5)-C(5)Me(n)H(5)(-)(n))(2)Zr](2)(mu(2),eta(2),eta(2)-N(2)) for n = 0, 4, and 5 (n = 5 is hypothetical) and [(eta(5)-C(5)H(2)-1,2,4-Me(3))(eta(5)-C(5)Me(5))(2)Zr](2)(mu(2),eta(2),eta(2)-N(2)) and have shown that all complexes of this type would follow a similar H(2) addition mechanism. We have also performed an extensive analysis on the factors (side-on coordination of N(2) to two Zr centers, availability of the frontier orbitals with appropriate symmetry, and inflexibility of the catalyst ligand environment) that are required for successful hydrogenation of the coordinated dinitrogen.

  11. 1,2,3-Triazoles as inhibitors of indoleamine 2,3-dioxygenase 2 (IDO2).

    Science.gov (United States)

    Röhrig, Ute F; Majjigapu, Somi Reddy; Caldelari, Daniela; Dilek, Nahzli; Reichenbach, Patrick; Ascencao, Kelly; Irving, Melita; Coukos, George; Vogel, Pierre; Zoete, Vincent; Michielin, Olivier

    2016-09-01

    Indoleamine 2,3-dioxygenase 2 (IDO2) is a potential therapeutic target for the treatment of diseases that involve immune escape such as cancer. In contrast to IDO1, only a very limited number of inhibitors have been described for IDO2 due to inherent difficulties in expressing and purifying a functionally active, soluble form of the enzyme. Starting from our previously discovered highly efficient 4-aryl-1,2,3-triazole IDO1 inhibitor scaffold, we used computational structure-based methods to design inhibitors of IDO2 which we then tested in cellular assays. Our approach yielded low molecular weight inhibitors of IDO2, the most active displaying an IC50 value of 51μM for mIDO2, and twofold selectivity over hIDO1. These compounds could be useful as molecular probes to investigate the biological role of IDO2, and could inspire the design of new IDO2 inhibitors. PMID:27469130

  12. 2-(2-Chlorophenyl-N-cyclohexyl-2-oxoacetamide

    Directory of Open Access Journals (Sweden)

    Xiu-Dan Jin

    2013-04-01

    Full Text Available In the title compound, C14H16ClNO2, the cyclohexyl ring has a chair conformation. The dihedral angle between the benzene ring and the mean plane of the four planar C atoms of the cyclohexyl ring is 45.2 (3°. The two carbonyl groups are trans to one another, with an O=C—C=O torsion angle of −137.1 (3°. In the crystal, molecules are linked by N—H...O hydrogen bonds forming chains propagating along [001]. A region of disordered electron density, situated near the unit-cell corners, was treated using the SQUEEZE routine in PLATON [Spek (2009. Acta Cryst. D65, 148–155]. It gave a solvent-accessible void of ca 400 Å3 for only 21 electrons. It is probably due to traces of the solvent of crystallization and was not taken into account during structure refinement.

  13. (2-Butoxyphenylboronic acid

    Directory of Open Access Journals (Sweden)

    Janusz Serwatowski

    2008-02-01

    Full Text Available The title compound, 2-(CH3CH2CH2CH2OC6H4B(OH2, exists as a centrosymmetric hydrogen-bonded dimer. Dimers are linked via C—H...π and π–π [with closest C...C contact of 3.540 (3 Å] interactions to produce a two-dimensional array.

  14. H2O2 space shuttle APU

    Science.gov (United States)

    1975-01-01

    A cryogenic H2-O2 auxiliary power unit (APU) was developed and successfully demonstrated. It has potential application as a minimum weight alternate to the space shuttle baseline APU because of its (1) low specific propellant consumption and (2) heat sink capabilities that reduce the amount of expendable evaporants. A reference system was designed with the necessary heat exchangers, combustor, turbine-gearbox, valves, and electronic controls to provide 400 shp to two aircraft hydraulic pumps. Development testing was carried out first on the combustor and control valves. This was followed by development of the control subsystem including the controller, the hydrogen and oxygen control valves, the combustor, and a turbine simulator. The complete APU system was hot tested for 10 hr with ambient and cryogenic propellants. Demonstrated at 95 percent of design power was 2.25 lb/hp-hr. At 10 percent design power, specific propellant consumption was 4 lb/hp-hr with space simulated exhaust and 5.2 lb/hp-hr with ambient exhaust. A 10 percent specific propellant consumption improvement is possible with some seal modifications. It was demonstrated that APU power levels could be changed by several hundred horsepower in less than 100 msec without exceeding allowable turbine inlet temperatures or turbine speed.

  15. Mated Fingerprint Card Pairs 2 (MFCP2)

    Science.gov (United States)

    NIST Mated Fingerprint Card Pairs 2 (MFCP2) (PC database for purchase)   NIST Special Database 14 is being distributed for use in development and testing of automated fingerprint classification and matching systems on a set of images which approximate a natural horizontal distribution of the National Crime Information Center (NCIC) fingerprint classes. A newer version of the compression/decompression software on the CDROM can be found at the website http://www.nist.gov/itl/iad/ig/nigos.cfm as part of the NBIS package.

  16. CCQE, 2p2h excitations and \

    CERN Document Server

    Nieves, J; Sánchez, F; Vacas, M J Vicente

    2013-01-01

    We analyze the MiniBooNE muon neutrino CCQE-like d\\sigma/dT_\\mu/dcos\\theta_\\mu data using a theoretical model that, among other nuclear effects, includes RPA correlations and 2p2h (multinucleon) mechanisms. These corrections turn out to be essential for the description of the data. We find that MiniBooNE CCQE-like data are fully compatible with former determinations of the nucleon axial mass M_A ~ 1.05 GeV. This is in sharp contrast with several previous analysis where anomalously large values of M_A ~ 1.4 GeV have been suggested. We also show that because of the the multinucleon mechanism effects, the algorithm used to reconstruct the neutrino energy is not adequate when dealing with quasielastic-like events. Finally, we analyze the MiniBooNE unfolded cross section, and show that it exhibits an excess (deficit) of low (high) energy neutrinos, which is an artifact of the unfolding process that ignores 2p2h mechanisms.

  17. Unified Modern Mathematics, Course 2, Part 2.

    Science.gov (United States)

    Secondary School Mathematics Curriculum Improvement Study, New York, NY.

    Topics included in Part 2 of Course II are: real functions; descriptive statistics; transformations in the plane; length, area, and volume; combinatorics; and mass points. The chapter on real functions includes a discussion of properties of functions, composition of functions, inverses of functions and other topics. The chapter on descriptive…

  18. 2,6-Bis(2-chlorobenzylidenecyclohexanone

    Directory of Open Access Journals (Sweden)

    Deyun Liu

    2009-04-01

    Full Text Available In the title molecule, C20H16Cl2O, the central cyclohexanone ring adopts an envelope conformation. The two aromatic rings form a dihedral angle of 30.0 (1°. The crystal packing exhibits weak intermolecular C—H...O hydrogen bonds and short Cl...O contacts [3.213 (3 Å].

  19. Ciencias 2 (Science 2). [Student's Workbook].

    Science.gov (United States)

    Raposo, Lucilia

    Ciencias 2 is the second in a series of elementary science textbooks written for Portuguese-speaking students. The text develops the basic skills that students need to study their surroundings and observe natural facts and phenomena by following scientific methods. The book is composed of 10 chapters and includes 57 lessons. Topics included are…

  20. N-Cyclohexyl-2-oxo-2-phenylacetamide

    Directory of Open Access Journals (Sweden)

    Ze-Jun Jia

    2012-06-01

    Full Text Available In the title compound, C14H17NO2, the two carbonyl groups are oriented with respect to each other with a torsion angle of −129.9 (3°. The cyclohexane ring adopts a chair conformation. In the crystal, molecules are linked by N—H...O hydrogen bonds into a chain running along the a axis.

  1. Facts about Type 2

    Medline Plus

    Full Text Available ... Type 2 Diabetes Risk Test Lower Your Risk Healthy Eating Overweight Smoking High Blood Pressure Physical Activity High ... type 2 can control their blood glucose with healthy eating and being active. But, your doctor may need ...

  2. Sorption Mechanism of Ni2+, Fe2+, Pb2+ and Ba2+ onto Zeolite-X

    International Nuclear Information System (INIS)

    This study examines the factors affecting the performance of synthetic hydrated Na-X zeolite as a sorptive material for Ni2+ , Fe2+, Pb2+ and Ba2+ heavy metal ions from aqueous solutions. Batch experiments were carried out as a function of ph and temperature. Zeolite-X revealed an affinity order for the studied heavy metal ions of Ba2+ > Pb2+ > Fe2+ > Ni+2 . Several kinetic models such as pseudo first-order, pseudo second- order and homogeneous particle diffusion models were used to test the experimental rate data and to examine the controlling mechanism of the sorption process. Results indicated that sorption processes for all studied ions followed the pseudo second-order kinetic model. Values of effective diffusion coefficients and activation energies indicated that the sorption processes were particle diffusion controlled

  3. CO2 -Responsive polymers.

    Science.gov (United States)

    Lin, Shaojian; Theato, Patrick

    2013-07-25

    This Review focuses on the recent progress in the area of CO2 -responsive polymers and provides detailed descriptions of these existing examples. CO2 -responsive polymers can be categorized into three types based on their CO2 -responsive groups: amidine, amine, and carboxyl groups. Compared with traditional temperature, pH, or light stimuli-responsive polymers, CO2 -responsive polymers provide the advantage to use CO2 as a "green" trigger as well as to capture CO2 directly from air. In addition, the current challenges of CO2 -responsive polymers are discussed and the different solution methods are compared. Noteworthy, CO2 -responsive polymers are considered to have a prosperous future in various scientific areas.

  4. Reference: ARELIKEGHPGDFR2 [PLACE

    Lifescience Database Archive (English)

    Full Text Available ARELIKEGHPGDFR2 Lesnick ML, Chandler VL. Activation of the maize anthocyanin gene a...2 is mediated by an element conserved in many anthocyanin promoters. Plant Physiol. 117: 437-445 (1998). PubMed: 9625696 ...

  5. Facts about Type 2

    Medline Plus

    Full Text Available ... About Type 2 Recently Diagnosed Treatment and Care Blood Glucose Control Complications Medication Doctors, Nurses & More Enroll in the Living With Type 2 Diabetes Program donate en -- Diabetes Must Be Stopped - 2016-06-donation- ...

  6. The system SnCl2-Na2WO4-CHOH(CH2OH)2

    International Nuclear Information System (INIS)

    Using the complex of methods of physicochemical analysis at 20+-0.1 deg C and concentration of initial reagents 0.2 mol/l, the interaction of tin dichloride and sodium tungstate in glycerol is investigated. Viscosity density, specific electric conductivity, refractive index and residual concentrations of liquid phases in the system SnCl2-Na2WO4-CHOH (CH2OH)2 are measured. It is ascertained, that the composition of precipitates, formed under given conditions, corresponds to the compound with the ratio WO42-:Sn2+=1. The measurement of apparent volume of precipitates in the system and their direct chemico-analytical study have confirmed the existence of normal tin tungstate. Thermographic study of the compound synthesized SnWO4x5CHOH (CH2OH)2 is conducted

  7. Cryptanalysis of C2

    DEFF Research Database (Denmark)

    Borghoff, Julia; Knudsen, Lars Ramkilde; Leander, Gregor;

    2009-01-01

    We present several attacks on the block cipher C2, which is used for encrypting DVD Audio discs and Secure Digital cards. C2 has a 56 bit key and a secret 8 to 8 bit S-box. We show that if the attacker is allowed to choose the key, the S-box can be recovered in 2^24 C2 encryptions. Attacking the ...

  8. Type 2 diabetes mellitus

    DEFF Research Database (Denmark)

    DeFronzo, Ralph A; Ferrannini, Ele; Groop, Leif;

    2015-01-01

    Type 2 diabetes mellitus (T2DM) is an expanding global health problem, closely linked to the epidemic of obesity. Individuals with T2DM are at high risk for both microvascular complications (including retinopathy, nephropathy and neuropathy) and macrovascular complications (such as cardiovascular...

  9. Facts about Type 2

    Medline Plus

    Full Text Available ... or insulin to help you meet your target blood glucose levels. Type 2 usually gets worse over time – even if ... About Type 2 Recently Diagnosed Treatment and Care Blood Glucose ... Living With Type 2 Diabetes Program donate en -- Donate Today - 2016- ...

  10. CO2 blood test

    Science.gov (United States)

    Bicarbonate test; HCO3-; Carbon dioxide test; TCO2; Total CO2; CO2 test - serum ... Many medicines can interfere with blood test results. Your health care provider will tell you if you need to stop taking any medicines before you have this test. DO ...

  11. 2-Amino-4-methylpyridinium 2-hydroxybenzoate

    Directory of Open Access Journals (Sweden)

    Madhukar Hemamalini

    2010-08-01

    Full Text Available The asymmetric unit of the title molecular salt, C6H9N2+·C7H5O3−, contains two cations and two anions. Both the salicylate anions contain an intramolecular O—H...O hydrogen bond, which generates an S(6 ring. Both the 2-amino-4-methylpyridine molecules are protonated at their pyridine N atoms. In the crystal, both cations form two N—H...O hydrogen bonds to their adjacent anions, forming ion pairs. Further N—H...O links generate sheets lying parallel to the ab plane. In addition, weak C—H...O bonds and aromatic π–π stacking interactions [centroid–centroid distances = 3.5691 (9 and 3.6215 (9 Å] are observed between the cations and anions.

  12. N′-(Adamantan-2-ylidenethiophene-2-carbohydrazide

    Directory of Open Access Journals (Sweden)

    Adnan A. Kadi

    2011-11-01

    Full Text Available In the title molecule, C15H18N2OS, a small twist is noted, with the dihedral angle between the central carbohydrazone residue (r.m.s. deviation = 0.029 Å and the thiophene ring being 12.47 (10°. The syn arrangement of the amide H and carbonyl O atoms allows for the formation of centrosymmetric dimers via N—H...O hydrogen bonds. These are linked in the three-dimensional structure by C—H...π interactions. The thiophene ring is disordered over two co-planar orientations, the major component having a site-occupancy factor of 0.833 (2.

  13. 2.2.Physical methods in diagnosis

    Institute of Scientific and Technical Information of China (English)

    1993-01-01

    930221 Endoscopic injection sclerotherapy foresophageal varices:studies on methodology andcomplication.FAN Yanhua (樊艳华),et al.Dept Gastroenterol,Sino-Japan FriendshipHosp,Beijing,100029.Chin J Intern Med1992;31(11):695—697.From November 1985 to February 1991,six-ty patients were randomized to three groups ofintravariceal sclerotherapy:(1)many puncturesof low quantity sclerosant;(2)one puncture oflarge quantity sclerosant,and (3)one puncture

  14. Telecom 2-B and 2-C (TC2B and TC2C)

    Science.gov (United States)

    Dulac, J.; Alvarez, H.

    1991-01-01

    The DSN (Deep Space Network) mission support requirements for Telecom 2-B and 2-C (TC2B and TC2C) are summarized. These Telecom missions will provide high-speed data link applications, telephone, and television service between France and overseas territories as a follow-on to TC2A. Mission objectives are outlined and the DSN support requirements are defined through the presentation of tables and narratives describing the spacecraft flight profile; DSN support coverage; frequency assignments; support parameters for telemetry, command and support systems; and tracking support responsibility.

  15. Crystal structure of 3-(2,2-dibromoacetyl-4-hydroxy-2H-chromen-2-one

    Directory of Open Access Journals (Sweden)

    Ameni Brahmia

    2015-02-01

    Full Text Available The title compound, C11H6Br2O4, is a new coumarin derivative obtained from the reaction of 3-acetyl-4-hydroxy-2H-chromen-2-one with bromine in acetic acid. The hydroxyl group in involved in an intramolecular O—H...O hydrogen bond. In the crystal, π–π interactions between the rings of the bicycle [intercentroid distances = 3.498 (2 and 3.539 (2 Å] pack molecules into stacks along the b axis, and weak intermolecular C—H...O hydrogen bonds further link these stacks into layers parallel to the ab plane.

  16. Main: ACIIIPVPAL2 [PLACE

    Lifescience Database Archive (English)

    Full Text Available 246 to -238 of bean (P.v.) PAL2 promoter; ACIII element is required for vascular-specific gene expression; See also ACI...ACIIIPVPAL2 S000194 15-September-2006 (last modified) kehi ACIII element found at -...PVPAL2 (S000192) and ACIIPVPAL2 (S000193); Three AC-elements, which are possible Myb protein bind...ing sites, together with a G-box, interact to direct the complex patterns of tissu-speci...osynthetic enzymes in loblolly pine (Patzlaff et al., 2003); vascular; PAL; PAL2; ACIII; phloem; xylem; stem

  17. Human interleukin 2

    International Nuclear Information System (INIS)

    Using polyclonal and monoclonal antibodies to human recombinant IL-2, the authors developed a sensitive radioimmunoassay (RIA) for quantitation of human IL-2. In this assay, microtitration plates pre-coated with an anti-rIL-2 monoclonal antibody are incubated with serial dilutions of test samples. Captured IL-2 is quantitated by adding an affinity-purified rabbit anti-rIL-2 antibody followed by an 125I-labeled goat anti-rabbit IgG. Antibodies to chemically, synthesized IL-2 peptide could replace the polyspecific rabbit anti-rIL-2 antibody. This configuration was more sensitive than others tested. Serum or plasma fluids, however, inhibited the assay, reducing its sensitivity by approximately 5-fold. This RIA correlated well with the conventional bioassay in measuring IL-2 levels in sera from IL-2-treated patients. This, and similar, RIAs may serve as a useful adjunct or alternative to the conventional IL-2 bioassay in detecting and quantitating human IL-2 in culture supernatants and clinical samples. (Auth.)

  18. LAMA2-related myopathy

    DEFF Research Database (Denmark)

    Løkken, Nicoline; Born, Alfred Peter; Duno, Morten;

    2015-01-01

    INTRODUCTION: Muscular dystrophy caused by LAMA2-gene mutations is an autosomal recessive disease typically presenting as a severe, early-onset congenital muscular dystrophy (CMD). However, milder cases with a limb-girdle type muscular dystrophy (LGMD) have been described. METHODS: In this study......, we assessed the frequency and phenotypic spectrum of LAMA2-related muscular dystrophy in CMD (n = 18) and LGMD2 (n = 128) cohorts identified in the last 15 years in eastern Denmark. The medical history, brain-MRI, muscle pathology, muscle laminin-α2 expression, and genetic analyses were assessed...... dystrophy and its prevalence in an LGMD2 cohort, which indicates that LAMA2 muscular dystrophy should be included in the LGMD2 nomenclature....

  19. Angiotensin type 2 receptors

    DEFF Research Database (Denmark)

    Sumners, Colin; de Kloet, Annette D; Krause, Eric G;

    2015-01-01

    In most situations, the angiotensin AT2-receptor (AT2R) mediates physiological actions opposing those mediated by the AT1-receptor (AT1R), including a vasorelaxant effect. Nevertheless, experimental evidence vastly supports that systemic application of AT2R-agonists is blood pressure neutral....... However, stimulation of AT2R locally within the brain or the kidney apparently elicits a systemic blood pressure lowering effect. A systemic effect of AT2R stimulation on blood pressure can also be achieved, when the prevailing effect of continuous background AT1R-stimulation is attenuated by low-dose AT1......R blockade. Despite a lack of effect on blood pressure, AT2R stimulation still protects from hypertensive end-organ damage. Current data and evidence therefore suggest that AT2R agonists will not be suitable as future anti-hypertensive drugs, but that they may well be useful for end-organ protection...

  20. Photolysis of H2O-H2O2 Mixtures: The Destruction of H2O2

    Science.gov (United States)

    Loeffler, M. J.; Fama, M.; Baragiola, R. A.; Carlson, R. W.

    2013-01-01

    We present laboratory results on the loss of H2O2 in solid H2O + H2O2 mixtures at temperatures between 21 and 145 K initiated by UV photolysis (193 nm). Using infrared spectroscopy and microbalance gravimetry, we measured the decrease of the 3.5 micrometer infrared absorption band during UV irradiation and obtained a photodestruction cross section that varies with temperature, being lowest at 70 K. We use our results, along with our previously measured H2O2 production rates via ionizing radiation and ion energy fluxes from the spacecraft to compare H2O2 creation and destruction at icy satellites by ions from their planetary magnetosphere and from solar UV photons. We conclude that, in many cases, H2O2 is not observed on icy satellite surfaces because the H2O2 photodestruction rate is much higher than the production rate via energetic particles, effectively keeping the H2O2 infrared signature at or below the noise level.

  1. A search for superdeformed and hyperdeformed states in $^{2}^{2}^{2}Th$ and $^{2}^{3}^{2}U$

    CERN Document Server

    Hawcroft, D

    2000-01-01

    sup 2 sup 2 Th potential energy surface which would be emitted prior to a decay out of the well by fission. Nuclear states in sup 2 sup 3 sup 2 U were investigated through conversion electron spectroscopy using the SACRED multi-element electron detection system. The high segmentation of the silicon detector array enabled us to detect multiple electrons simultaneously and therefore enhance the sensitivity of the experiment towards bands with high electron multiplicity. The sup 2 sup 3 sup 2 Th (alpha,4n) sup 2 sup 3 sup 2 U reaction was used with a beam energy of 42 MeV. In all three cases no evidence towards the existence of superdeformed states in sup 2 sup 2 sup 2 Th or sup 2 sup 3 sup 2 U or hyperdeformed states in sup 2 sup 3 sup 2 U were found. The experimental data were used to determine upper limits for the reaction cross sections leading to the population of states in the second or third minima in the potential energy surfaces. These upper limit cross sections were evaluated as: 900 mu b for the popul...

  2. Perancangan dan Simulasi MRAC untui Proses Pengendalian Temperatur pada Continuous Stirred Tank Reactor (CSTR

    Directory of Open Access Journals (Sweden)

    Amelia Sylvia

    2014-03-01

    Full Text Available Temperatur merupakan salah satu variabel proses dasar yang dikendalikan untuk menjaga suhu cairan di dalam reaktor. Model Reference Adaptive Controller (MRAC dengan MIT rule dipilih untuk mencapai spesifikasi respon yang diinginkan pada CSTR. Beban yang bervariasi berupa debit aliran likuid yang masuk ke dalam reaktor dapat menyebabkan perubahan parameter yang mempengaruhi perubahan temperatur output produk pada CSTR. Sebuah simulasi dilakukan dengan menggunakan MATLAB dan hasilnya dianalisa. Respon plant dapat melakukan adaptasi parameter – parameter kontrolernya cukup baik pada nilai gain adaptasi dengan rentang 0.00000010000 sampai 0.00000000001. Waktu yang dibutuhkan untuk mengatasi beban yang bervariasi berupa debit aliran yang masuk ke dalam reaktor dengan nilai yang maksimal (1.5 m^3/min menghasilkan respon plant lebih cepat 42 detik dari pada debit aliran masuk dengan nilai yang nominal (1 m^3/min 63 detik dan minimal (0.5 m^3/min 75 detik.

  3. P2X receptors.

    Science.gov (United States)

    North, R Alan

    2016-08-01

    Extracellular adenosine 5'-triphosphate (ATP) activates cell surface P2X and P2Y receptors. P2X receptors are membrane ion channels preferably permeable to sodium, potassium and calcium that open within milliseconds of the binding of ATP. In molecular architecture, they form a unique structural family. The receptor is a trimer, the binding of ATP between subunits causes them to flex together within the ectodomain and separate in the membrane-spanning region so as to open a central channel. P2X receptors have a widespread tissue distribution. On some smooth muscle cells, P2X receptors mediate the fast excitatory junction potential that leads to depolarization and contraction. In the central nervous system, activation of P2X receptors allows calcium to enter neurons and this can evoke slower neuromodulatory responses such as the trafficking of receptors for the neurotransmitter glutamate. In primary afferent nerves, P2X receptors are critical for the initiation of action potentials when they respond to ATP released from sensory cells such as taste buds, chemoreceptors or urothelium. In immune cells, activation of P2X receptors triggers the release of pro-inflammatory cytokines such as interleukin 1β. The development of selective blockers of different P2X receptors has led to clinical trials of their effectiveness in the management of cough, pain, inflammation and certain neurodegenerative diseases.This article is part of the themed issue 'Evolution brings Ca(2+) and ATP together to control life and death'. PMID:27377721

  4. ALOS-2 initial results

    Science.gov (United States)

    Kankaku, Yukihiro; Suzuki, Shinichi; Shimada, Masanobu

    2015-10-01

    The Advanced Land Observing Satellite-2 (ALOS-2) was launched from Tanegashima Space Center by H-IIA rocket successfully on 24th May 2014. ALOS-2 carries the Phased Array type L-band Synthetic Aperture Radar-2 (PALSAR-2) as the state-of-the-art L-band SAR system which succeeds to PALSAR onboard ALOS. PALSAR-2 uses almost whole bandwidth allocated for L-band active sensor of Earth Exploration Satellites Service specified by the Radio Regulation in order to realize the high resolution observation, and also, it transmits more than 6 kW power for lower Noise Equivalent Sigma Zero using 180 TRMs driven by Gallium Nitride (GaN) amplifier which is the first use in space. Furthermore, because ALOS-2 carries the SAR system only, PALSAR-2 antenna can be mounted under the satellite body. It enables to observe right-/left-looking observation by satellite maneuvering. And the high accuracy orbit control to maintain the satellite within 500 m radius tube against the reference orbit enables high coherence for the InSAR processing. Using these new technologies, ALOS-2 has been operating to fulfill the mission requirements such as disaster monitoring and so on. This document introduces the initial result of ALOS-2 from the first year operation.

  5. European wind turbine standards 2 (EWTS-2)

    Energy Technology Data Exchange (ETDEWEB)

    Pierik, J.T.G.; Dekker, J.W.M.; Braam, H. [and others

    1999-03-01

    A summary is given of the main results of the European Wind Turbine Standards II project. EWTS-II was completed in 1998 and included investigations on: 1) wind farms-wind field and turbine loading; 2) complex terrain and fatigue loading; 3) extreme wind conditions; 4) quantification of failure probabilities; 5) integration of blade tests in design; 6) power performance in complex terrain; 7) site evaluation. In addition to these scientific evaluations, the EWTS-II participants established an organization of qualified measuring institute in the field of wind energy, the MEASNET organization. MEASNET unified measurement procedures of the participating institutes and guarantees qualified measurements and mutual acceptance among its members. (LN)

  6. (S-2-[(2-Hydroxybenzylazaniumyl]-4-(methylsulfanylbutanoate

    Directory of Open Access Journals (Sweden)

    Giovanna Brancatelli

    2011-06-01

    Full Text Available The zwitterionic title compound, C12H17NO3S, is a reduced Schiff base derived from (S-N-(2-hydroxybenzylidenemethionine. An intramolecular interaction between the N—H and carboxylate groups forms a roughly planar (r.m.s. deviation = 0.1405 Å five-membered ring containing the H(N, N, Cα, C(carboxylate and O atoms in a pentagonal conformation. In the crystal, a supramolecular triangle-shaped motif is generated by molecules held together by O—H...O and N—H...O hydrogen bonds.

  7. Fatigue Crack Growth Characteristics of Thin Sheet Titanium Alloy Ti 6-2-2-2-2

    Science.gov (United States)

    Smith, Stephen W.; Piascik, Robert S.

    2001-01-01

    Fatigue crack growth rates of Ti 6-2-2-2-2 as a function of stress ratio, temperature (24 or 177 C), tensile orientation and environment (laboratory air or ultrahigh vacuum) are presented. Fatigue crack growth rates of Ti 6-2-2-2-2 are also compared with two more widely used titanium alloys (Timetal 21S and Ti 6Al-4V). The fatigue crack growth rate (da/dN) of Ti 6-2-2-2-2 in laboratory air is dependent upon stress ratio (R), particularly in the near-threshold and lower-Paris regimes. For low R (less than approximately 0.5), da/dN is influenced by crack closure behavior. At higher R (> 0.5), a maximum stress-intensity factor (K(sub max)) dependence is observed. Fatigue crack growth behavior is affected by test temperature between 24 and 177 C. For moderate to high applied cyclic-stress-intensity factors (delta-K), the slope of the log da/dN versus log delta-K curve is lower in 177 C laboratory air than 24 C laboratory air. The difference in slope results in lower values of da/dN for exposure to 177 C laboratory air compared to room temperature laboratory air. The onset of this temperature effect is dependent upon the applied R. This temperature effect has not been observed in ultrahigh vacuum. Specimen orientation has been shown to affect the slope of the log da/dN versus log delta-K curve in the Paris regime.

  8. Wearable CO2 sensor

    OpenAIRE

    Radu, Tanja; Fay, Cormac; Lau, King-Tong; Waite, Rhys; Diamond, Dermot

    2009-01-01

    High concentrations of CO2 may develop particularly in the closed spaces during fires and can endanger the health of emergency personnel by causing serious physiological effects. The proposed prototype provides real-time continuous monitoring of CO2 in a wearable configuration sensing platform. A commercially available electrochemical CO2 sensor was selected due to its selectivity, sensitivity and low power demand. This was integrated onto an electronics platform that performed signal capture...

  9. Reactor BR2

    Energy Technology Data Exchange (ETDEWEB)

    Gubel, P

    2000-07-01

    The BR2 reactor is still SCK-CEN's most important nuclear facility. After an extensive refurbishment to compensate for the ageing of the installation, the reactor was restarted in April 1997. Various aspects concerning the operation of the BR2 Reactor, the utilisation of the CALLISTO loop and the irradiation programme, the BR2 R and D programme and the production of isotopes and of NTD-silicon are discussed. Progress and achievements in 1999 are reported.

  10. Electrochemical CO2 reduction

    OpenAIRE

    Kriescher, Stefanie M. A.

    2015-01-01

    The atmospheric concentration of CO2 has increased significantly during the last two centuries. Since CO2 is considered to be one of the largest contributors to the greenhouse effect and is postulated to cause global warming, it is important to stabilize and/or reduce its concentration. Apart from regulations for the amount of CO2 that may be emmitted, carbon dioxide capture and storage (CCS), biological and chemical conversions are potential ways to stabilize and/or reduce the atmospheric co...

  11. The Delta 2 launcher

    Science.gov (United States)

    Ousley, Gilbert W., Sr.

    1991-12-01

    The utilization of the Delta 2 as the vehicle for launching Aristoteles into its near Sun synchronous orbit is addressed. Delta is NASA's most reliable launch vehicle and is well suited for placing the present Aristoteles spacecraft into a 400 m circular orbit. A summary of some of the Delta 2 flight parameters is presented. Diagrams of a typical Delta 2 two stage separation are included along with statistics on delta reliability and launch plans.

  12. B2B marketing

    OpenAIRE

    Pospíšilová, Lucie

    2010-01-01

    The main goal of this bachelor thesis is to apply theoretical knowledge in B2B marketing to the example of marketing processes in a particular company, to evaluate the current situation of its activities with regard to B2B principles and to suggest relevant recommendations. The theoretical part focuses on specific characteristics of B2B marketing, describes its differences from marketing on consumer markets, deals with buying behaviour of organizations and specifies particular features of mar...

  13. CO2NNIE

    DEFF Research Database (Denmark)

    Krogh, Benjamin Bjerre; Andersen, Ove; Lewis-Kelham, Edwin;

    2015-01-01

    We propose a system for calculating the personalized annual fuel consumption and CO2 emissions from transportation. The system, named CO2NNIE, estimates the fuel consumption on the fastest route between the frequent destinations of the user. The travel time and fuel consumption estimated are based......% of the actual fuel consumption (4.6% deviation on average). We conclude, that the system provides new detailed information on CO2 emissions and fuel consumption for any make and model....

  14. 2-Hydroxy-4-(prop-2-ynyloxybenzaldehyde

    Directory of Open Access Journals (Sweden)

    D. Velmurugan

    2013-01-01

    Full Text Available The asymmetric unit of the title compound, C10H8O3, contains two independent molecules, both of which are almost planar (r.m.s deviations for all non-H atoms of 0.044 and 0.053 Å. The dihedral angles between the benzene ring and the prop-1-yne group are 3.47 (1 and 3.07 (1° in the two molecules, and the prop-1-yne groups adopt extended conformations. In each molecule, an intramolecular O—H...O hydrogen bond involving the OH and aldehyde substituents forms an S(6 ring. In the crystal, molecules are linked into cyclic centrosymmetric dimers via C—H...O hydrogen bonds, generating R22(14 ring motifs. The crystal structure is further stabilized by aromatic π–π stacking interactions between the benzene rings [centroid–centroid distances = 3.813 (2 and 3.843 (2 Å

  15. Physics at LEP2. Vol. 2

    International Nuclear Information System (INIS)

    This is final report of the Workshop on Physics at LEP2, held at CERN during 1995. The first part of vol. 1 is devoted to aspects of machine physics of particular relevance to experiments, including the energy, luminosity and interaction regions, as well as the measurement of beam energy. The second part of vol. 1 is a relatively concise, but fairly complete, handbook on the physics of e+e- annihilation above the WW threshold and up to √s∼200 GeV. It contains discussions on WW cross-sections and distributions, W mass determination, Standard Model processes, QCD and gamma-gamma physics, as well as aspects of discovery physics, such as Higgs, new particle searches, triple gauge boson couplings and Z'. The second volume contains a review of the existing Monte Carlo generators for LEP2 physics. These include generators for WW physics, QCD and gamma-gamma processes, Bhabha scattering and discovery physics. A special effort was made to co-ordinate the different parts, with a view to achieving a systematic and balanced review of the subject, rather than just publishing a collection of separate contributions. (orig.)

  16. [2Fe-2S] Proteins in chlorosomes

    DEFF Research Database (Denmark)

    Johnson, T. Wade; Li, Hui; Frigaard, Niels-Ulrik;

    2013-01-01

    The chlorosome envelope of Chlorobaculum tepidum contains 10 polypeptides, three of which, CsmI, CsmJ, and CsmX, have an adrenodoxin-like domain harboring a single [2Fe-2S] cluster. Mutants that produced chlorosomes containing two, one, or none of these Fe-S proteins were constructed [Li, H., et al....... (2013) Biochemistry 52, preceding paper in this issue ( DOI: 10.1021/bi301454g )]. The electron paramagnetic resonance (EPR) spectra, g values, and line widths of the Fe-S clusters in individual CsmI, CsmJ, and CsmX proteins were obtained from studies with isolated chlorosomes. The Fe-S clusters...... in these proteins were characterized by EPR and could be differentiated on the basis of their g values and line widths. The EPR spectrum of wild-type chlorosomes could be simulated by a 1:1 admixture of the CsmI and CsmJ spectra. No contribution of CsmX to the EPR spectrum of chlorosomes was observed because of its...

  17. (±)-trans-3-Benzoyl-bicyclo-[2.2.2]octane-2-carboxylic acid.

    Science.gov (United States)

    Lalancette, Roger A; Thompson, Hugh W; Brunskill, Andrew P J

    2008-01-01

    The title keto acid, C(16)H(18)O(3), displays significant twisting of all three ethyl-ene bridges in its bicyclo-[2.2.2]octane structure owing to steric inter-actions; the bridgehead-to-bridgehead torsion angles are 13.14 (12), 13.14 (13) and 9.37 (13)°. The compound crystallizes as centrosymmetric carboxyl dimers [O⋯O = 2.6513 (12) Å and O-H⋯O = 178°], which have two orientations within the cell and contain no significant carboxyl disorder. PMID:21201657

  18. (±-trans-3-Benzoylbicyclo[2.2.2]octane-2-carboxylic acid

    Directory of Open Access Journals (Sweden)

    Andrew P. J. Brunskill

    2008-09-01

    Full Text Available The title keto acid, C16H18O3, displays significant twisting of all three ethylene bridges in its bicyclo[2.2.2]octane structure owing to steric interactions; the bridgehead-to-bridgehead torsion angles are 13.14 (12, 13.14 (13 and 9.37 (13°. The compound crystallizes as centrosymmetric carboxyl dimers [O...O = 2.6513 (12 Å and O—H...O = 178°], which have two orientations within the cell and contain no significant carboxyl disorder.

  19. Web 2.0

    CERN Document Server

    Han, Sam

    2012-01-01

    Web 2.0 is a highly accessible introductory text examining all the crucial discussions and issues which surround the changing nature of the World Wide Web. It not only contextualises the Web 2.0 within the history of the Web, but also goes on to explore its position within the broader dispositif of emerging media technologies.The book uncovers the connections between diverse media technologies including mobile smart phones, hand-held multimedia players, ""netbooks"" and electronic book readers such as the Amazon Kindle, all of which are made possible only by the Web 2.0. In addition, Web 2.0 m

  20. Main: ACIIPVPAL2 [PLACE

    Lifescience Database Archive (English)

    Full Text Available 1 to -120 of bean (P.v.) PAL2 promoter; ACII element is required for vascular-specific gene expression; See also ACI...ACIIPVPAL2 S000193 15-September-2006 (last modified) kehi ACII element found at -13...PVPAL2 (S000192) and ACIIIPVPAL2 (S000194); Three AC-elements, which are possible Myb protein bindin...g sites, together with a G-box, interact to direct the complex patterns of tissu-speci...ynthetic enzymes in loblolly pine (Patzlaff et al., 2003); vascular; PAL; ACII; phloem; xylem; stem; lignin;

  1. Main: ACIPVPAL2 [PLACE

    Lifescience Database Archive (English)

    Full Text Available o -74 of bean (P.v.) PAL2 promoter; AC-rich element; ACI element is required for vascular-specific gene expression; See also ACI...ACIPVPAL2 S000192 15-September-2006 (last modified) kehi ACI element found at -83 t...IPVPAL2 (S000193) and ACIIIPVPAL2 (S000194); Three AC-elements, which are possible Myb p...rotein binding sites, together with a G-box, interact to direct the complex patterns of tissue-speci...ng lignin biosynthetic enzymes in loblolly pine (Patzlaff et al., 2003); vascular; PAL; ACI; phloem; xylem;

  2. CRAC2 model description

    International Nuclear Information System (INIS)

    The CRAC2 computer code is a revised version of CRAC (Calculation of Reactor Accident Consequences) which was developed for the Reactor Safety Study. This document provides an overview of the CRAC2 code and a description of each of the models used. Significant improvements incorporated into CRAC2 include an improved weather sequence sampling technique, a new evacuation model, and new output capabilities. In addition, refinements have been made to the atmospheric transport and deposition model. Details of the modeling differences between CRAC2 and CRAC are emphasized in the model descriptions

  3. Comparison of [Ni(PPh2NPh2)2(CH3CN)]2+ and [Pd(PPh2NPh2)2]2+ as Electrocatalysts for H2 Production

    Energy Technology Data Exchange (ETDEWEB)

    Wiedner, Eric S.; Helm, Monte L.

    2014-09-22

    The complexes [Ni(PPh2NPh2)2(CH3CN)]2+ and [Pd(PPh2NPh2)2]2+, where PPh2NPh2 is 1,5-diphenyl-3,7-diphenyl-1,5-diaza-3,7-diphosphacyclooctane, are compared as electrocatalysts for H2 production under identical experimental conditions. With [(DMF)H]+ as the acid in acetonitrile solution, [Pd(PPh2NPh2)2]2+ afforded a turnover frequency (TOF) of 230 s-1 for formation of H2 under dry conditions and a TOF of 640 s-1 when H2O was added. These rates are similar to the TOF’s of 590 s-1 (dry) and 720 s-1 (wet) that were previously measured for [Ni(PPh2NPh2)2(CH3CN)]2+ using [(DMF)H]+. The [Ni(PPh2NPh2)2(CH3CN)]2+ and [Pd(PPh2NPh2)2]2+ complexes both exhibited large current enhancements when treated with trifluoroacetic acid (TFA). At a TFA concentration of 1.8 M, TOF values of 5670 s-1 and 2060 s-1 were measured for [Ni(PPh2NPh2)2(CH3CN)]2+ and [Pd(PPh2NPh2)2]2+, respectively. The fast rates observed using TFA are, in part, attributed to homoconjugation of TFA in acetonitrile solutions, which decreases the effective pKa of the acid. In support of this hypothesis, dramatically lower rates of H2 production were observed using p anisidinium, which has a pKa comparable to TFA but does not homoconjugate significantly in acetonitrile solutions. This research was supported as part of the Center for Molecular Electrocatalysis, an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences. Pacific Northwest National Laboratory is oper-ated by Battelle for the U.S. Department of Energy.

  4. EVALUASI PENGGUNAAN METILEN BIRU SEBAGAI MEDIATOR ELEKTRON PADA MICROBIAL FUEL CELL DENGAN BIOKATALIS ACETOBACTER ACETI

    Directory of Open Access Journals (Sweden)

    Dani Permana

    2013-05-01

    Full Text Available Microbial fuel cell (MFC merupakan salah satu teknologi sel bahan bakar alternatif yang dapat diperbarui. MFC memanfaatkan proses oksidasi senyawa kimia oleh biokatalis untuk menghasilkan energi listrik daya rendah. Tujuan dari penelitian ini adalah mengetahui kinerja MFC dengan dan tanpa mediator elektron metilen biru (MB menggunakan biokatalis Acetobacter aceti dan substrat glukosa agar diperoleh energi listrik. Metode yang dilakukan adalah peremajaan kultur A. aceti, persiapan inokulum, persiapan reaktor MFC, persiapan media MFC dengan substrat glukosa 2% dengan dan tanpa mediator MB, pencuplikan secara periodik, penentuan kurva pertumbuhan, arus, potensial, kerapatan daya, energi, kadar glukosa dan tingkat keasaman (pH. Hasil penelitian menunjukkan bahwa MFC dengan mediator menghasilkan kuat arus sebesar 0,040 mA, potensial 878 mV, kerapatan daya 0,395 mW/cm2, energi maksimum 3,685 kJ, pemanfaatan glukosa 93,02% dan pH akhir 3,33, sedangkan MFC tanpa mediator menghasilkan kuat arus 0,035 mA, potensial 773 mV, kerapatan daya 0,290 mW/cm2, energi maksimum 2,434 kJ, pemanfaatan glukosa 90,16% dan pH akhir 3,24. Perolehan kerapatan daya pada kedua jenis MFC masih tergolong kecil dan tidak berbeda secara signifikan. Berdasarkan hasil penelitian dapat disimpulkan bahwa penggunaan mediator MB hanya berpengaruh terhadap perolehan potensial pada MFC dengan kondisi perlakuan yang diterapkan dalam penelitian ini.

  5. Outsourcing CO2 Emissions

    Science.gov (United States)

    Davis, S. J.; Caldeira, K. G.

    2009-12-01

    CO2 emissions from the burning of fossil fuels are the primary cause of global warming. Much attention has been focused on the CO2 directly emitted by each country, but relatively little attention has been paid to the amount of emissions associated with consumption of goods and services in each country. This consumption-based emissions inventory differs from the production-based inventory because of imports and exports of goods and services that, either directly or indirectly, involved CO2 emissions. Using the latest available data and reasonable assumptions regarding trans-shipment of embodied carbon through third-party countries, we developed a global consumption-based CO2 emissions inventory and have calculated associated consumption-based energy and carbon intensities. We find that, in 2004, 24% of CO2 emissions are effectively outsourced to other countries, with much of the developed world outsourcing CO2 emissions to emerging markets, principally China. Some wealthy countries, including Switzerland and Sweden, outsource over half of their consumption-based emissions, with many northern Europeans outsourcing more than three tons of emissions per person per year. The United States is both a big importer and exporter of emissions embodied in trade, outsourcing >2.6 tons of CO2 per person and at the same time as >2.0 tons of CO2 per person are outsourced to the United States. These large flows indicate that CO2 emissions embodied in trade must be taken into consideration when considering responsibility for increasing atmospheric greenhouse gas concentrations.

  6. 2-[Hydroxy(2-methoxyphenylmethyl]acrylonitrile

    Directory of Open Access Journals (Sweden)

    M. Bakthadoss

    2012-08-01

    Full Text Available In the title compound, C11H11NO2, the mean planes formed by the benzene ring and the C and N atoms of the acryl group are almost orthogonal to each other, with a dihedral angle of 85.7 (1°. During the structure analysis, it was observed that the unit cell contains large accessible voids, with a volume of 186.9 Å3, which may host disordered solvent molecules. This affects the diffraction pattern, mostly at low scattering angles. Density identified in these solvent-accessible areas was calculated and corrected for using the SQUEEZE routine in PLATON [Spek (2009, Acta Cryst. D65, 148–155]. Despite the presence of the hydroxy group in the molecule, no classical or nonclassical hydrogen bonds are observed in the structure. This may reflect the fact that the O—H group points towards the solvent-accessible void.

  7. Facts about Type 2

    Medline Plus

    Full Text Available ... from Diabetes Forecast® magazine: lp-type-2, In this section Diabetes Basics Type 2 Facts About Type ... ensureArray(data.submitSurveyResponse.errors); $.each(surveyErrors, function () { if (this.errorField) { $('input[name="' + this.errorField + '"]').closest('.form-group') . ...

  8. Main: ARELIKEGHPGDFR2 [PLACE

    Lifescience Database Archive (English)

    Full Text Available ARELIKEGHPGDFR2 S000437 28-November-2004 (last modified) kehi Sequence highly similar to ARE...ck and Chandler 1998); Binding site of R2R3-type MYB factor, GMYB 10 of G. hybrida; anthocyanina; ARE; DRF;

  9. Reference: ARELIKEGHPGDFR2 [PLACE

    Lifescience Database Archive (English)

    Full Text Available ndler VL, Grotewold E. Different mechanisms participate in the R-dependent activity of the R2R3 MYB transcription factor C1. J Biol Chem. 279: 48205-48213 (2004). PubMed: 15347654 ... ...ARELIKEGHPGDFR2 Hernandez JM, Heine GF, Irani NG, Feller A, Kim MG, Matulnik T, Cha

  10. Main: 2SSEEDPROTBANAPA [PLACE

    Lifescience Database Archive (English)

    Full Text Available 2SSEEDPROTBANAPA S000143 10-May-1998 (last modified) kehi Conserved in many storage...-protein gene promoters; May be important for high activity of the napA promoter; storage protein; ABRE; napA; 2S; seed; Brassica napus; CAAACAC ...

  11. Diabetes Type 2

    Science.gov (United States)

    Diabetes means your blood glucose, or blood sugar, levels are too high. With type 2 diabetes, the more common type, your body does not ... You have a higher risk of type 2 diabetes if you are older, obese, have a family ...

  12. Multiple Stages 2

    DEFF Research Database (Denmark)

    Andreasen, John

    Multiple stages 2: theatrical futures, set design, community plays, cultural capitals, democracy & drama, WWII dramas, performance on adoption, promenade about emigration, qualities in political theatre, performance analysis, dramaturgical education, Toulmin Variations......Multiple stages 2: theatrical futures, set design, community plays, cultural capitals, democracy & drama, WWII dramas, performance on adoption, promenade about emigration, qualities in political theatre, performance analysis, dramaturgical education, Toulmin Variations...

  13. Facts about Type 2

    Medline Plus

    Full Text Available ... Where Do I Begin With Type2? Living With Type 1 Diabetes Enroll in the Living WIth Type 2 Diabetes ... Low-Calorie Sweeteners Sugar and Desserts Fitness Exercise & Type 1 Diabetes Get Started Safely Get And Stay Fit Types ...

  14. 2.GENERAL TREATMENT

    Institute of Scientific and Technical Information of China (English)

    1993-01-01

    2.2.Physical method of treatment930623 Clinical observation of Budd-Chiari syn-drome treated by balloon angioplasty(report of 24cases).XU Ke,et al.Dept Radiol,1st Hosp,China Med Univ,Shenyang,110001.Chin J Radiol1993;27(7):439—442.

  15. Comment: 2 [Taxonomy Icon

    Lifescience Database Archive (English)

    Full Text Available bottlenosed dolphin Tursiops truncatus Tursiops_truncatus_L.png 2.png Taxonomy icon (c) Database Cen...ter for Life Science licensed under CC Attribution2.1 Japan サンプルの投稿です ttamura 2008/10/29 11:43:57 ...

  16. Reference: ACIPVPAL2 [PLACE

    Lifescience Database Archive (English)

    Full Text Available ACIPVPAL2 Hatton D, Sablowski R, Yung MH, Smith C, Schuch W, Bevan M Tow classes of ci...s sequences contribute to tissue-specific expression of a PAL2 promoter in transgenic tobacco Plant J 7:859-876 (1995) PubMed: 7599647; ...

  17. Reference: ACIIPVPAL2 [PLACE

    Lifescience Database Archive (English)

    Full Text Available ACIIPVPAL2 Hatton D, Sablowski R, Yung MH, Smith C, Schuch W, Bevan M Tow classes of ci...s sequences contribute to tissue-specific expression of a PAL2 promoter in transgenic tobacco Plant J 7:859-876 (1995) PubMed: 7599647; ...

  18. Douglas RD-2 Dolphin

    Science.gov (United States)

    1940-01-01

    Douglas RD-2 Dolphin: Originally purchased with the presumed use as a Presidential aircraft, this Douglas RD-2 was turned over to the NACA in December 1939 without ever fulfilling its intended role. The Dolphin was a type familiar to the NACA, who were testing a Army version of the Douglas amphibian, an OA-4V with a nosewheel.

  19. Type 2 diabetes models

    DEFF Research Database (Denmark)

    Gram, Dorte Xenia

    2012-01-01

    This chapter deals with type 2 diabetes in vivo models and techniques suitable for testing new anti-diabetic compounds. In particular, the testing of TRP antagonist for beneficial effects against type 2 diabetes is considered. There are many choices of both in vitro techniques and in vivo models...

  20. DOE-2 basics

    Energy Technology Data Exchange (ETDEWEB)

    1991-08-01

    DOE-2 provides the building design and research communities with an up-to-date, unbiased, well-documented public-domain computer program for building energy analysis. DOE-2 predicts the hourly energy use and energy cost of a building given hourly weather information and a description of the building and its HVAC equipment and utility rate structure. DOE-2 is a portable FORTRAN program that can be used on a large variety of computers, including PC`s. Using DOE-2, designers can determine the choice of building parameters that improve energy efficiency while maintaining thermal comfort. The purpose of DOE-2 is to aid in the analysis of energy usage in buildings; it is not intended to be the sole source of information relied upon for the design of buildings. The judgment and experience of the architect/engineer still remain the most important elements of building design.

  1. DOE-2 basics

    Energy Technology Data Exchange (ETDEWEB)

    1991-08-01

    DOE-2 provides the building design and research communities with an up-to-date, unbiased, well-documented public-domain computer program for building energy analysis. DOE-2 predicts the hourly energy use and energy cost of a building given hourly weather information and a description of the building and its HVAC equipment and utility rate structure. DOE-2 is a portable FORTRAN program that can be used on a large variety of computers, including PC's. Using DOE-2, designers can determine the choice of building parameters that improve energy efficiency while maintaining thermal comfort. The purpose of DOE-2 is to aid in the analysis of energy usage in buildings; it is not intended to be the sole source of information relied upon for the design of buildings. The judgment and experience of the architect/engineer still remain the most important elements of building design.

  2. Bis(2,2′-bipyridine(2-hydroxy-2,2-diphenylacetatocopper(II nitrate dihydrate

    Directory of Open Access Journals (Sweden)

    Xuan Xu

    2010-10-01

    Full Text Available In the title complex, [Cu(C14H11O3(C10H8N22]NO3·2H2O, the CuII atom is coordinated by four N atoms from two 2,2′-bipyridine ligands and two O atoms from one benzilate ligand in a distorted octahedral geometry. A supramolecular network is formed via intermolecular O—H...O and C—H...O hydrogen-bonding interactions. π–π stacking interactions between neighboring pyridine rings are also present, the centroid—centroid distance being 3.808 (2 Å.

  3. ER-2 in flight

    Science.gov (United States)

    1996-01-01

    In this film clip, we see an ER-2 on its take off roll and climb as it departs from runway 22 at Edwards AFB, California. In 1981, NASA acquired its first ER-2 aircraft. The agency obtained a second ER-2 in 1989. These airplanes replaced two Lockheed U-2 aircraft, which NASA had used to collect scientific data since 1971. The U-2, and later the ER-2, were based at the Ames Research Center, Moffett Field, California, until 1997. In 1997, the ER-2 aircraft and their operations moved to NASA Dryden Flight Research Center, Edwards, California. Since the inaugural flight for this program, August 31, 1971, NASA U-2 and ER-2 aircraft have flown more than 4,000 data missions and test flights in support of scientific research conducted by scientists from NASA, other federal agencies, states, universities, and the private sector. NASA is currently using two ER-2 Airborne Science aircraft as flying laboratories. The aircraft, based at NASA Dryden, collect information about our surroundings, including Earth resources, celestial observations, atmospheric chemistry and dynamics, and oceanic processes. The aircraft also are used for electronic sensor research and development, satellite calibration, and satellite data validation. The ER-2 is a versatile aircraft well-suited to perform multiple mission tasks. It is 30 percent larger than the U-2 with a 20 feet longer wingspan and a considerably increased payload over the older airframe. The aircraft has four large pressurized experiment compartments and a high-capacity AC/DC electrical system, permitting it to carry a variety of payloads on a single mission. The modular design of the aircraft permits rapid installation or removal of payloads to meet changing mission requirements. The ER-2 has a range beyond 3,000 miles (4800 kilometers); is capable of long flight duration and can operate at altitudes up to 70,000 feet (21.3 kilometers) if required. Operating at an altitude of 65,000 feet (19.8 kilometers) the ER-2 acquires data

  4. Main: O2F3BE2S1 [PLACE

    Lifescience Database Archive (English)

    Full Text Available O2F3BE2S1 S000164 17-May-1998 (last modified) kehi opaque-2 recognition site F3 in ...Bertholletia excelsa (Brazil nut tree) 2S storage protein gene (be2S1); O2 protein binds to F1, F2 and F3 sequences of be2S1... promoter; F3 is hybrid of A/G box; O2; opaque-2; be2S1; seed; Brazil nut tree (Bertholletia excelsa) TCCACGTACT ...

  5. PENGOLAHAN SERBUK LIMBAH BESI MENJADI BESI (III: TINJAUAN KINETIKA MODEL QUASI STEADY STATE

    Directory of Open Access Journals (Sweden)

    Andi Aladin

    2012-02-01

    Full Text Available Telah dilakukan penelitian pengolahan (oksidasi limbah serbuk besi menjadi besi (II dan besi (III menggunakan katalis MnO2. Dipelajari beberapa variabel reaksi yaitu waktu, laju alir udara, suhu, dan massa katalis. Proses oksidasi berlangsung dalam reaktor batch labu leher tiga dilengkapi kompressor sebagai pembangkit udara (oksigen dan kondensor sebagai pendingin balik. Analisis hasil reaksi menggunakan metode titrasi dengan larutan KMnO4. Dicari regim yang menentukan kecepatan reaksi dan dirumuskan persamaan laju reaksi berdasarkan pendekatan model quasi steady state. Disimpulkan bahwa dalam proses oksidasi fero sulfat menjadi feri sulfat menggunakan katalis murni MnO2 dapat didekati cukup baik dengan model quasi steady state (SSE 0,5.10-4. Pada proses tersebut laju oksidasi dikendalikan oleh reaksi kimia, dengan persamaan . Penggunaan katalis MnO2 dalam oksidasi cukup efektif, dapat menghasilkan konversi maksimum 97% dengan waktu reaksi, temperatur, kecepatan pengadukan dan massa (rasio katalis optimum berturut-turut 90 menit, 90oC, 400 rpm dan 0,3.

  6. HIDRORENGKAH METIL ESTER ASAM LEMAK (MEPO MENGGUNAKAN ZEOLIT ALAM TERAKTIVASI HYDROCRACKING OF FATTY ACID METIL ESTER (FAME USING ACTIVATED NATURAL ZEOLITE

    Directory of Open Access Journals (Sweden)

    Lina Mahardiani

    2011-11-01

    Full Text Available Dalam upaya untuk menghasilkan rantai pendek hidrokarbon yang berasal dari minyak sawit, telah dilakukan hidrorengkah metil ester asam lemak (MEPO menggunakan katalis nikel yang diembankan pada zeolit alam aktif (NZA. Zeolit alam (NZ perlakuan asam dilanjutkan dengan kalsinasi selama 1 jam pada suhu 500 oC diperoleh katalis NZA. Impregnasi Ni menggunakan prekusor Ni(NO32.6H2O dilakukan dengan memvariasikan kandungan Ni sebesar 2,5 dan 8% dari berat NZA yang menghasilkan katalis Ni/NZA2, Ni/NZA5 dan Ni/NZA8. Hidrorengkah metil ester asam lemak dilakukan pada reaktor fixed-bed. Kondisi reaksi meliputi waktu retensi 30 menit, laju alir gas hidrogen 20 ml/min dan suhu reaksi 400, 450 dan 500 oC. Produk cair hasil reaksi hidrorengkah dianalisis menggunakan kromatografi gas (GC. Dari proses uji aktivitas katalis didapatkan persentase produk optimum pada jenis katalis Ni/NZA8, yaitu fraksi bensin 29,85% dan fraksi solar 18,03% pada temperatur 500 oC.

  7. KONVERSI KATALITIK MINYAK SAWIT UNTUK MENGHASILKAN BIOFUEL MENGGUNAKAN SILIKA ALUMINA DAN HZSM-5 SINTESIS

    Directory of Open Access Journals (Sweden)

    Nurjannah Nurjannah

    2012-02-01

    Full Text Available Terbatasnya sumber energi fosil menyebabkan perlunya pengembangan energi terbarukan yang berasal dari alam dan dapat diperbaharui. Penggunaan bahan bakar minyak bumi, baik dari penggunaan berupa alat transportasi maupun dari penggunaan oleh industri sangat mencemari lingkungan karena tingkat polusi yang ditimbulkan sangat tinggi sehingga perlu mencari bahan bakar alternatif pengganti bahan bakar gasoline, solar, dan kerosene dari minyak nabati. Penelitian dilakukan dalam dua tahapan yaitu sintesa katalis dan proses katalitik cracking. Silika alumina disintesa menggunakan metode Latourette dan HZSM-5 disintesa menggunakan metode Plank. Hasil sintesa dikarakterisasi dengan Penyerapan Spektroskopi Atomis (AAS menunjukkan bahwa silika alumina dan HZSM-5 mempunyai Si/Al 198 dan 243. Luas permukaan  silika alumina dan HZSM-5 diperoleh dari analisa Brunauer Emmet Teller (BET yaitu 149,91-213,35 m2.g-1 dan ukuran pori rata-rata adalah 13oA. Perengkahan katalitik dilakukan dalam suatu mikroreaktor fixed bed pada temperatur 350-500°C dan laju alir gas N2 100-160 ml.min-1 selama 120 min. Hasil perengkahan dianalisa dengan metode gas kromatografi. Hasil yang diperoleh untuk katalis HZSM-5 fraksi gasoline dengan yield tertinggi 28,87%, kerosene 16,70%, dan diesel 12,20%  pada suhu reaktor 4500C dan laju gas N2 100 ml/menit.

  8. Pembuatan Biodiesel Secara Batch Dengan Memanfaatkan Gelombang Mikro (Microwave

    Directory of Open Access Journals (Sweden)

    Rhesa Purnama Putra

    2012-09-01

    Full Text Available Biodiesel merupakan bioenergi atau bahan bakar nabati yang dibuat dari minyak nabati, baik minyak baru atau bekas penggorengan melalui proses transesterifikasi, esterifikasi, atau proses esterifikasi-transesterifikasi. Tujuan penelitian ini adalah untuk membuat biodiesel dari minyak goreng secara batch melalui proses transesterifikasi dengan menggunakan radiasi mikrowave serta mempelajari berapa daya dan waktu optimal yang diperlukan untuk proses pembuatan biodiesel dengan radiasi microwave dengan katalis CaO, H2SO4, dan tanpa katalis. Dalam penelitian ini digunakan tiga variabel, yaitu daya (Watt;100,200,300,400, waktu (menit; 5,10,15,20 dan jenis katalis; CaO, H2SO4, dan tanpa katalis. Pada tahap persiapan menghitung volume minyak dan metanol yang akan dicampur. Kemudian mencampurnya didalam reaktor. Lalu mendinginkan campuran hingga terbentuk dua lapisan atas dan bawah dilanjutkan dengan melakukan pemisahan lapisan atas (biodiesel dari lapisan bawah (gliserol. Adapun pada tahap analisis, biodiesel hasil reaksi transesterfikasi dianalisa untuk mendapatkan data yield metil ester, densitas, viskositas, dan flash point. Dari penelitian diketahui bahwa hasil yang didapatkan masih belum dapat memenuhi standar biodiesel yang ditetapkan. Katalis CaO dapat memberikan hasil yang lebih baik dibandingkan dengan katalis H2SO4 dan tanpa katalis. Kondisi operasi untuk menghasilkan kualitas yield biodiesel terbaik yaitu pada daya 200 Watt selama 20 menit dengan menggunakan katalis CaO. Yield biodiesel terbesar didapatkan yield sebesar 60,11 %.

  9. Neurofibromatosis type 2.

    Science.gov (United States)

    Evans, D G R

    2015-01-01

    Type 2 neurofibromatosis (NF2) is an autosomal dominant disorder caused by mutations in the NF2 tumor suppressor gene NF2 on chromosome 22. Around 1 in 33000 people are born with an NF2 mutation although more than one-third of the 60% of de novo cases are not conceived with the mutation but this develops later in embryogenesis (mosaics). NF2 has a substantial effect on life expectancy and individuals with a constitutional truncating mutation have the worst prognosis. The vast majority of people with NF2 will develop bilateral vestibular schwannomas with many developing schwannomas on other cranial, spinal and peripheral nerves. Cranial and spinal meningiomas and intraspinal low grade indolent ependymomas are the other major tumor features. Cutaneous features can be subtle with only 70% having evidence of intracutaneous plaque-like schwannomas or subcutaneous lesions on peripheral nerves. Café-au-lait patches are more frequent than in the general population but in only around 1% will meet NIH criteria for NF1. PMID:26564072

  10. ATF2 COMMISSIONING

    CERN Document Server

    Seryi, A; Parker, B; Schulte, D; Delahaye, J P; Tomas, R; Zimmermann, F; Wolski, A; Elsen, E; Sanuki, T; Gianfelice-Wendt, E; Ross, M; Wendt, M; Takahashi, T; Bai, S; Gao, J; Bolzon, B; Geffroy, N; Jeremie, A; Apsimon, R; Burrows, P; Constance, B; Perry, C; Resta-Lopez, J; Swinson, C; Araki, S; Aryshev, A; Hayano, H; Honda, Y; Kubo, K; Kume, T; Kuroda, S; Masuzawa, M; Naito, T; Okugi, T; Sugahara, R; Tauchi, T; Terunuma, N; Urakawa, J; Yokoya, K; Iwashita, Y; Sugimoto, T; Heo, A Y; Kim, E S; Kim, H S; Bambade, P; Renier, Y; Rimbault, C; Huang, J Y; Kim, S H; Park, Y J; Hwang, W H; Blair, G; Boogert, S; Karataev, P; Molloy, S; Amann, J; Bellomo, P; Lam, B; McCormick, D; Nelson, J; Paterson, E; Pivi, M; Raubenheimer, T; Spencer, C; Wang, M H; White, G; Wittmer, W; Woodley, M; Yan, Y; Zhou, F; Angal-Kalinin, D; Jones, J; Lyapin, A; Scarfe, A; Kamiya, Y; Komamiya, S; Oroku, M; Suehara, T; Yamanaka, T

    2010-01-01

    ATF2 is a final-focus test beam line that aims to focus the low-emittance beam from the ATF damping ring to a beam size of about 37 nm, and at the same time to demonstrate nm beam stability, using numerous advanced beam diagnostics and feedback tools. The construction has been finished at the end of 2008 and the beam commissioning of ATF2 has started in December of 2008. ATF2 is constructed and commissioned by ATF international collaborations with strong US, Asian and European participation.

  11. 2-(4-Methoxyphenoxyacetohydrazide

    Directory of Open Access Journals (Sweden)

    Gang Liu

    2012-06-01

    Full Text Available The title compound, C9H12N2O3, was synthesized by the reaction of ethyl 2-(4-methoxyphenoxyacetate with hydrazine hydrate in ethanol. In the acetohydrazide group, the N—N bond is relatively short [1.413 (2 Å], suggesting some degree of electronic delocalization in the molecule. In the crystal, molecules are linked into sheets lying parallel to the ab plane by N—H...N and N—H...O hydrogen bonds.

  12. The USSO2 Auction

    DEFF Research Database (Denmark)

    Svendsen, Gert Tinggaard; Christensen, J.L.

    1999-01-01

    An annual discriminative and revenue-neutral auction is linked to the new Acid Rain Program which allows electric utilities all over the US to trade SO2 emission permits. This innovative SO2 auction distributes 2% of the permits in circulation and takes place at the Chicago Board of Trade. Early...... results showed that the auction generated a clearing price signal lower than the market price. Now the auction price seems to be determined by the outside market price. Still, in the important starting phase, a non-discriminative auction design would probably have generated better price signals since...

  13. 2-arylureidobenzoic acids

    DEFF Research Database (Denmark)

    Valgeirsson, Jon; Nielsen, Elsebet Ø; Peters, Dan;

    2003-01-01

    A series of 2-arylureidobenzoic acids (AUBAs) was prepared by a short and effective synthesis, and the pharmacological activity at glutamate receptors was evaluated in vitro and in vivo. The compounds showed noncompetitive antagonistic activity at the kainate receptor subtype GluR5. The most potent...... on the benzoic acid moiety (ring A), whereas ring B tolerated a variety of substituents, but with a preference for lipophilic substituents. The most potent compounds had a 4-chloro substituent on ring A and 3-chlorobenzene (6b), 2-naphthalene (8h), or 2-indole (8k) as ring B and had IC(50) values of 1.3, 1...

  14. Lie 2-algebra models

    International Nuclear Information System (INIS)

    In this paper, we begin the study of zero-dimensional field theories with fields taking values in a semistrict Lie 2-algebra. These theories contain the IKKT matrix model and various M-brane related models as special cases. They feature solutions that can be interpreted as quantized 2-plectic manifolds. In particular, we find solutions corresponding to quantizations of ℝ3, S3 and a five-dimensional Hpp-wave. Moreover, by expanding a certain class of Lie 2-algebra models around the solution corresponding to quantized ℝ3, we obtain higher BF-theory on this quantized space

  15. CO2-neutral fuels

    Directory of Open Access Journals (Sweden)

    Goede A. P. H.

    2015-01-01

    Full Text Available The need for storage of renewable energy (RE generated by photovoltaic, concentrated solar and wind arises from the fact that supply and demand are ill-matched both geographically and temporarily. This already causes problems of overcapacity and grid congestion in countries where the fraction of RE exceeds the 20% level. A system approach is needed, which focusses not only on the energy source, but includes conversion, storage, transport, distribution, use and, last but not least, the recycling of waste. Furthermore, there is a need for more flexibility in the energy system, rather than relying on electrification, integration with other energy systems, for example the gas network, would yield a system less vulnerable to failure and better adapted to requirements. For example, long-term large-scale storage of electrical energy is limited by capacity, yet needed to cover weekly to seasonal demand. This limitation can be overcome by coupling the electricity net to the gas system, considering the fact that the Dutch gas network alone has a storage capacity of 552 TWh, sufficient to cover the entire EU energy demand for over a month. This lecture explores energy storage in chemicals bonds. The focus is on chemicals other than hydrogen, taking advantage of the higher volumetric energy density of hydrocarbons, in this case methane, which has an approximate 3.5 times higher volumetric energy density. More importantly, it allows the ready use of existing gas infrastructure for energy storage, transport and distribution. Intermittent wind electricity generated is converted into synthetic methane, the Power to Gas (P2G scheme, by splitting feedstock CO2 and H2O into synthesis gas, a mixture of CO and H2. Syngas plays a central role in the synthesis of a range of hydrocarbon products, including methane, diesel and dimethyl ether. The splitting is accomplished by innovative means; plasmolysis and high-temperature solid oxygen electrolysis. A CO2-neutral fuel

  16. 2-[(2-Hydroxy-2,2-diphenylethyl(methylamino]-N,N-dimethylethanaminium bromide

    Directory of Open Access Journals (Sweden)

    Carsten Strohmann

    2009-02-01

    Full Text Available The title compound, C19H27N2O+·Br−, is the hydrobromide of the trapping product of lithiated N,N,N′,N′-tetramethylethylenediamine (TMEDA with benzophenone. Thereby, the N atom of the NMe2 group is selectively protonated and the respective trapping product represents a potential tridentate ligand with one O and two N donor atoms. The H atoms at N (H2N and O (H1O are involved in hydrogen bonds with the Br−. The molecular structure shows all donor atoms to be arranged on one side of the molecule, thus indicating a potential threefold coordination of a Lewis acid.

  17. Pro Android 2

    CERN Document Server

    Hashimi, S; MacLean, Dave

    2010-01-01

    Pro Android 2 shows you how to build real-world and fun mobile applications using Google's latest Android SDK. This new edition is fully updated for Android 2, covering everything from the fundamentals of building applications for embedded devices to advanced concepts such as custom 3D components, OpenGL, and touchscreens including gestures. While other Android development guides simply discuss topics, Pro Android 2 offers the combination of expert insight and real sample applications that work. * Discover the design and architecture of the Android SDK through practical examples, and how to bu

  18. CO2-neutral fuels

    Science.gov (United States)

    Goede, A. P. H.

    2015-08-01

    The need for storage of renewable energy (RE) generated by photovoltaic, concentrated solar and wind arises from the fact that supply and demand are ill-matched both geographically and temporarily. This already causes problems of overcapacity and grid congestion in countries where the fraction of RE exceeds the 20% level. A system approach is needed, which focusses not only on the energy source, but includes conversion, storage, transport, distribution, use and, last but not least, the recycling of waste. Furthermore, there is a need for more flexibility in the energy system, rather than relying on electrification, integration with other energy systems, for example the gas network, would yield a system less vulnerable to failure and better adapted to requirements. For example, long-term large-scale storage of electrical energy is limited by capacity, yet needed to cover weekly to seasonal demand. This limitation can be overcome by coupling the electricity net to the gas system, considering the fact that the Dutch gas network alone has a storage capacity of 552 TWh, sufficient to cover the entire EU energy demand for over a month. This lecture explores energy storage in chemicals bonds. The focus is on chemicals other than hydrogen, taking advantage of the higher volumetric energy density of hydrocarbons, in this case methane, which has an approximate 3.5 times higher volumetric energy density. More importantly, it allows the ready use of existing gas infrastructure for energy storage, transport and distribution. Intermittent wind electricity generated is converted into synthetic methane, the Power to Gas (P2G) scheme, by splitting feedstock CO2 and H2O into synthesis gas, a mixture of CO and H2. Syngas plays a central role in the synthesis of a range of hydrocarbon products, including methane, diesel and dimethyl ether. The splitting is accomplished by innovative means; plasmolysis and high-temperature solid oxygen electrolysis. A CO2-neutral fuel cycle is

  19. Facts about Type 2

    Medline Plus

    Full Text Available ... of Diabetes Diabetes Myths A Day in the Life of Diabetes Famous People Working to Stop Diabetes ... CHIP For Parents & Kids Safe at School Everyday Life Children and Type 2 Diabetes Know Your Rights ...

  20. Facts about Type 2

    Medline Plus

    Full Text Available ... En Español Type 1 Type 2 About Us Online Community Meal Planning Sign In Search: Search More ... Researchers Our Research Foundation Diabetes Pro: Professional Resources Online We Support Your Doctor Clinical Practice Guidelines Patient ...

  1. Main: ACGTSEED2 [PLACE

    Lifescience Database Archive (English)

    Full Text Available ACGTSEED2 S000018 17-May-1998 (last modified) kehi ACGT motif related to seed expression; Gene: French... bean phaseolin; transacting factor: 02; phaseolin; seed; ACGT; French bean; bean (Phaseolus vulgaris) ACACACGTCAA ...

  2. Facts about Type 2

    Medline Plus

    Full Text Available ... and Learning About Prediabetes Type 2 Diabetes Risk Test Lower Your Risk Healthy Eating Overweight Smoking High ... You at Risk? Diagnosis Lower Your Risk Risk Test Alert Day Prediabetes My Health Advisor Tools to ...

  3. Facts about Type 2

    Medline Plus

    Full Text Available ... Diets Meal Planning for Vegetarian Diets Cook with Heart-Healthy Foods Holiday Meal Planning What Can I ... levels may hurt your eyes, kidneys, nerves or heart. Some people with type 2 can control their ...

  4. Facts about Type 2

    Medline Plus

    Full Text Available ... Type 2 Diabetes Know Your Rights Employment Discrimination Health Care Professionals Law Enforcement Driver's License For Lawyers Food & ... Terms Genetics Living With Diabetes Recently Diagnosed Treatment & Care Complications Health Insurance For Parents & Kids Know Your Rights We ...

  5. X-2 in flight

    Science.gov (United States)

    1956-01-01

    This inflight photograph of the X-2 (46-674) shows the twin set of shock-diamonds, characteristic of supersonic conditions in the exhaust plume from the two-chamber rocket engine. The Curtiss-Wright XLR-25 rocket engine caused one of several problems that delayed flight of the X-2. At one point, people in the project suggested its replacement. It was the first 'man-rated' (in the terminology of the day) rocket engine that was throttleable, and the technology was not yet mature. Other problems included the X-2's landing gear and the replacement of the planned electronic flight controls with a conventional hydromechanical system like that used in the F-86. The X-2 was a swept-wing, rocket-powered aircraft designed to fly faster than Mach 3 (three times the speed of sound). It was built for the U.S. Air Force by the Bell Aircraft Company, Buffalo, New York. The X-2 was flown to investigate the problems of aerodynamic heating as well as stability and control effectiveness at high altitudes and high speeds (in excess of Mach 3). Bell aircraft built two X-2 aircraft. These were constructed of K-monel (a copper and nickel alloy) for the fuselage and stainless steel for the swept wings and control surfaces. The aircraft had ejectable nose capsules instead of ejection seats because the development of ejection seats had not reached maturity at the time the X-2 was conceived. The X-2 ejection canopy was successfully tested using a German V-2 rocket. The X-2 used a skid-type landing gear to make room for more fuel. The airplane was air launched from a modified Boeing B-50 Superfortress Bomber. X-2 Number 1 made its first unpowered glide flight on Aug. 5, 1954, and made a total of 17 (4 glide and 13 powered) flights before it was lost Sept. 27, 1956. The pilot on Flight 17, Capt. Milburn Apt, had flown the aircraft to a record speed of Mach 3.2 (2,094 mph), thus becoming the first person to exceed Mach 3. During that last flight, inertial coupling occurred and the pilot was

  6. Diagnosis of NF2

    Science.gov (United States)

    ... protect nerve cells and provide nerves with the insulation they need to conduct information. The symptoms of ... click here . Genetic Testing for NF2 Massachusetts General Hospital, Boston, MA DNA diagnostics lab at MGH, phone ( ...

  7. Facts about Type 2

    Medline Plus

    Full Text Available ... Children and Type 2 Diabetes Know Your Rights Employment Discrimination Health Care Professionals Law Enforcement Driver's License ... Find Your Local Office Find your local diabetes education program Calendar of Events Wellness Lives Here Drive ...

  8. Facts about Type 2

    Medline Plus

    Full Text Available ... Fit Types of Activity Weight Loss Assess Your Lifestyle Getting Started Food Choices In My Community Home ... glucose levels normal. Type 2 is treated with lifestyle changes, oral medications (pills), and insulin. When glucose ...

  9. Figure_2_data

    Data.gov (United States)

    U.S. Environmental Protection Agency — Data for Figure 2 This dataset is associated with the following publication: Sarwar, G., D. Kang, K. Foley, D. Schwede, B. Gantt, and R. Mathur. Technical note:...

  10. Facts about Type 2

    Medline Plus

    Full Text Available ... Doctors, Nurses & More Oral Health & Hygiene Women A1C Insulin Pregnancy 8 Tips for Caregivers Health Insurance Health ... type 2 diabetes, your body does not use insulin properly. This is called insulin resistance. At first, ...

  11. Facts about Type 2

    Medline Plus

    Full Text Available ... Life Children and Type 2 Diabetes Know Your Rights Employment Discrimination Health Care Professionals Law Enforcement Driver's ... going into cells, it can cause two problems: Right away, your cells may be starved for energy. ...

  12. Facts about Type 2

    Medline Plus

    Full Text Available ... You at Risk? Home Prevention Diagnosing Diabetes and Learning About Prediabetes Type 2 Diabetes Risk Test Lower ... Volunteer Opportunities Sponsorship and Exhibit Opportunities Diabetes Camp Learning at Camp Find a Camp Apply for Camp ...

  13. Main: GARE2 [PLACE

    Lifescience Database Archive (English)

    Full Text Available GARE2 S000165 17-May-1998 (last modified) kehi Putative gibberellin responsive elem...ent; Consensus sequence of GA inducible alpha-amylase genes from rice, barley and wheat; gibberellin; GARE;

  14. Facts about Type 2

    Medline Plus

    Full Text Available ... to Stop Diabetes Awareness Programs Hispanic Heritage Month African American Programs Latino Programs Asian Americans, Native Hawaiians ... others. Type 2 diabetes is more common in African Americans, Latinos, Native Americans, and Asian Americans/Pacific ...

  15. 2,5-Dimethoxybenzonitrile

    Directory of Open Access Journals (Sweden)

    Thies Thiemann

    2013-12-01

    Full Text Available In the title molecule, C9H9NO2, the non-H atoms are essentially coplanar with a maximum deviation of 0.027 (2 Å for the C atom of one of the methyl groups. In the crystal, the molecules are arranged into centrosymmetric pairs via pairs of C—H...O and C—H...N interactions whereas π–π stacking interactions between the benzene rings [centroid–centroid distance 3.91001 (15 Å] organize them into polymeric strands propagating along the a-axis direction. There is a step of 0.644 (2 Å between the two planar parts of the centrosymmetric pair. In neighboring strands related by the n-glide operation, the aromatic rings are tilted by 29.08 (2°.

  16. Facts about Type 2

    Medline Plus

    Full Text Available ... Nephropathy) Gastroparesis Mental Health Step On Up Treatment & Care Blood Glucose Testing Medication Doctors, Nurses & More Oral ... 2 Diabetes Know Your Rights Employment Discrimination Health Care Professionals Law Enforcement Driver's License For Lawyers Food & ...

  17. Facts about Type 2

    Medline Plus

    Full Text Available ... Find your leading role for type 2 diabetes management. » « Connect With Us Register for diabetes news, research ... Blog Online Community Site Menu Are You at Risk? Diagnosis Lower Your Risk Risk Test Alert Day ...

  18. Facts about Type 2

    Medline Plus

    Full Text Available ... Student Resources History of Diabetes Resources for School Projects How to Reference Our Site Diabetes Basics Myths ... Type 2 Diabetes Program Food & Fitness Food Recipes Planning Meals What Can I Eat Weight Loss Fitness ...

  19. Facts about Type 2

    Medline Plus

    Full Text Available ... Risk Alert Day Diabetes Basics Home Symptoms Diagnosis America's Diabetes Challenge Type 1 Type 2 Facts About ... more deaths a year than breast cancer and AIDS combined. Your gift today will help us get ...

  20. Main: TATABOX2 [PLACE

    Lifescience Database Archive (English)

    Full Text Available TATABOX2 S000109 12-April-2004 (last modified) kehi TATA box; TATA box found in the...; TATA; legA; phaseolin; pea (Pisum sativum); tobacco (Nicotiana tabacum); bean (Phaseolus vulgaris); TATAAAT ...

  1. Proto-2 seduces America

    CERN Multimedia

    2002-01-01

    Proto-2, an ALICE detector prototype, overcame its prototype status to become a real part of the STAR experiment at the US Brookhaven National Laboratory. After more than two years across the ocean, it has just arrived back at CERN.

  2. Facts about Type 2

    Medline Plus

    Full Text Available ... Children and Type 2 Diabetes Know Your Rights Employment Discrimination Health Care Professionals Law Enforcement Driver's License ... Link Diabetes EXPO Upcoming Diabetes EXPOs EXPO Volunteer Opportunities Sponsorship and Exhibit Opportunities Diabetes Camp Learning at ...

  3. Main: ABAREG2 [PLACE

    Lifescience Database Archive (English)

    Full Text Available ABAREG2 S000009 29-Sep-1999 (last modified) kehi Motif related to ABA regulation; G...ene: sunflower helianthinin; transacting factor: bZIP ? ABA; bZIP; seed; sunflower (Helianthus annuus) ATGTACGAAGC ...

  4. H2 in Galaxies

    CERN Document Server

    Combes, F

    1999-01-01

    The bulk of the molecular gas in spiral galaxies is under the form of cold H2, that does not radiate and is only suspected through tracer molecules, such as CO. All tracers are biased, and in particular H2 could be highly underestimated in low metallicity regions. Our knowledge is reviewed of the H2 content of galaxies, according to their types, environment, or star-forming activities. The HI and CO components are generally well-mixed (spiral arms, vertical distribution), although their radial distributions are radically different, certainly due to radial abundance gradients. The hypothesis of H2 as dark matter is discussed, as well as the implications on galaxy dynamics, or the best perspectives for observational tests.

  5. Facts about Type 2

    Medline Plus

    Full Text Available ... Living with Diabetes Home Recently Diagnosed Where Do I Begin With Type2? Living With Type 1 Diabetes ... Heart-Healthy Foods Holiday Meal Planning What Can I Eat? Making Healthy Food Choices Diabetes Superfoods Non- ...

  6. Facts about Type 2

    Medline Plus

    Full Text Available ... For Parents & Kids Safe at School Everyday Life Children and Type 2 Diabetes Know Your Rights Employment ... seconds someone new is diagnosed. Diabetes causes more deaths a year than breast cancer and AIDS combined. ...

  7. Facts about Type 2

    Medline Plus

    Full Text Available ... in the Living WIth Type 2 Diabetes Program We Can Help Center for Information Legal Assistance Success ... Congress The Cost of Diabetes Research & Practice Home We Are Research Leaders World's Largest Diabetes Meeting Recent ...

  8. Facts about Type 2

    Medline Plus

    Full Text Available ... Student Resources History of Diabetes Resources for School Projects How to Reference Our Site Diabetes Basics Myths ... Find your leading role for type 2 diabetes management. » « Connect With Us Register for diabetes news, research ...

  9. Main: AGMOTIFNTMYB2 [PLACE

    Lifescience Database Archive (English)

    Full Text Available AGMOTIFNTMYB2 S000444 28-Jan-2004 (last modified) kehi AG-motif found at -114 of th... gene phenylalanine ammonia lyase (PAL), which are induced by various stress such as wounding or elicitor treatm

  10. Facts about Type 2

    Medline Plus

    Full Text Available ... and Learning About Prediabetes Type 2 Diabetes Risk Test Lower Your Risk Healthy Eating Overweight Smoking High ... prediabetes, and no one is excused. Take the test. Know where you stand. More from diabetes.org ...

  11. Facts about Type 2

    Science.gov (United States)

    ... out to patients. You can also download the Spanish version. Last Reviewed: August 1, 2013 Last Edited: October 27, 2015 Articles from Diabetes Forecast® magazine: lp-type-2, In this section Diabetes Basics ...

  12. Facts about Type 2

    Medline Plus

    Full Text Available ... is Gestational Diabetes? How to Treat Gestational Diabetes Genetics of Diabetes Diabetes Myths A Day in the ... 1 Type 2 Gestational Myths Statistics Common Terms Genetics Living With Diabetes Recently Diagnosed Treatment & Care Complications ...

  13. ARLearn 2.0

    NARCIS (Netherlands)

    Ternier, Stefaan; Tabuenca, Bernardo; Klemke, Roland; Specht, Marcus

    2013-01-01

    Ternier, S., Tabuenca, B., Klemke, R., & Specht, M. (2012). ARLearn (version 2.0) [Software]. Heerlen, The Netherlands: Open Universiteit. Available under the GNU Lesser General Public License (LGPL3)

  14. New ALPHA-2 magnet

    CERN Multimedia

    Anaïs Schaeffer

    2012-01-01

    On 21 June, members of the ALPHA collaboration celebrated the handover of the first solenoid designed for the ALPHA-2 experiment. The magnet has since been successfully installed and is working well.   Khalid Mansoor, Sumera Yamin and Jeffrey Hangst in front of the new ALPHA-2 solenoid. “This was the first of three identical solenoids that will be installed between now and September, as the rest of the ALPHA-2 device is installed and commissioned,” explains ALPHA spokesperson Jeffrey Hangst. “These magnets are designed to allow us to transfer particles - antiprotons, electrons and positrons - between various parts of the new ALPHA-2 device by controlling the transverse size of the particle bunch that is being transferred.” Sumera Yamin and Khalid Mansoor, two Pakistani scientists from the National Centre for Physics in Islamabad, came to CERN in February specifically to design and manufacture these magnets. “We had the chance to work on act...

  15. Facts about Type 2

    Medline Plus

    Full Text Available ... Your Plate Gluten Free Diets Meal Planning for Vegetarian Diets Cook with Heart-Healthy Foods Holiday Meal ... to later on. Some groups have a higher risk for developing type 2 diabetes than others. Type ...

  16. Main: ABADESI2 [PLACE

    Lifescience Database Archive (English)

    Full Text Available ABADESI2 S000008 29-Sep-1999 (last modified) kehi Synthetic element (hex-3) related... to response to ABA and to desiccation; seed expression; Gene: synthetic; hex-3, mutant of hex-1 sequence fr

  17. Facts about Type 2

    Medline Plus

    Full Text Available ... make enough insulin to keep your blood glucose levels normal. Type 2 is treated with lifestyle changes, ... starved for energy. Over time, high blood glucose levels may hurt your eyes, kidneys, nerves or heart. ...

  18. Facts about Type 2

    Medline Plus

    Full Text Available ... to Stop Diabetes Awareness Programs Hispanic Heritage Month African American Programs Latino Programs Asian Americans, Native Hawaiians and ... others. Type 2 diabetes is more common in African Americans, Latinos, Native Americans, and Asian Americans/Pacific Islanders, ...

  19. Facts about Type 2

    Medline Plus

    Full Text Available ... People Working to Stop Diabetes Common Terms Diabetes Statistics Infographics Living with Diabetes Home Recently Diagnosed Where ... Basics Symptoms Type 1 Type 2 Gestational Myths Statistics Common Terms Genetics Living With Diabetes Recently Diagnosed ...

  20. Facts about Type 2

    Medline Plus

    Full Text Available ... Health Step On Up Treatment & Care Blood Glucose Testing Medication Doctors, Nurses & More Oral Health & Hygiene Women ... 1 Type 2 Gestational Myths Statistics Common Terms Genetics Living With Diabetes Recently Diagnosed Treatment & Care Complications ...

  1. Facts about Type 2

    Medline Plus

    Full Text Available ... Generation of Brilliant Researchers Our Research Foundation Diabetes Pro: Professional Resources Online We Support Your Doctor Clinical ... Type 2 Diabetes Recipes for Healthy Living Diabetes Pro: Professional Resources Shop Diabetes » Close nonprofit software

  2. NSP2 Target Areas

    Data.gov (United States)

    Department of Housing and Urban Development — The American Recovery and Reinvestment Act (ARRA) provided a second round of funds in 2009. NSP2 provides grants to states, local governments, nonprofits and a...

  3. The g-2 ring

    CERN Multimedia

    1974-01-01

    The precise measurement of "g-2", the anomalous magnetic moment of the muon, required a special muon storage ring with electrostatic focussing and very accurate knowledge of the magnetic bending field. For more details see under photo 7405430.

  4. Contaminant Candidate List 2

    Data.gov (United States)

    U.S. Environmental Protection Agency — CCL 2 is a list of contaminants that are currently not subject to any proposed or promulgated national primary drinking water regulations, that are known or...

  5. Facts about Type 2

    Medline Plus

    Full Text Available ... 2 Diabetes Risk Test Lower Your Risk Healthy Eating Overweight Smoking High Blood Pressure Physical Activity High ... What Can I Drink? Fruit Dairy Food Tips Eating Out Quick Meal Ideas Snacks Nutrient Content Claims ...

  6. COMBINE 2 seminar

    DEFF Research Database (Denmark)

    Sørensen, Lars Schiøtt; Jacobsen, Kim

    1995-01-01

    A seminar about the COMBINE project was described. Further, the project was described in generel, i.e. the COMBINE´s data model (IDM), the data exchange system (DES) and the different I/O-systems included in COMBINE 2......A seminar about the COMBINE project was described. Further, the project was described in generel, i.e. the COMBINE´s data model (IDM), the data exchange system (DES) and the different I/O-systems included in COMBINE 2...

  7. 2-Methylbenzimidazolium thiocyanate

    OpenAIRE

    Shayma A. Shaker; Hamid Khaledi; Hapipah Mohd Ali

    2010-01-01

    In the crystal structure of the title compound, C8H9N2+·SCN−, the nearly planar 2-methylbenzimidazolium cation [r.m.s. deviation = 0.0123 (4) Å] is perpendicular to a mirror plane and the methyl H atoms are disordered about the mirror plane with equal occupancies. The thiocyanate anion also lies on a mirror plane. N—H...N hydrogen bonds link the components into an infinite chain along the b axis.

  8. At NA2

    CERN Multimedia

    1977-01-01

    One of the NA2 calorimeter sections is moved in. The NA2 calorimeter was divided in two halves, to the left and the right of the beam, each half consisting of sheets of passive high Z material interleaved with blades of plastic scintillators. The photo shows on the right, the upstream 'electron' module with eleven lead plates for a total radiation length of 20.

  9. Bioinspired Poly(2-oxazolines

    Directory of Open Access Journals (Sweden)

    Helmut Schlaad

    2011-02-01

    Full Text Available Poly(2-oxazolines are regarded as pseudopeptides, thus bioinspired polymers, due to their structural relationship to polypeptides. Materials and solution properties can be tuned by varying the side-chain (hydrophilic-hydrophobic, chiral, bioorganic, etc., opening the way to advanced stimulus-responsive materials and complex colloidal structures. The bioinspired “smart” solution and aggregation behavior of poly(2-oxazolines in aqueous environments are discussed in this review.

  10. Medizinbibliotheken: Information2

    OpenAIRE

    Bauer, B.

    2014-01-01

    The focus of the current issue 3/2014 of GMS Medizin - Bibliothek - Information is the annual conference 2014 of the German Medical Libraries Association in Mannheim. The motto of the conference was "Medical libraries: Information2". The authors in this issue are Michaele Adam (Bibliometrics 2.0 - Altmetrics in Medicine), Bruno Bauer (Open access cooperation in Austria: Open Access Network Austria and E-Infrastructures Austria - recent developments since 2012), Fabian Gail & Ulrich Korwitz (M...

  11. Spiral 2 Week

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2007-07-01

    The main goal of this meeting is to present and discuss the current status of the Spiral-2 project at GANIL in front of a large community of scientists and engineers. Different issues have been tackled particularly the equipment around Spiral-2 like injectors, cryo-modules or beam diagnostics, a workshop was devoted to other facilities dedicated to radioactive ion beam production. This document gathers only the slides of the presentations.

  12. 2PM Beautiful Man

    Institute of Scientific and Technical Information of China (English)

    盖盖锅锅

    2012-01-01

    6月6日发行第四张日文单曲《Beautiful》的2PM,一向都是凸显男性魅力的6个人,这次还挑战了高难度椅子舞。究竟2PM他们还有多少美丽点,那就等你来探索略!

  13. Persistent luminescence in MSi2O2N2:Eu phosphors

    NARCIS (Netherlands)

    Botterman, J.; Van den Eeckhout, K.; Bos, A.J.J.; Dorenbos, P.; Smet, P.F.

    2012-01-01

    In this work we study the persistent luminescence properties of europium-doped alkaline earth silicon oxynitrides (CaSi2O2N2, SrSi2O2N2 and BaSi2O2N2). All compounds show afterglow emission, with an emission spectrum which is similar to the steady state photoluminescence. The afterglow decay time fo

  14. Frustrated pyrochlore oxides, Y2Mn2O7, Ho2Mn2O7, and Yb2Mn2O7: Bulk magnetism and magnetic microstructure

    DEFF Research Database (Denmark)

    Greedan, J.E.; Raju, N.P.; Maignan, A.;

    1996-01-01

    The bulk magnetic properties, including de and ac susceptibilities and heat capacity, of the pyrochlore oxides Ho2Mn2O7 and Yb2Mn2O7 are reported and compared with those of the previously studied Y2Mn2O7. In the latter case the magnetic Mn4+ ions occupy the 16c sites in Fd3m which define...... a potentially frustrated three-dimensional array of corner sharing tetrahedra. For Ho2Mn2O7 and Yb2Mn2O7 magnetic rare earth ions occupy the 16d sites, as shown by powder neutron diffraction, which are topologically equivalent to the 16c sites but displaced by a vector (1/2 1/2 1/2). Ho2Mn2O7 and Yb2Mn2O7....... Surprisingly, neutron diffraction data for both Ho2Mn2O7 and Yb2Mn2O7 show resolution limited reflections of magnetic origin in contrast to the heat capacity results. The resolution of the neutron diffraction data places a minimum on the correlation length of 100 Angstrom. Small angle neutron scattering data...

  15. (2E-1-Phenyl-2-[1-(2-phenylprop-2-en-1-ylpyrrolidin-2-ylidene]ethanone

    Directory of Open Access Journals (Sweden)

    Lee G. Madeley

    2012-12-01

    Full Text Available The title compound, C21H21NO, is a vinylogous amide (enaminone produced by reaction of 1-(2-phenylprop-2-en-1-ylpyrrolidine-2-thione with phenacyl bromide. In the molecule, the phenyl rings are twisted from the mean plane of the pyrrolidine ring by 11.2 (1 and 67.3 (1°. In the crystal, weak C—H...O hydrogen bonds link the molecules related by translation along the b axis into chains.

  16. Synthesis, structure and magnetic properties of the polyoxovanadate cluster [Zn2(NH2(CH2)2NH2)5][{Zn(NH2(CH2)2NH2)2}2{V18O42(H2O)}]$\\cdot x$H2O ( ∼ 12), possessing a layered structure

    Indian Academy of Sciences (India)

    Srinivasan Natarajan; K S Narayan; Swapan K Pati

    2006-01-01

    A hydrothermal reaction of a mixture of ZnCl2, V2O5, ethylenediamine and water gave rise to a layered poly oxovanadate material [Zn2(NH2(CH2)2NH2)5][{Zn(NH2(CH2)2NH2)2}2{V18O42(H2O)}]$\\cdot x$H2O ( = 12) (I) consisting of [V18O42]12- clusters. These clusters, with all the vanadium ions in the +4 state, are connected together through Zn(NH2(CH2)2NH2)2 linkers forming a two-dimensional structure. The layers are also separated by distorted trigonal bipyramidal [Zn2(NH2(CH2)2NH2)5] complexes. The structure, thus, presents a dual role for the Zn-ethylenediamine complex. The magnetic susceptibility studies indicate that the interactions between the V centres in I are predominantly antiferromagnetic in nature and the compound shows highly frustrated behaviour. The magnetic properties are compared to the theoretical calculations based on the Heisenberg model, in addition to correlating to the structure. Crystal data for the complexes are presented.

  17. Penurunan Kandungan Zat Kapur dalam Air Tanah dengan Menggunakan Media Zeolit Alam dan Karbon Aktif Menjadi Air Bersih

    Directory of Open Access Journals (Sweden)

    Gianina Qurrata Dinora

    2013-09-01

    Full Text Available Salah satu syarat kimia yang harus dipenuhi dalam air bersih adalah kesadahan. Salah satu penyebab utama terjadinya kesadahan adalah kandungan Ca2+ (kesadahan kalsium atau biasanya disebut air kapur. Selain kandungan air kapur yang tinggi, penyebab air tanah tidak dapat langsung digunakan adalah kadungan besi dan mangan yang tinggi pula. Untuk itu, dibutuhkan unit filter skala rumah tangga yang dapat menjadi pengolahan alternatif untuk memenuhi kebutuhan air bersih. Penelitian ini  bertujuan untuk mendapatkan komposisi media filter yang efektif dan effisien untuk penyisihan kesadahan kalsium, Fe, dan Mn dalam air tanah dan mendapatkan waktu breakthrough. Media filter yang digunakan pada penelitian ini adalah media zeolit alam dan karbon aktif disusun secara stratifikasi dengan perbandingan ketinggian pada masing-masing reaktor filter. Media filter tersebut akan dialiri dengan tiga variasi konsentrasi kesdahan kalsium. Hasil dari penelitian ini, didapatkan komposisi media yang paling efektif dalam menurunkan kandungan kesadahan kalsium adalah komposisi III dengan perbandingan ketinggian media zeolit alam dan karbon aktif sebesar 30 cm : 60 cm. Pada variasi konsentrasi 1 mampu melakukan penyisihan sebesar 96,52%, konsentrasi 2 mampu melakukan penyisihan sampai 94,67%, dan konsentrasi 3 mampu melakukan penyisihan sebesar 90,22%

  18. PEMBUATAN KALSIUM KARBONAT DARI BITTERN DAN GAS KARBON DIOKSIDA SECARA KONTINYU

    Directory of Open Access Journals (Sweden)

    Soemargono Soemargono

    2012-01-01

    Full Text Available Kalsium karbonat  yang  digunakan  dalam  industri- industri cat, karet, dan  kertas  harus  mempunyai  mutu yang  tinggi, terutama  kemurnian  dan kehalusannya.Untuk itu, Indonesia masih  mendatangkan  kalsium  karbonat murni dari luar negeri dalam jumlah yang cukup besar. Bittern merupakan bahan buangan industri garam yang disebut juga air tua, mengandung senyawa kalsium. Karbon dioksida biasanya berasal dari hasil pembakaran yang masuk ke udara. Kandungannya di udara kecil, tetapi berpotensi sebagai pencemar. Dengan mereaksikan kalsium yang terkandung dalam bittern dengan gas CO2 akan terbentuk CaCO3 dalam suasana basa. Pembentukan kalsium karbonat dilakukan dengan proses kontinyu dalam reaktor kolom bersekat miring. Dari hasil penelitian diperoleh bahwa pengendapan magnesium dengan larutan ammonia menyebabkan kandungan kalsium ikut terdegradasi. Hasil terbaik yang diperoleh dicapai pada kondisi pH awal, kecepatan alir gas CO2, kecepatan alir cairan, dan suhu masing-masing pada 8,7; 2265 mL/menit; 10 mL/menit; dan 303 K, dengan konversi sebesar 38,40%. Produk berupa CaCO3, yang diperoleh mempunyai kemurnian sebesar 21,34%.

  19. Bio-Oil dari Limbah Padat Sawit

    Directory of Open Access Journals (Sweden)

    Edy Saputra

    2007-12-01

    Full Text Available Bahan bakar minyak merupakan sumber energi terpenting untuk kehidupan manusia. Produksi bahan bakar minyak yang berasal dari bahan bakar fosil semakin hari semakin menurun. Untuk itu diperlukan suatu alternatif sumber energi yang dapat diperbaharui dalam menggantikan bahan bakar fosil, salah satunya adalah mengkonversikan biomas menjadi biooil. Dalam penelitian ini digunakan limbah padat sawit, yaitu batang dan tandan kosong sawit dengan ukuran partikel 2-6 dan 6-10 mesh. Proses yang digunakan untuk mengkonversikan limbah padat sawit pada penelitian ini yaitu slow pyrolysis. Proses ini dilakukan pada reaktor pipa stainless steel dengan diameter 3,81 cm dan panjang 60 cm, pada kisaran temperatur 450-600oC yang dialiri gas nitrogen. Hasil yield tertinggi dicapai pada suhu 500oC dengan diameter partikel 2-6 mesh. Produk bio-oil dilakukan analisa dengan menggunakan GC HP 5890 II. Pada produk bio-oil juga teridentifikasi adanya etanol, benzena, toluena dan xylen. Kata kunci: bio-oil, limbah padat sawit, pyrolysis

  20. Oxygen labelled CO2

    International Nuclear Information System (INIS)

    Tests were carried out as to whether additional information concerning pulmonary gas exchange could be obtained from the application of oxygen labelled carbon dioxide. Single breath experiments were performed on two healthy subjects with 0.1 percent C16O18O and 2.8 percent C18O2 in the inspiratory gas. Breath-hold time was varied between 0.5-20s in different experiments. The 18O-concentration of the end-expired gas bi-exponentially decreased with increasing breath-hold time. The high and low rate constants 4s-1 and 0.12s-1 for C18O2 and 2.5s-1 and 0.87s-1 for C16O18O were derived, respectively. These results, together with model calculations, suggest: 1) the rapid disappearance of C18O2 from the alveolar space is primarily limited by diffusion, so that this isotopic species can be applied to quantify pulmonary diffusing conditions; 2) the lower disappearance rate of C16O18O is caused by a lower equilibration kinetics in blood, so that this isotopic species offers a possibility to study carbonic anhydrase activity of the red cells in vivo; 3) the slow phase of label decay is influenced by both alveolar dead space and carbonic anhydrase activity of the pulmonary tissues. Pathological dead spaces are expected to be sensitively detectable by C16O18O as well as by C18O2. (author). 4 refs.; 4 figs

  1. 75 FR 4292 - 2-Propenoic acid, 2-ethylhexyl ester, polymer with ethenylbenzene and 2-methylpropyl 2-methyl-2...

    Science.gov (United States)

    2010-01-27

    ...-propenoate; when used as an inert ingredient in a pesticide chemical formulation. BASF Corporation submitted...-methylpropyl 2- methyl-2-propenoate on food or feed commodities. DATES: This regulation is effective January 27...: Crop production (NAICS code 111). Animal production (NAICS code 112). Food manufacturing (NAICS...

  2. CO2 chemical valorization

    International Nuclear Information System (INIS)

    Facing global warming, different technological solutions exist to tackle carbon dioxide (CO2) emissions. Some inevitable short term emissions can be captured so as to avoid direct emissions into the atmosphere. This CO2 must then be managed and geological storage seems to currently be the only way of dealing with the large volumes involved. However, this solution faces major economic profitability and societal acceptance challenges. In this context, alternative pathways consisting in using CO2 instead of storing it do exist and are generating growing interest. This study ordered by the French Environment and Energy Management Agency (ADEME), aims at taking stock of the different technologies used for the chemical conversion of CO2 in order to have a better understanding of their development potential by 2030, of the conditions in which they could be competitive and of the main actions to be implemented in France to foster their emergence. To do this, the study was broken down into two main areas of focus: The review and characterization of the main CO2 chemical conversion routes for the synthesis of basic chemical products, energy products and inert materials. This review includes a presentation of the main principles underpinning the studied routes, a preliminary assessment of their performances, advantages and drawbacks, a list of the main R and D projects underway, a focus on emblematic projects as well as a brief analysis of the markets for the main products produced. Based on these elements, 3 routes were selected from among the most promising by 2030 for an in-depth modelling and assessment of their energy, environmental and economic performances. The study shows that the processes modelled do have favorable CO2 balances (from 1 to 4 t-CO2/t-product) and effectively constitute solutions to reduce CO2 emissions, despite limited volumes of CO2 in question. Moreover, the profitability of certain solutions will remain difficult to reach, even with an energy mix

  3. Kemi 2.0

    DEFF Research Database (Denmark)

    Johannesson, Anne Boie

    2014-01-01

    temaer, hvor eleverne laver deres eget didaktiske design indenfor rammerne af lærerens didaktiske design. Fokus i gruppearbejdet er udarbejdelse af web 2.0-produkter og meningsforhandling. Lærerens rolle er at hjælpe når der er behov for det, fremfor at lave almindelig tavleundervisning. Kemi 2.0 ligger......I dette projekt undersøges det hvordan kemi C på stx kan gøres it-baseret og almendannende. Løsningen er elevaktiverende og temabaseret undervisning samt fokus på kompetencer, fremfor kun på kvalifikationer. Det didaktiske design af kemi 2.0 er baseret på socialkonstruktivismen og inspireret af...... Dewey, Kolb, Illeris, Wenger og Luhmann. De unge karakteriseres med udgangspunkt i forskellige generationsbeskrivelser, og principper for didaktik 2.0, der imødekommer de unges forventninger og måder at lære på, skitseres. Principperne i kemi 2.0 er længerevarende gruppearbejde indenfor vedkommende...

  4. CO{sub 2} geothermal heat probe - Phase 2; CO{sub 2}-Erdwaermesonde - Phase 2

    Energy Technology Data Exchange (ETDEWEB)

    Grueniger, A.; Wellig, B.

    2009-12-15

    In this project the fluid dynamics and thermodynamics inside a CO{sub 2} geothermal heat probe have been investigated. The functionality of such a probe, which works like a thermosyphon, was analyzed by means of a simulation model in MATLAB. The model couples the behaviour inside the heat probe with the heat conduction in the earth. A parameter study revealed that the self-circulation character of such a probe leads to flattening of the vertical earth temperature profile near the probe and, hence, leads to more uniform heat removal along the probe. The circulation of CO{sub 2} even goes on when the heat pump is off. This might be advantageous for the regeneration phase. The heat transfer resistance of the evaporating CO{sub 2} film flowing down the probe wall is very small compared to the conduction resistance of the earth. Therefore, no difference has been found between the performances of a conventional heat pipe and a configuration where the liquid phase injection is distributed on different height stages along the probe. It is estimated that the seasonal performance factor of heat pumps can be improved by 15-25% with a CO{sub 2} geothermal heat probe. The main advantage is that the heat transfer to the evaporator of the heat pump (condensation of CO{sub 2} / evaporation of refrigerant) is much more efficient than in a conventional brine probe without phase change. Furthermore, no circulation pump is needed. (authors)

  5. Interaction of [Rh2(O2CCH3)4(H2O)2] and [Rh2(O2CCH(OH)Ph)2(phen)2(H2O)2](O2C-CH(OH)Ph)2 With Sulfhydryl Compounds and Ceruloplasmin

    OpenAIRE

    Jakimowicz, Piotr; Ostropolska, Lucja; Pruchnik, Florian P.

    2000-01-01

    The interaction of binuclear rhodium(II) complexes [Rh2(OOCCH3)4(H2O)2], [Rh2{OOCCH(OH)Ph}2(phen)2(H2O)2] {OOCCH(OH)Ph}2, [Rh2(OOCCH3)2(bpy)2(H2O)2](OOCCH3)2 and [Rh2Cl2(OOCMe)2(bpy)2](3H2O) with ceruloplasmin, cysteine, glutathione and coenzyme A have been investigated using. UV-Vis and CD spectroscopies. The complexes containing phen or bpy at pH = 7.4 and 4.0 are readily reduced with sulfhydryl compounds, while rhodium(II) acetate is relatively stable in these conditions. Complex [Rh2{OOCC...

  6. OQO Model 2

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    早在UMPC和MID的概念形成之前,OQO的迷你笔记本就已经在市场上销售了。不过OQO一直走的是高端产品路线,所以和现在的低价UMPC有些相悖。这次OQO为了迎接即将到来的CES展会,对Model2型进行了升级,名称暂定Model2+。因为OQO Model2+将采用从未曝光的Intel Atom 1.86GHz的处理器、并且是第一款采用OLED屏幕的UMPC,

  7. TOUGH2 software qualification

    International Nuclear Information System (INIS)

    TOUGH2 is a numerical simulation code for multi-dimensional coupled fluid and heat flow of multiphase, multicomponent fluid mixtures in porous and fractured media. It belongs to the MULKOM (open-quotes MULti-KOMponentclose quotes) family of codes and is a more general version of the TOUGH simulator. The MULKOM family of codes was originally developed with a focus on geothermal reservoir simulation. They are suited to modeling systems which contain different fluid mixtures, with applications to flow problems arising in the context of high-level nuclear waste isolation, oil and gas recovery and storage, and groundwater resource protection. TOUGH2 is essentially a subset of MULKOM, consisting of a selection of the better tested and documented MULKOM program modules. The purpose of this package of reports is to provide all software baseline documents necessary for the software qualification of TOUGH2

  8. Capnography: monitoring CO2.

    Science.gov (United States)

    Casey, Georgina

    2015-10-01

    MONITORING RESPIRATORY and metabolic function by using capnography to measure end tidal carbon dioxide is standard practice in anaesthesia. It is also becoming more common in intensive care units and during procedural sedation. End tidal carbon dioxide (EtCO2) monitoring may also be used to assess effectiveness of cardiopulmonary resuscitation. Capnography is now emerging in general medical and surgical wards to monitor respiratory depression in patients using opioid analgesics. Using EtCO2 to monitor respiratory function offers many benefits over pulse oximetry. It is important to understand the differences between these two monitoring methods, and why capnography is increasingly favoured in many situations. An understanding of the physiological processes involved in CO2 excretion allows nurses to use capnography in a safe and meaningful way, while monitoring at-risk patients in acute care. PMID:26638570

  9. TOUGH2 software qualification

    Energy Technology Data Exchange (ETDEWEB)

    Pruess, K.; Simmons, A.; Wu, Y.S.; Moridis, G.

    1996-02-01

    TOUGH2 is a numerical simulation code for multi-dimensional coupled fluid and heat flow of multiphase, multicomponent fluid mixtures in porous and fractured media. It belongs to the MULKOM ({open_quotes}MULti-KOMponent{close_quotes}) family of codes and is a more general version of the TOUGH simulator. The MULKOM family of codes was originally developed with a focus on geothermal reservoir simulation. They are suited to modeling systems which contain different fluid mixtures, with applications to flow problems arising in the context of high-level nuclear waste isolation, oil and gas recovery and storage, and groundwater resource protection. TOUGH2 is essentially a subset of MULKOM, consisting of a selection of the better tested and documented MULKOM program modules. The purpose of this package of reports is to provide all software baseline documents necessary for the software qualification of TOUGH2.

  10. CO2-strategier

    DEFF Research Database (Denmark)

    Jørgensen, Michael Søgaard

    2008-01-01

    I 2007 henvendte Lyngby-Taarbæk kommunens Agenda 21 koordinator sig til Videnskabsbutikken og spurgte om der var interesse for at samarbejde om CO2-strategier. Da Videnskabsbutikken DTU er en åben dør til DTU for borgerne og deres organisationer, foreslog Videnskabsbutikken DTU at Danmarks...... Naturfredningsforening’s lokalkomité for Lyngby blev en del af samarbejdet for at få borgerne i kommunen involveret i arbejdet med at udvikle strategier for reduktion af CO2. Siden sommeren 2007 har Videnskabsbutikken DTU, Lyngby-Taarbæk kommune og Danmarks Naturfredningsforening i Lyngby-Taarbæk samarbejdet om analyse...... og innovation i forhold til CO2-strategier....

  11. 2-Bromo-5-fluorobenzaldehyde

    Directory of Open Access Journals (Sweden)

    Joseph M. Tanski

    2013-08-01

    Full Text Available In the title compound, C7H4BrFO, the benzaldehyde O atom is found to be trans to the 2-bromo substituent. In the crystal, short Br...F interactions between the bromine and fluorine substituents are observed at distances of 3.1878 (14, 3.3641 (13 and 3.3675 (14 Å. Offset face-to-face π-stacking interactions are also observed for both of the independent molecules in the asymmetric unit running parallel to the crystallographic b axis, characterized by centroid–centroid distances of 3.8699 (2 and 3.8699 (2 Å.

  12. ATF2 Proposal

    Energy Technology Data Exchange (ETDEWEB)

    Grishanov, Boris Ivanovich; Logachev, Pavel; Podgorny, Fedor; Telnov, Valery; /Novosibirsk, IYF; Angal-Kalinin, Deepa; Appleby, Robert; Jones, James; Kalinin, Alexander; /Daresbury; Napoly, Olivier; Payet, Jacques; /DAPNIA, Saclay; Braun, Hans-Heinrich; Schulte, Daniel; Zimmermann, Frank; /CERN; Barlow, Roger; Bailey, Ian; Jenner, Leo; Jones, Roger; Kourevlev, German; /Daresbury; Walker, Nick; /DESY; Takahasi, Tohru; /Hiroshima U.; Gao, Jie; /Beijing, Inst. High Energy Phys. /Oxford U. /KEK, Tsukuba /Kyoto U., Inst. Chem. Res.

    2005-08-23

    This document is the first of two volumes describing the ATF2 project. The present volume discusses the technical justification for ATF2 and presents a design description. Since the International Committee for Future Accelerator (ICFA) decision on the choice of technology, a world-wide collaboration on the design of the International Linear Collider (ILC) has rapidly progressed [1]. The formation of the Global Design Effort (GDE) will accelerate the work towards a final design. An important technical challenge is obviously the high gradient acceleration but what is similarly challenging is the collision of extremely small beams of a few nanometer size. The latter challenge has three distinct issues: creating small emittance beams, preserving the emittance during acceleration and transport, and focusing the beams to nanometers. Most studies have been done using computer simulations but many issues still remain that require experimental verification. Accelerator Test Facility (ATF) at KEK was built to create small emittance beams, and succeeded in obtaining an emittance that almost satisfies the ILC requirements [2]. In this proposal we present a project, ATF2, which addresses the focusing of the beam into a nanometer spot. The ATF2 project will extend the extraction beamline of the ATF with an ILC-type final focus system to create a tightly focused, stable beam by making use of the small emittance of the ATF. The layout is shown in Figure 1.1. In the longer term, the ATF2 project would also provide invaluable input for the CLIC design of a future multi-TeV collider.

  13. 2.2.5.5-Tetraorganyl-1.4-dioxa-2.5-disilacyclohexane/2,2,5,5-Tetraorganyl-1,4-dioxa-2,5-disilacyclohexanes

    OpenAIRE

    Tacke, Reinhold; Lange, Hartwig; Bentlage, Anke; Sheldrick, William S.; Ernst, Ludger

    2016-01-01

    The 2,2,5,5-tetraorganyl-1,4-dioxa-2,5-disilacyclohexanes 2a-2c were prepared by condensation of the corresponding (hydroxymethyl)diorganylsilanes 1 a-1 c. The constitution of the heterocycles was confirmed by elemental analyses, cryoscopic measurements, mass spectrometry, and NMR-spectroscopic \\((^1H, ^{13}C)\\) investigations. The molecular structure of 2 b was determined by X-ray diffraction analysis.

  14. 2-Methylbenzimidazolium thiocyanate

    Directory of Open Access Journals (Sweden)

    Shayma A. Shaker

    2010-11-01

    Full Text Available In the crystal structure of the title compound, C8H9N2+·SCN−, the nearly planar 2-methylbenzimidazolium cation [r.m.s. deviation = 0.0123 (4 Å] is perpendicular to a mirror plane and the methyl H atoms are disordered about the mirror plane with equal occupancies. The thiocyanate anion also lies on a mirror plane. N—H...N hydrogen bonds link the components into an infinite chain along the b axis.

  15. 2-(Benzenesulfonamidopyridinium perchlorate

    Directory of Open Access Journals (Sweden)

    Xun Li

    2009-06-01

    Full Text Available In the title compound, C11H11N2O2S+·ClO4−, the dihedral angle between the benzene and pyridinium rings is 87.33 (10°. An intramolecular N—H...O interaction, with an S=O-bonded O atom as receptor, occurs in the cation. In the crystal structure, ion pairs occur, being linked by strong N—H...O hydrogen bonds. The perchlorate anion plays a further role in the molecular packing by accepting several weak C—H...O interactions.

  16. D2-tree

    DEFF Research Database (Denmark)

    Brodal, Gerth Stølting; Sioutas, Spyros; Pantazos, Kostas;

    2015-01-01

    We present a new overlay, called the Deterministic Decentralized tree (D2-tree). The D2-tree compares favorably to other overlays for the following reasons: (a) it provides matching and better complexities, which are deterministic for the supported operations; (b) the management of nodes (peers......-balancing scheme of elements into nodes is deterministic and general enough to be applied to other hierarchical tree-based overlays. This load-balancing mechanism is based on an innovative lazy weight-balancing mechanism, which is interesting in its own right....

  17. 2-Carboxyanilinium chloride monohydrate

    OpenAIRE

    Muhammad Ashraf Chaudhary; Javed Iqbal; M. Nawaz Tahir; Syed Azeem Rashid Ali Zaidi

    2008-01-01

    In the molecule of the title compound, C7H8NO2+·Cl−·H2O, an intramolecular N—H...O hydrogen bond results in the formation of a non-planar six-membered ring adopting a flattened boat conformation. In the crystal structure, intermolecular O—H...O and N—H...Cl hydrogen bonds link the molecules. There is a C=O...π contact between the carbonyl unit and the centroid of the benzene ring. There is a C=O...π contact [C...Cg = 3.5802 (18), C—O...C...

  18. 2,5-Dimethoxybenzonitrile

    OpenAIRE

    Thies Thiemann; Yosef Al Jasem; Bernhard Bugenhagen

    2013-01-01

    In the title molecule, C9H9NO2, the non-H atoms are essentially coplanar with a maximum deviation of 0.027 (2) Å for the C atom of one of the methyl groups. In the crystal, the molecules are arranged into centrosymmetric pairs via pairs of C—H...O and C—H...N interactions whereas π–π stacking interactions between the benzene rings [centroid–centroid distance 3.91001 (15) Å] organize them into polymeric strands propagating alo...

  19. Heterotic M2-branes

    Directory of Open Access Journals (Sweden)

    Neil Lambert

    2015-10-01

    Full Text Available We construct the action for N M2-branes on S1/Z2. The resulting theory has a gauge anomaly but this can be cancelled if the two fixed point planes each support 8 chiral Fermions in the fundamental of U(N. Taking the low energy limit leads to the worldsheet theory of N free heterotic strings whose quantization induces an E8 spacetime gauge symmetry on each fixed point plane. Thus this paper presents a non-abelian worldvolume analogue of the classic Hořava–Witten analysis.

  20. Medizinbibliotheken: Information2

    OpenAIRE

    Bauer, Bruno

    2014-01-01

    The focus of the current issue 3/2014 of GMS Medizin – Bibliothek – Information is the annual conference 2014 of the German Medical Libraries Association in Mannheim. The motto of the conference was “Medical libraries: Information2”. The authors in this issue are Michaele Adam (Bibliometrics 2.0 – Altmetrics in Medicine), Bruno Bauer (Open access cooperation in Austria: Open Access Network Austria and E-Infrastructures Austria – recent developments since 2012), Fabian Gail & Ulrich Korwitz (M...

  1. P2P financovanie

    OpenAIRE

    Dobiasová, Dana

    2015-01-01

    The aim of this bachelors thesis is to determine the effect of P2P lending on the economic indicators and the status of small and medium enterprises in the United States, specifically for the period form 2011 to 2015. To better understand the practical part, two first chapters will be focused on defining the concept of P2P lending and analysing the current situation in the United States. Besides that, it is also an emphasis on regulatory requirements which are newly starting to appear. This k...

  2. Programming Amazon EC2

    CERN Document Server

    Vliet, Jurg

    2011-01-01

    If you plan to use Amazon Web Services to run applications in the cloud, the end-to-end approach in this book will save you needless trial and error. You'll find practical guidelines for designing and building applications with Amazon Elastic Compute Cloud (EC2) and a host of supporting AWS tools, with a focus on critical issues such as load balancing, monitoring, and automation. How do you move an existing application to AWS, or design your application so that it scales effectively? How much storage will you require? Programming Amazon EC2 not only helps you get started, it will also keep y

  3. Nu2U

    DEFF Research Database (Denmark)

    Sørensen, Hans Eibe; Williamson, Trevor

    Abstract In September 2014, nine months after launching a major growth opportunity, Jenny Dunne, managing director of Nu2U, called for an extraordinary status meeting with her COO and CMO. A fast-growing online retailer of refurbished household appliances, Nu2U planned to acquire market share...... by improving internal logistics and delivery services, aided by a new, fully integrated software system. The company's gross profit had been increasing steadily, but recent accounts revealed a fall in net profit margins. It became apparent that implementation of the business plan for the project...

  4. 3-(Pyridin-2-ylcoumarin

    Directory of Open Access Journals (Sweden)

    Yu-Xia Da

    2010-11-01

    Full Text Available In the title compound, C14H9NO2, the dihedral angle between the pyridine ring and the lactone ring is 10.40 (3°. The coumarin ring system is nearly planar, with a dihedral angle of 1.40 (2° between the lactone and benzene rings. An intramolecular C—H...O hydrogen bond occurs. In the crystal, inversion dimers linked by pairs of C—H...O interactions occur, generating R22(14 loops.

  5. Synthesis and Transformations of di-endo-3-Aminobicyclo-[2.2.2]oct-5-ene-2-carboxylic Acid Derivatives

    Directory of Open Access Journals (Sweden)

    Márta Palkó

    2011-09-01

    Full Text Available all-endo-3-amino-5-hydroxybicyclo[2.2.2]octane-2-carboxylic acid (13 and all-endo-5-amino-6-(hydroxymethylbicyclo[2.2.2]octan-2-ol (10 were prepared via dihydro-1,3-oxazine or g-lactone intermediates by the stereoselective functionalization of an N-protected derivative of endo-3-aminobicyclo[2.2.2]oct-5-ene-2-carboxylic acid (2. Ring closure of b-amino ester 4 resulted in tricyclic pyrimidinones 15 and 16. The structures, stereochemistry and relative configurations of the synthesized compounds were determined by IR and NMR.

  6. Nd2[MoC2] and RE2[WC2], RE=Ce, Pr, Nd: New carbometalates with Pr2[MoC2] structure type

    OpenAIRE

    Enkhtsetseg Dashjav, Yurii Prots, Guido Kreiner, Walter Schnelle, Frank R. Wagner and Rüdiger Kniep

    2007-01-01

    Four new ternary rare-earth-metal carbometalates, Nd2[MoC2] and RE2[WC2] with RE=Ce, Pr, Nd, have been synthesized by argon arc melting and subsequent heat treatment at 1170 K for 30 days. They crystallize with the Pr2[MoC2] structure type with isolated C4− species and are typical carbometalates with (i) low metal-to-carbon ratio, (ii) tetrahedral coordination of the transition metals (T) by carbon, and (iii) a polyanionic network ∞2[(TC2)6-]. According to resistivity measurements the compoun...

  7. Two New Dicyanamide Coordination Polymers with Alternating Parallel Chains: {Mn(dmpz)[N(CN)2]2}2 and {Cu(dmpz)[N(CN)2]2}2

    Institute of Scientific and Technical Information of China (English)

    罗俊; 周锡庚; 侯秀峰; 吴惠霞; 翁林红; 李艳荣

    2005-01-01

    Two new dicyanamide coordination polymers, {Mn(dmpz)[N(CN)2]2}2 (1) and {Cu(dmpz)[N(CN)2]2}2 (2)(dmpz=3,5-dimethylpyrazole), were synthesized and characterized by single crystal X-ray diffraction analysis and IR spectroscopy. In 1 and 2 the metal ions have two different coordination modes, where one is coordinated to four dicyanamide anions and two monodentate dmpz molecules to form a slightly distorted octahedral geometry, while the other adopts octahedral geometry, surrounded by four nitrile N atoms and two amide N atoms of the dicyanamide anions. Both complexes contain two alternating chains that are parallel to each other.

  8. First outer-sphere 1,3-diethyl-2-thiobarbituric compounds [M(H2O)6](1,3-diethyl-2-thiobarbiturate)2·2H2O (M = Co2+, Ni2+): Crystal structure, spectroscopic and thermal properties

    Science.gov (United States)

    Golovnev, Nicolay N.; Molokeev, Maxim S.; Lesnikov, Maxim K.; Atuchin, Victor V.

    2016-06-01

    Two new d-element compounds, [Co(H2O)6](Detba)2·2H2O (1) and [Ni(H2O)6](Detba)2·2H2O (2) (HDetba - 1,3-diethyl-2-thiobarbituric acid) were synthesized and characterized by single-crystal and powder X-ray diffraction analysis, TG-DSC and FT-IR. Structural analysis revealed that (1) and (2) are discrete structures, in which M2+ ion (M = Co, Ni) is six-coordinated by water molecules and it forms an octahedron. The outer-sphere Detba- ions and H2O molecules participate in Osbnd H⋯(O/S) intermolecular hydrogen bonds which form the 2D layer. Thermal decomposition includes the stage of dehydration and the following stage of oxidation of Detba- with a release of CO2, SO2, H2O, NH3 and isocyanate gases.

  9. Fit 2-B FATHERS.

    Science.gov (United States)

    Maiorano, Joseph J.

    2001-01-01

    Fit 2-B FATHERS is a parenting-skills education program for incarcerated adult males. The goals of this program are for participants to have reduced recidivism rates and a reduced risk of their children acquiring criminal records. These goals are accomplished by helping participants become physically, practically, and socially fit for the demands…

  10. Saperi P2P

    Directory of Open Access Journals (Sweden)

    Salvatore Iaconesi

    2009-10-01

    Full Text Available Il paper presenta l'architettura filosofica e logica di un progetto ongoing per la creazione di un'infrastruttura peer to peer per la diffusione dei saperi. Tale infrastruttura p2p vuole essere la base per costruire un framework aperto e orizzontale, che ospiti pratiche innovative di creazione, condivisione e disseminazione di informazioni e conoscenza.

  11. Waardenburg syndrome 2

    OpenAIRE

    Uma Garg; Ritesh Surana

    2012-01-01

    Waardenburg syndrome (WS) is a rare disease characterised by sensorineural deafness in association with oculocutaneous pigmentary anomalies and dystopia canthorum. In this article, we report a 6-year-old boy with WS2, one of four clinical types of WS, for its rarity and relative paucity of reports in the otological literature. We also review the relevant literature of this rare disorder.

  12. Pesticider 2 i overfladevand

    DEFF Research Database (Denmark)

    Nyeland, B.; Kvamm, B. L.

    DMU har den 29. september 1999 afholdt en metodeafprøvning: Pesticider 2 i overfladevand. Der var tilmeldt 17 danske og udenlandske laboratorier i metodeafprøvningen. Prøvningen omfattede 32 pesticider i overfladevand fra en sjællandsk sø. Koncentrationsniveauet for hver komponent var på 0,025 - 0...

  13. Bike2Work 2014

    CERN Multimedia

    Herterich, Patricia Sigrid

    2014-01-01

    To celebrate the success of the 97 CERN teams, the participants gathered on Thursday 19th June at lunchtime for a "CERN critical mass". The bicyclists started at Restaurant 2 and cruised around the Meyrin site terminating with a photo session outside Restaurant 1. The colleagues based in Prevessin made a "pre-parade" to join their colleagues in Meyrin.

  14. Nd2(WO43

    Directory of Open Access Journals (Sweden)

    Matthias Weil

    2009-06-01

    Full Text Available The title compound, dineodymium(III tris[tungstate(VI], is a member of the Eu2(WO43 structure family and crystallizes isotypically with other rare earth tungstates and molybdates of this formula type. The structure is a derivative of the scheelite (CaWO4 structure and can be considered as an ordered defect variant with a threefold scheelite supercell and one rare earth (RE site unoccupied. The Nd3+ cations are coordinated by eight O atoms in form of a distorted bicapped trigonal prism. The two unique W cations are tetrahedrally surrounded by O atoms. One WO4 tetrahedron has 2 symmetry and is relatively undistorted whereas the other tetrahedron differs considerably from an ideal geometry. This is caused by an additional remote O atom at a distance of 2.149 (4 Å. The resulting WO4 + 1 polyhedra form W2O8 dimers through edge-sharing. Together with the WO4 and NdO8 units, the three-dimensional set-up is accomplished.

  15. Main: OCTAMOTIF2 [PLACE

    Lifescience Database Archive (English)

    Full Text Available OCTAMOTIF2 S000116 17-May-1998 (last modified) kehi Octamer motif found in histone-...gene-specific consensus sequences; 200 base upstream from the initiation codon ATG; Exist in all of seven plant histone genes; octamer; histone; meristem; maize (Zea mays); CGCGGCAT ...

  16. Web Development 2

    OpenAIRE

    Luján Mora, Sergio; Aragonés Ferrero, Jaume

    2008-01-01

    Curso "Web Development 2" sobre programación web con PHP para el "Máster doble competencia en ciencias informáticas y ciencias sociales" ("Master double competence in computer science and social science"). Proyecto TEMPUS JEP – 26235-2005.

  17. 2. biophysical work meeting

    International Nuclear Information System (INIS)

    The report comprises 18 papers held at the 2nd Biophysical Work Meeting, 11 - 13 September 1991 in Schlema, Germany. The history of biophysics in Germany particularly of radiation biophysics and radon research, measurements of the radiation effects of radon and the derivation of limits, radon balneotherapy and consequences of uranium ore mining are dealt with. (orig.)

  18. Intersection I-2

    CERN Multimedia

    1971-01-01

    Intersection I-2 of the ISR during the installation of experiments. On the left to the crossing region can be seen the massive iron plate structure of the muon detector being used by a British collaboration in a search for the intermediate vector boson. The magnet and hodoscopes on the right are part of the spectrometer arm of the Bristish-Scandinavian Collaration.

  19. Facts about Type 2

    Medline Plus

    Full Text Available ... can’t make enough insulin to keep your blood glucose levels normal. Type 2 is treated with lifestyle changes, ... may be starved for energy. Over time, high blood glucose levels may hurt your eyes, kidneys, nerves or heart. ...

  20. Wavetrain 2 : Deliverable 19

    DEFF Research Database (Denmark)

    Chozas, Julia Fernandez; Raventos, Alex

    in these areas in order to propose specific policies in case the impacts are negative or to increase their visibility in case they are positive and, of course, to monitor its development. This deliverable focuses on tools and methodologies that have been used or developed by Wavetrain2 fellows Alex Raventos (Wav...

  1. Web 2.0

    Institute of Scientific and Technical Information of China (English)

    胡泳

    2007-01-01

    Web 2.0是现在媒体上常见的名词,但究竟什么是Web 2.0?这个术语的始作俑者蒂姆·欧内利是这样定义的:“Web 2.0指网络作为平台,横跨所有互联设备;Web 2.0应用充分调动这一平台的内在优势:把软件作为不断升级的服务加以提供,使用软件的人越多,软件变得越好;这些应用从多种来源(包括个人用户)吸取和重混数据,与此同时,允许自己的数据和服务被他人重混。”这个定义由于技术化而显得晦涩难解。在另一处,欧内利举例

  2. Facts about Type 2

    Medline Plus

    Full Text Available ... 1 Type 2 About Us Online Community Meal Planning Sign In Search: Search More Sites Search ≡ Are ... Fitness Home Food MyFoodAdvisor Recipes Association Cookbook Recipes Planning Meals Diabetes Meal Plans Create Your Plate Gluten ...

  3. Facts about Type 2

    Medline Plus

    Full Text Available ... For Parents & Kids Safe at School Everyday Life Children and Type 2 Diabetes Know Your Rights Employment Discrimination Health Care Professionals ... and every 23 seconds someone new is diagnosed. Diabetes causes more deaths a year than breast cancer and AIDS combined. Your gift today will help ...

  4. Wavetrain 2 : Deliverable 29

    DEFF Research Database (Denmark)

    Crom, Izan Le; Pecher, Arthur; Parmeggiani, Stefano;

    Deliverable 29 describes a newly proposed methodology to evaluate the power performances of wave (and tidal) energy converters. This methodology has been applied within the Wavetrain2 project to evaluate the production of two wave energy conversion plants: the Pico OWC Plant and the Wave Dragon...

  5. Homogeneous M2 duals

    CERN Document Server

    Figueroa-O'Farrill, José

    2015-01-01

    Motivated by the search for new gravity duals to M2 branes with $N>4$ supersymmetry --- equivalently, M-theory backgrounds with Killing superalgebra $\\mathfrak{osp}(N|4)$ for $N>4$ --- we classify (except for a small gap) homogeneous M-theory backgrounds with symmetry Lie algebra $\\mathfrak{so}(n) \\oplus \\mathfrak{so}(3,2)$ for $n=5,6,7$. We find that there are no new backgrounds with $n=6,7$ but we do find a number of new (to us) backgrounds with $n=5$. All backgrounds are metrically products of the form $\\operatorname{AdS}_4 \\times P^7$, with $P$ riemannian and homogeneous under the action of $\\operatorname{SO}(5)$, or $S^4 \\times Q^7$ with $Q$ lorentzian and homogeneous under the action of $\\operatorname{SO}(3,2)$. At least one of the new backgrounds is supersymmetric (albeit with only $N=2$) and we show that it can be constructed from a supersymmetric Freund--Rubin background via a Wick rotation. Two of the new backgrounds have only been approximated numerically.

  6. Raising the bar (2)

    NARCIS (Netherlands)

    Elhorst, P.; Abreu, M.; Amaral, P.; Bhattacharjee, A.; Corrado, L.; Fingleton, B.; Fuerst, F.; Garretsen, H.; Igliori, D.; Le Gallo, J.; McCann, P.; Monastiriotis, V.; Pryce, G.; Yu, J.

    2016-01-01

    In this editorial we summarise and comment on the papers published in issue 11.2 so as to raise the bar in applied spatial economic research and highlight new trends. The first paper analyses which regions in Europe were resilient to the great Recession and which ones were not. The second and the th

  7. TC-2 Satellite Delivered

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    On April 18, 2005, TC-2, the second satellite of Double Star Program (DSP), which was jointly developed by CNSA and ESA, was approved to be delivered to the user after the on-board test and trial operation. The satellite is working well and the performance can meet the user's need. The satellite has collected large amount of valuable scientific data

  8. Facts about Type 2

    Medline Plus

    Full Text Available ... Native Americans, and Asian Americans/Pacific Islanders, as well as the aged population. Patient Education Materials — Taking ... Type 2 Diabetes Program donate en -- Diabetes Must Be Stopped - 2016-06-donation-en.html Diabetes Must ...

  9. (SS,2S,3S-2-(2-Methylpropan-2-sulfinamido-3-phenylbutyronitrile

    Directory of Open Access Journals (Sweden)

    Klaus Harms

    2009-11-01

    Full Text Available The absolute configuration has been determined for the title compound, C14H20N2OS. There are two independent molecules in the asymmetric unit. Intermolecular N—H...O hydrogen bonds are observed in the crystal packing, forming infinite chains with the base vectors [100] and [010]. Each chain contains only one of the two independent molecules.

  10. Reference: POLASIG2 [PLACE

    Lifescience Database Archive (English)

    Full Text Available POLASIG2 O'Neill SD, Kumagai MH, Majumdar A, Huand N, Sutliff TD, Rodriguez RL The ...alpha-amylase genes in Oryza sativa: Characterization of cDNA clones and mRNA expression during seed germina

  11. Main: POLASIG2 [PLACE

    Lifescience Database Archive (English)

    Full Text Available POLASIG2 S000081 17-May-1998 (last modified) kehi PolyA signal; poly A signal found... in rice alpha-amylase; -10 to -30 in the case of animal genes. AATAAA; AATAAT; AATTAAA; AATAAG; poly A signal; rice (Oryza sativa); animal; AATTAAA ...

  12. UNIVERSITET 2.0?

    DEFF Research Database (Denmark)

    Sarauw, Laura Louise

    2011-01-01

    Universitetsloven fra 2003 understreger som noget nyt, at universiteterne ved siden af de traditionelle forpligtelser på forskning og undervisning også skal ‘udveksle viden og kompetencer med det omgivende samfund’ (2003¿2). I de almindelige bemærkninger til loven indskærpes samtidig, at uddannel...

  13. RANCANG BANGUN ALAT PENJERNIH AIR LIMBAH CAIR LAUNDRY DENGAN MENGGUNAKAN MEDIA PENYARING KOMBINASI PASIR – ARANG AKTIF

    Directory of Open Access Journals (Sweden)

    Hery Setyobudiarso

    2014-05-01

    Full Text Available Perkembangan jasa pencucian pakaian (laundry berkontribusi pada peningkatan penggunaan air tanah dan pemakaian deterjen sehingga menghasilkan limbah cair yang dapat mencemari lingkungan. Oleh karena itu, diperlukan sistem pengolahan air limbah laundry menjadi air bersih. Tujuan penelitian ini adalah menentukan pengaruh bahan penyaring pasir silika, zeolit dan arang aktif terhadap hasil olahan air limbah laundry dan mengetahui  pengaruh tekanan dan waktu pemakaian reaktor penyaring. Metode pengolahan yang digunakan adalah filtrasi menggunakan filtrasi pasir silika, adsorpsi karbon aktif, serta gabungan pengolahan filtrasi pasir aktif dan adsorpsi karbon aktif untuk menghasilkan air bersih. Hasil penelitian menunjukkan bahwa metode pengolahan koagulasi dan flokulasi, filtrasi pasir aktif, adsorpsi karbon aktif serta gabungan filtrasi pasir aktif dan adsorpsi karbon aktif mampu menurunkan kekeruhan hingga batas maksimum air bersih. Karakteristik limbah laundry pada tekanan 1 bar memiliki nilai warna, COD dan TSS yang cenderung menurun dari menit ke 20 hingga menit ke 60 , warna nilai 138, COD 908 mg/l dan TSS 215 mg/l. Sedangkan pada tekanan 2 bar memiliki nilai warna, COD dan TSS yang cenderung menurun dari menit ke 20 hingga menit ke 60 , masing-masing masing-masing warna nilai 40, COD 746 mg/l dan TSS 210 mg/l.  Air yang dihasilkan bukan merupakan air bersih tetapi aman untuk dibuang ke lingkungan.

  14. Current Status of VHTR Technology Development

    Energy Technology Data Exchange (ETDEWEB)

    David Petti; Hans Gougar; Richard Wright; William Windes; Steve Herring; Richard Schultz; Paul Humrickhouse

    2010-10-01

    Abstract – High Temperature Gas-cooled Reactors (HTGRs) featuring particle fuel reached the stage of commercial deployment in the mid-1980s with the Fort St.Vrain and Thorium HochTemperatur Reaktor feeding electricity to the grids in the United States and West Germany, respectively. The technology was then adopted by Japan and China with the operation of the High Temperature Test Reactor in Oarai, Japan and the High Temperature Reactor (HTR-10) in China. Increasing the outlet temperature of the HTGR to even higher temperatures above 900°C will improve the thermodynamic efficiency of the system and enable application of a new class of gas reactor, the very high temperature reactor, to provide process heat, electricity, and hydrogen to chemical industries with the attendant benefits of improved energy security and reduced CO2 emissions. However, the increase in coolant outlet temperature presents a number of technical challenges associated with fuel, materials, power conversion, and analysis methods for the reactor and hydrogen production. The U.S. Department of Energy is sponsoring a broad program of research and development with a goal of addressing the technical challenges over a broad range of outlet temperatures as part of the Next Generation Nuclear Plant Project. This paper describes the research and development activities that are currently underway to realize the technologies needed for an HTGR that features outlet temperatures of 750 to 950°C.

  15. Pembuatan Nitroselulosa dari Kapas (Gossypium sp. dan Jerami (Oryza sativa Melalui Reaksi Nitrasi

    Directory of Open Access Journals (Sweden)

    Adly Rahmada

    2013-09-01

    Full Text Available Tujuan penelitian ini adalah mengetahui pengaruh bahan baku selulosa pada proses pembuatan nitroselulosa dari bahan selulosa kapas dan jerami dengan reaksi nitrasi, mempelajari pengaruh waktu dan suhu reaksi terhadap kualitas nitroselulosa yang dihasilkan, dan membandingkan kualitas nitroselulosa yang dihasilkan dari selulosa kapas dan jerami. Prosedur penelitian ini adalah menimbang dan memasak bahan baku dengan menggunakan larutan pemasak NaOH. Langkah selanjutnya adalah mereaksikan HNO3 dengan H2SO4 dan mengkondisikan reaktor sesuai dengan variabel suhu.Langkah berikutnya adalah mereaksikanbahan bakukapas atau jerami sesuai dengan variabel waktu. Langkah terakhir adalah mencucinya dengan aquadest dan larutan NaHCO3. Kemudian dilakukan pengukuran uji kelarutan untuk memperoleh persen yield dan uji FTIR. Kesimpulan yang dapat diperoleh dari penelitian ini adalah bahan baku selulosa jerami menghasilkan persen yield nitroselulosa produk lebih besar daripada kapas. Persen yield nitroselulosa jerami mencapai 86% sedangkan untuk kapas 68%. Pengaruh waktu reaksi nitrasi terhadap produk nitroselulosa didapatkan semakin bertambah waktu reaksi maka menghasilkan yield dan kandungan gugus nitro semakin besar. Sedangkan untuk pengaruh suhu reaksi didapatkan  semakin rendah suhu reaksi maka persen yield dan gugus nitro yang diperoleh semakin besar. Perbedaan kualitas nitroselulosa dari bahan baku kapas dan jerami ditunjukkan dengan substitusi gugus nitro dari produk nitroselulosa, maka dapat diketahui bahwa nitroselulosa dari kedua bahan baku memiliki kualias yang hampir sama dengan dua substitusi gugus nitro.

  16. Nuclear Reactor RA Safety Report, Vol. 4, Reactor

    International Nuclear Information System (INIS)

    RA research reactor is thermal heavy water moderated and cooled reactor. Metal uranium 2% enriched fuel elements were used at the beginning of its operation. Since 1976, 80% enriched uranium oxide dispersed in aluminium fuel elements were gradually introduced into the core and are the only ones presently used. Reactor core is cylindrical, having diameter 40 cm and 123 cm high. Reaktor core is made up of 82 fuel elements in aluminium channels, lattice is square, lattice pitch 13 cm. Reactor vessel is cylindrical made of 8 mm thick aluminium, inside diameter 140 cm and 5.5 m high surrounded with neutron reflector and biological shield. There is no containment, the reactor building is playing the shielding role. Three pumps enable circulation of heavy water in the primary cooling circuit. Degradation of heavy water is prevented by helium cover gas. Control rods with cadmium regulate the reactor operation. There are eleven absorption rods, seven are used for long term reactivity compensation, two for automatic power regulation and two for safety shutdown. Total anti reactivity of the rods amounts to 24%. RA reactor is equipped with a number of experimental channels, 45 vertical (9 in the core), 34 in the graphite reflector and two in the water biological shield; and six horizontal channels regularly distributed in the core. This volume include detailed description of systems and components of the RA reactor, reactor core parameters, thermal hydraulics of the core, fuel elements, fuel elements handling equipment, fuel management, and experimental devices

  17. Current Status of VHTR Technology Development

    International Nuclear Information System (INIS)

    High Temperature Gas-cooled Reactors (HTGRs) featuring particle fuel reached the stage of commercial deployment in the mid-1980s with the Fort St.Vrain and Thorium HochTemperatur Reaktor feeding electricity to the grids in the United States and West Germany, respectively. The technology was then adopted by Japan and China with the operation of the High Temperature Test Reactor in Oarai, Japan and the High Temperature Reactor (HTR-10) in China. Increasing the outlet temperature of the HTGR to even higher temperatures above 900 C will improve the thermodynamic efficiency of the system and enable application of a new class of gas reactor, the very high temperature reactor, to provide process heat, electricity, and hydrogen to chemical industries with the attendant benefits of improved energy security and reduced CO2 emissions. However, the increase in coolant outlet temperature presents a number of technical challenges associated with fuel, materials, power conversion, and analysis methods for the reactor and hydrogen production. The U.S. Department of Energy is sponsoring a broad program of research and development with a goal of addressing the technical challenges over a broad range of outlet temperatures as part of the Next Generation Nuclear Plant Project. This paper describes the research and development activities that are currently underway to realize the technologies needed for an HTGR that features outlet temperatures of 750 to 950 C.

  18. Sintesis Molibdenum Oksida Berpenyangga Silika sebagai Katalis pada Reaksi Oksidasi Etanol Menjadi Asetaldehida

    Directory of Open Access Journals (Sweden)

    Achyar Rasyidi

    2015-06-01

    Full Text Available Oksidasi etanol membentuk asetaldehida dengan menggunakan katalis molibdenum oksida berpenyangga silika oksida telah dilakukan. Preparasi katalis dilakukan dengan metode impregnasi dengan rasio Mo : Si 1 : 1, 3 : 1, 6 : 1, 9 : 1. Karakterisasi katalis dilakukan menggunakan X-Ray Difractometer (XRD. Hasil identifikasi menunjukkan bahwa komponen katalis yang telah dibuat mengandung kristal MoO3 dan SiO2. Uji kinerja katalis dilakukan terhadap reaksi oksidasi etanol menjadi asetaldehida. Reaksi oksidasi dilangsungkan dalam reaktor pipa lurus berunggun tetap yang beroperasi pada suhu 200oC, 225oC, 250oC, 275oC, 300oC, 325oC, dan 350oC pada tekanan atmosfir. Hasil uji kinerja menunjukkan bahwa konversi tertinggi diperoleh sebesar 91,99% pada temperatur 350oC menggunakan katalis dengan rasio Mo : Si = 9 : 1. Selektivitas tertinggi diperoleh sebesar 89,10% pada temperatur 200oC dengan rasio Mo : Si = 9 : 1. Yield tertinggi diperoleh sebesar 74,80% pada temperatur 350oC pada katalis dengan rasio Mo : Si = 9 : 1.

  19. Radioactivity of spent TRIGA fuel

    International Nuclear Information System (INIS)

    Some of the oldest TRIGA fuel in the Malaysian Reaktor TRIGA PUSPATI (RTP) is approaching the limit of its end of life with burn-up of around 20%. Hence it is prudent for us to start planning on the replacement of the fuel in the reactor and other derivative activities associated with it. In this regard, we need to understand all of the risk associated with such operation and one of them is to predict the radioactivity of the fuel, so as to estimate the safety of our working conditions. The radioactivity of several fuels are measured and compared with simulation results to confirm the burnup levels of the selected fuels. The radioactivity measurement are conducted inside the water tank to reduce the risk of exposure and in this case the detector wrapped in plastics are lowered under water. In nuclear power plant, the general practice was to continuously burn the fuel. In research reactor, most operations are based on the immediate needs of the reactor and our RTP for example operate periodically. By integrating the burnup contribution for each core configuration, we simplify the simulation of burn up for each core configuration. Our results for two (2) fuel however indicates that the dose from simulation underestimate the actual dose from our measurements. Several postulates are investigated but the underlying reason remain inconclusive

  20. Radioactivity of spent TRIGA fuel

    Energy Technology Data Exchange (ETDEWEB)

    Usang, M. D., E-mail: mark-dennis@nuclearmalaysia.gov.my; Nabil, A. R. A.; Alfred, S. L.; Hamzah, N. S.; Abi, M. J. B.; Rawi, M. Z. M.; Abu, M. P. [Reactor Department, Malaysian Nuclear Agency, Bangi, 43000 Kajang, Selangor (Malaysia)

    2015-04-29

    Some of the oldest TRIGA fuel in the Malaysian Reaktor TRIGA PUSPATI (RTP) is approaching the limit of its end of life with burn-up of around 20%. Hence it is prudent for us to start planning on the replacement of the fuel in the reactor and other derivative activities associated with it. In this regard, we need to understand all of the risk associated with such operation and one of them is to predict the radioactivity of the fuel, so as to estimate the safety of our working conditions. The radioactivity of several fuels are measured and compared with simulation results to confirm the burnup levels of the selected fuels. The radioactivity measurement are conducted inside the water tank to reduce the risk of exposure and in this case the detector wrapped in plastics are lowered under water. In nuclear power plant, the general practice was to continuously burn the fuel. In research reactor, most operations are based on the immediate needs of the reactor and our RTP for example operate periodically. By integrating the burnup contribution for each core configuration, we simplify the simulation of burn up for each core configuration. Our results for two (2) fuel however indicates that the dose from simulation underestimate the actual dose from our measurements. Several postulates are investigated but the underlying reason remain inconclusive.

  1. Radioactivity of spent TRIGA fuel

    Science.gov (United States)

    Usang, M. D.; Nabil, A. R. A.; Alfred, S. L.; Hamzah, N. S.; Abi, M. J. B.; Rawi, M. Z. M.; Abu, M. P.

    2015-04-01

    Some of the oldest TRIGA fuel in the Malaysian Reaktor TRIGA PUSPATI (RTP) is approaching the limit of its end of life with burn-up of around 20%. Hence it is prudent for us to start planning on the replacement of the fuel in the reactor and other derivative activities associated with it. In this regard, we need to understand all of the risk associated with such operation and one of them is to predict the radioactivity of the fuel, so as to estimate the safety of our working conditions. The radioactivity of several fuels are measured and compared with simulation results to confirm the burnup levels of the selected fuels. The radioactivity measurement are conducted inside the water tank to reduce the risk of exposure and in this case the detector wrapped in plastics are lowered under water. In nuclear power plant, the general practice was to continuously burn the fuel. In research reactor, most operations are based on the immediate needs of the reactor and our RTP for example operate periodically. By integrating the burnup contribution for each core configuration, we simplify the simulation of burn up for each core configuration. Our results for two (2) fuel however indicates that the dose from simulation underestimate the actual dose from our measurements. Several postulates are investigated but the underlying reason remain inconclusive.

  2. Neutron diffraction study of magnetic ordering in PrCu2Si2, PrCu2Ge2, PrFe2Ge2 and NdFe2Ge2

    International Nuclear Information System (INIS)

    A neutron diffraction study of polycrystalline PrCu2Si2, PrCu2Ge2, PrFe2Ge2 and NdFe2Ge2 intermetallics carried out at liquid helium temperature shows the presence of a collinear antiferromagnetic order below Tsub(N). Magnetic moment, parallel to the c-axis is localized on RE ions only. The magnetic structure of these compounds consists of ferromagnetic layers perpendicular to the c-axis coupled antiferromagnetically with sequence +-+- for PrCu2Si2 and PrCu2Ge2 and +--+ for PrFe2Ge2 and NdFe2Ge2. The RE moments amount close to the free ion values for Fe containing compounds but are smaller in those containing Cu suggesting a fairly strong influence of crystal field. (author)

  3. Main: O2F1BE2S1 [PLACE

    Lifescience Database Archive (English)

    Full Text Available O2F1BE2S1 S000162 17-May-1998 (last modified) kehi opaque-2 recognition site F1 in ...Bertholletia excelsa (Brazil nut tree) 2S storage protein gene (be2S1); O2 protein binds to F1, F2 and F3 sequences of be2S1... promoter; F1 is hybrid C/G box; O2; opaque-2; be2S1; F1; seed; Brazil nut tree (Bertholletia excelsa); TCCACGTCGA ...

  4. Measurement of the 2 sup 2 S sub 1/2 -2 sup 2 P sub 3/2 fine structure interval in muonium

    Energy Technology Data Exchange (ETDEWEB)

    Kettell, S.H.

    1990-08-01

    The (2{sup 2}S{sub 1/2} {minus} 2{sup 2}P{sub 3/2}) fine structure transition in muonium has been observed for the first time. The measured value is 9895 {sub {minus}30}{sup {plus}35}MHz. This measurement, when included with the theoretical value for the 2{sup 2}P{sub 1/2} {minus} 2{sup 2}P{sub 3/2} fine structure interval, gives a value for the Lamb shift (2{sup 2}S{sub 1/2} {minus} 2{sup 2}P{sub 1/2}) independent of previous direct measurements. From the theoretical value for the fine structure interval, 10921.833(3) MHz, the value for the Lamb shift determined from this experiment is 1027{sub {minus}35}{sup {plus}30} MHz and is in agreement with the prediction of quantum electrodynamics (QED) of 1047.5(3) MHz. Previous experimental values for the Lamb shift (2{sup 2}S{sub 1/2} {minus}2{sup 2}P{sub 1/2}) in muonium are 1070{sub {minus}15}{sup {plus} 12} MHz and 1042{sub {minus}23}{sup {plus}21} MHz. Combining this result with these previous results gives a new experimental value of 1058{sub {minus}12}{sup {plus}10} for the Lamb shift in muonium. Muonium, the bound state of two structureless leptons ({mu}{sup +}e{sup {minus}}), is an ideal system for testing bound state QED because of the lack of hadronic structure as exists in the hydrogen system. The measurement makes use of the techniques of atomic beam microwave spectroscopy. Muonium atoms ({mu}{sup +}e{sup {minus}}) in the 2S states are produced by the beam-foil technique at the Clinton P. Anderson Meson Physics Facility with a low momentum, sub-surface muon beam. A variable frequency microwave field is applied to drive the atoms from the 2S to the 2P states, with the subsequent observation of the Lyman alpha photon from the decay of the 2P state to the 1S ground state. The frequency is varied from 9.0--11.0 GHz, driving the F = 0 {yields} F = 1, F = 1, F = 1 and F = 1 {yields} F = 2 transitions.

  5. [2.2]Paracyclophane derivatives containing tetrathiafulvalene moieties

    Directory of Open Access Journals (Sweden)

    Laura G. Sarbu

    2015-10-01

    Full Text Available The synthesis of [2.2]paracyclophane derivatives containing tetrathiafulvalene units has been accomplished by the coupling reaction of 4-([2.2]paracyclophan-4-yl-1,3-dithiol-2-thione in the presence of trimethylphosphite. The 1,3-dithiol-2-thione derivative was in turn synthesized by the regioselective bromination of 4-acetyl[2.2]paracyclophane, then through the corresponding dithiocarbamates and 1,3-dithiolium salts.

  6. [2.2]Paracyclophane derivatives containing tetrathiafulvalene moieties

    OpenAIRE

    Sarbu, Laura G; Bahrin, Lucian G.; Jones, Peter G.; Lucian M. Birsa; Henning Hopf

    2015-01-01

    The synthesis of [2.2]paracyclophane derivatives containing tetrathiafulvalene units has been accomplished by the coupling reaction of 4-([2.2]paracyclophan-4-yl)-1,3-dithiol-2-thione in the presence of trimethylphosphite. The 1,3-dithiol-2-thione derivative was in turn synthesized by the regioselective bromination of 4-acetyl[2.2]paracyclophane, then through the corresponding dithiocarbamates and 1,3-dithiolium salts.

  7. [2.2]Paracyclophane derivatives containing tetrathiafulvalene moieties.

    Science.gov (United States)

    Sarbu, Laura G; Bahrin, Lucian G; Jones, Peter G; Birsa, Lucian M; Hopf, Henning

    2015-01-01

    The synthesis of [2.2]paracyclophane derivatives containing tetrathiafulvalene units has been accomplished by the coupling reaction of 4-([2.2]paracyclophan-4-yl)-1,3-dithiol-2-thione in the presence of trimethylphosphite. The 1,3-dithiol-2-thione derivative was in turn synthesized by the regioselective bromination of 4-acetyl[2.2]paracyclophane, then through the corresponding dithiocarbamates and 1,3-dithiolium salts. PMID:26664611

  8. Biosphere2 and Earthbuzz

    Science.gov (United States)

    Washburne, J. C.

    2009-12-01

    In an attempt to reach a broader audience, Biosphere 2, near Tucson, AZ, is participating in a network of science centers thanks to new funding through the Science Museum of Minnesota (SMM) and the National Center for Earth System Dynamics (NCED). Each of these centers will be tied together through an Earthbuzz kiosk, basically a networked web site that allows visitors to learn more about the work of leading local scientists in a very personal and captivating format. Content is currently being developed by Biosphere 2 researchers, staff, and graduate students that range from a public question and answer forum called “Scientist on the Spot” to science blogs by Biosphere 2 Fellows. It is hoped that this project will help educate the public about the Anthropocene, that is, the current geologic period that is so greatly affected by humankind’s impact on the health of the planet. Biosphere 2 provides a unique location to engage the public in this conversation for several reasons. First, no other destination on Earth gives the public such a physical immersion into what climate change might mean as does Biosphere 2. On the regular walking tour, visitors are guided through scaled down versions of an African savannah, a semi-arid thorn scrub, a coastal fog desert and a tropical rainforest. Digital displays of temperature and humidity confirm what your body is feeling - conditions ranging from desert aridity to tropical humidity. As one passes through the biomes of Biosphere 2, climate change is a whole body experience. Second, Biosphere 2 is also an active ecological research site - part of a unique network of sites run by the University of Arizona that allow scientists to study ecosystem processes across a range of scales - from microscopic root studies to studies encompassing large watersheds. In particular, a group of researchers is studying why large stands of pinion-juniper forests across the southwest have died in recent years. Biosphere2’s role in this

  9. Sentinel-2 Mission status

    Science.gov (United States)

    Hoersch, Bianca; Colin, Olivier; Gascon, Ferran; Arino, Olivier; Spoto, Francois; Marchese, Franco; Krassenburg, Mike; Koetz, Benjamin

    2016-04-01

    Copernicus is a joint initiative of the European Commission (EC) and the European Space Agency (ESA), designed to establish a European capacity for the provision and use of operational monitoring information for environment and security applications. Within the Copernicus programme, ESA is responsible for the development of the Space Component, a fully operational space-based capability to supply earth-observation data to sustain environmental information Services in Europe. The Sentinel missions are Copernicus dedicated Earth Observation missions composing the essential elements of the Space Component. In the global Copernicus framework, they are complemented by other satellites made available by third-parties or by ESA and coordinated in the synergistic system through the Copernicus Data-Access system versus the Copernicus Services. The Copernicus Sentinel-2 mission provides continuity to services relying on multi-spectral high-resolution optical observations over global terrestrial surfaces. Sentinel-2 capitalizes on the technology and the vast experience acquired in Europe and the US to sustain the operational supply of data for services such as forest monitoring, land cover changes detection or natural disasters management. The Sentinel-2 mission offers an unprecedented combination of the following capabilities: ○ Systematic global coverage of land surfaces: from 56°South to 84°North, coastal waters and Mediterranean sea; ○ High revisit: every 5 days at equator under the same viewing conditions with 2 satellites; ○ High spatial resolution: 10m, 20m and 60m; ○ Multi-spectral information with 13 bands in the visible, near infra-red and short wave infra-red part of the spectrum; ○ Wide field of view: 290 km. The data from the Sentinel-2 mission are available openly and freely for all users with online easy access since December 2015. The presentation will give a status report on the Sentinel-2 mission, and outlook for the remaining ramp-up Phase, the

  10. 17 CFR 2.2 - Authority to affix seal.

    Science.gov (United States)

    2010-04-01

    ... 17 Commodity and Securities Exchanges 1 2010-04-01 2010-04-01 false Authority to affix seal. 2.2 Section 2.2 Commodity and Securities Exchanges COMMODITY FUTURES TRADING COMMISSION OFFICIAL SEAL § 2.2 Authority to affix seal. (a) The following officials of the Commodity Futures Trading Commission...

  11. 40 CFR 2.216-2.300 - [Reserved

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 1 2010-07-01 2010-07-01 false 2.216-2.300 Section 2.216-2.300 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY GENERAL PUBLIC INFORMATION Confidentiality of Business Information §§ 2.216-2.300...

  12. 28 CFR 2.2 - Eligibility for parole; adult sentences.

    Science.gov (United States)

    2010-07-01

    ... 28 Judicial Administration 1 2010-07-01 2010-07-01 false Eligibility for parole; adult sentences. 2.2 Section 2.2 Judicial Administration DEPARTMENT OF JUSTICE PAROLE, RELEASE, SUPERVISION AND... § 2.2 Eligibility for parole; adult sentences. (a) A Federal prisoner serving a maximum term or...

  13. Spiral 2 workshop

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2004-07-01

    The accelerator and experimental facilities at GANIL will be transformed over the next 5-10 years. The centerpiece of the additions to the accelerator complex will be Spiral-2. This is the first phase of a new radioactive beam facility based on the ISOL principle. The main aim of Spiral-2 will be to produce intense, high quality beams of neutron-rich nuclei created in neutron-induced fission of heavy elements and accelerated by the existing CIME cyclotron. The principal aims of this workshop will be a) to publicize the new facilities, b) to discuss and define the science which might be carried out with them, c) to discuss the instrumentation and infrastructure required to exploit the new facilities and d) to help form collaborations of scientists wishing to design and construct the equipment needed to undertake the science programme. This document gathers most of the slides presented in the workshop.

  14. Reactor BR2. Introduction

    International Nuclear Information System (INIS)

    The BR2 is a materials testing reactor and is still one of SCK-CEN's important nuclear facilities. After an extensive refurbishment to compensate for the ageing of the installation, the reactor was restarted in April 1997. During the last three years, the availability of the installation was maintained at an average level of 97.6 percent. In the year 2000, the reactor was operated for a total of 104 days at a mean power of 56 MW. In 2000, most irradiation experiments were performed in the CALLISTO PWR loop. The report describes irradiations achieved or under preparation in 2000, including the development of advanced facilities and concept studies for new programmes. An overview of the scientific irradiation programmes as well as of the R and D programme of the BR2 reactor in 2000 is given

  15. Design basis 2

    Energy Technology Data Exchange (ETDEWEB)

    Larsen, G.; Soerensen, P. [Risoe National Lab., Roskilde (Denmark)

    1996-09-01

    Design Basis Program 2 (DBP2) is comprehensive fully coupled code which has the capability to operate in the time domain as well as in the frequency domain. The code was developed during the period 1991-93 and succeed Design Basis 1, which is a one-blade model presuming stiff tower, transmission system and hub. The package is designed for use on a personal computer and offers a user-friendly environment based on menu-driven editing and control facilities, and with graphics used extensively for the data presentation. Moreover in-data as well as results are dumped on files in Ascii-format. The input data is organized in a in-data base with a structure that easily allows for arbitrary combinations of defined structural components and load cases. (au)

  16. MPEG-2纵览

    Institute of Scientific and Technical Information of China (English)

    郑文里

    1995-01-01

    MPEG是英文Moving Picture Expert Group的简称。MPEG早在1988年便开始着手制定视频信号及其伴音压缩的国际标准。目前已相继出台了两个标准,即MPEG-1、MPEG-2。MPEG-2是MPEG-1的扩展,其功能更丰富、更完善,它支持多种采样格式的逐行/隔行视频信号,支持恒速率刚技变速率两种编码方法,支持对比特流的编辑等功能,并在一定条件下与MPEG-1保持前向/后向兼容。

  17. Reactor BR2. Introduction

    Energy Technology Data Exchange (ETDEWEB)

    Gubel, P

    2002-04-01

    The BR2 materials testing reactor is one of SCK-CEN's most important nuclear facilities. After an extensive refurbishment to compensate for the ageing of the installation, the reactor was restarted in April 1997. In 2001, the reactor was operated for a total of 123 days at a mean power of 59 MW in order to satisfy the irradiation conditions of the internal and external programmes using mainly the CALLISTO PWR loop. The mean consumption of fresh fuel elements was 5.26 per 1000 MWd. Main achievements in 2001 included the development of a three-dimensional full-scale model of the BR2 reactor for simulation and prediction of irradiation conditions for various experiments; the construction of the FUTURE-MT device designed for the irradiation of fuel plates under representative conditions of geometry, neutron spectrum, heat flux and thermal-hydraulic conditions and the development of in-pile instrumentation and a data acquisition system.

  18. Reactor BR2. Introduction

    Energy Technology Data Exchange (ETDEWEB)

    Gubel, P

    2001-04-01

    The BR2 is a materials testing reactor and is still one of SCK-CEN's important nuclear facilities. After an extensive refurbishment to compensate for the ageing of the installation, the reactor was restarted in April 1997. During the last three years, the availability of the installation was maintained at an average level of 97.6 percent. In the year 2000, the reactor was operated for a total of 104 days at a mean power of 56 MW. In 2000, most irradiation experiments were performed in the CALLISTO PWR loop. The report describes irradiations achieved or under preparation in 2000, including the development of advanced facilities and concept studies for new programmes. An overview of the scientific irradiation programmes as well as of the R and D programme of the BR2 reactor in 2000 is given.

  19. 1-[(E-2-(2-Hydroxy-5-methylphenyldiazen-2-ium-1-yl]naphthalen-2-olate

    Directory of Open Access Journals (Sweden)

    Salah Eddine Bouaoud

    2013-08-01

    Full Text Available The title zwitterion, C17H14N2O2, crystallizes with two independent molecules in the asymmetric unit, both of which are approximately planar, the dihedral angles between the benzene ring and the naphthalene ring system being 4.39 (12° in one molecule and 5.83 (12° in the other, and show an E conformation with respect to the azo double bond. An intramolecular N—H...O hydrogen bond in each molecule helps to establish their near planar conformation. In the crystal, molecules are linked through O—H...O hydrogen bonds into infinite chains running along the a-axis direction. In addition, the chains are stacked along the b axis via π–π interactions between the benzene and the naphthalene rings of adjacent molecules, the centroid–centroid distances being 3.722 (3 and 3.823 (4 Å.

  20. Wavetrain 2 : Deliverable 28

    DEFF Research Database (Denmark)

    Chozas, Julia Fernandez

    This deliverable presents a selection of case studies on socio-economic aspects of wave energy, developed by Wavetrain2 partners SPOK and WavEC, that represent key areas of research during the WT2 period. More information and a few other case studies can be also found in the previous deliverables D......9 and D19. The first case study looks into the impact of integrating of wave energy into electricity markets. From the results it is expected that the costs of balancing wave power are smaller than those faced currently by wind power, and that any combination of wave technologies and wave and wind...... Denmark (the Danish TSO) and counts with the interest and collaboration of the wave device developers Pelamis, Wave Dragon and Wavestar. The second case study assesses the macro-economic impact of the introduction of a 100MW farm in Portugal. An Input-Output model based on Leontief theory was developed...

  1. 2-Cyanoanilinium tetrafluoroborate

    Directory of Open Access Journals (Sweden)

    Yi Zhang

    2009-10-01

    Full Text Available In the title compound, C7H7N2+·BF4−, the non-H atoms of the cation are almost coplanar (r.m.s. deviation = 0.035 Å. The cations and anions are connected by intermolecular N—H...F and N—H...N hydrogen bonds, forming a two-dimensional network parallel to (10overline{1}.

  2. Waardenburg syndrome 2

    Directory of Open Access Journals (Sweden)

    Uma Garg

    2012-01-01

    Full Text Available Waardenburg syndrome (WS is a rare disease characterised by sensorineural deafness in association with oculocutaneous pigmentary anomalies and dystopia canthorum. In this article, we report a 6-year-old boy with WS2, one of four clinical types of WS, for its rarity and relative paucity of reports in the otological literature. We also review the relevant literature of this rare disorder.

  3. Pyridine-2-carbaldehyde thiosemicarbazone

    OpenAIRE

    Sheng-Xiang Yang; Kun Jiang; Xiang Zhang; Li-Hua Song

    2009-01-01

    The asymmetric unit of the title compound, C7H8N4S, contains two independent molecules with slightly different conformations; the dihedral angles between the pyridine ring and mean plane of the thiosemicarbazone unit in the two molecules are 2.88 (5) and 6.30 (5)°. Intermolecular N—H...N and N—H...S hydrogen bonds link the molecules into layers parallel to the ab plane.

  4. Pyridine-2-carbaldehyde thiosemicarbazone

    Directory of Open Access Journals (Sweden)

    Sheng-Xiang Yang

    2009-02-01

    Full Text Available The asymmetric unit of the title compound, C7H8N4S, contains two independent molecules with slightly different conformations; the dihedral angles between the pyridine ring and mean plane of the thiosemicarbazone unit in the two molecules are 2.88 (5 and 6.30 (5°. Intermolecular N—H...N and N—H...S hydrogen bonds link the molecules into layers parallel to the ab plane.

  5. Bike2Work 2015

    CERN Multimedia

    AUTHOR|(SzGeCERN)439147

    2015-01-01

    To celebrate the success of the 126 CERN teams (to be compared to the 97 teams of the year before), the participants gathered on Tuesday 23rd June at lunchtime for a "CERN critical mass". The bicyclists started at Restaurant 2 and cruised around the Meyrin site terminating with a photo session outside Restaurant 1. The colleagues based in Prevessin made a "pre-parade" to join their colleagues in Meyrin. The parade was escorted by the CERN Fire Brigade.

  6. Phenyl N-(2-methylphenylcarbamate

    Directory of Open Access Journals (Sweden)

    Durre Shahwar

    2009-07-01

    Full Text Available In the title compound, C14H13NO2, the aromatic rings attached to the O and N atoms make dihedral angles of 62.65 (9 and 38.28 (11°, respectively, with the central carbamate group. The benzene rings are oriented at a dihedral angle of 39.22 (10°. In the crystal, a very weak C—H...π interaction occurs.

  7. Indexing dif/2

    OpenAIRE

    Neumerkel, Ulrich; Kral, Stefan

    2016-01-01

    Many Prolog programs are unnecessarily impure because of inadequate means to express syntactic inequality. While the frequently provided built-in `dif/2` is able to correctly describe expected answers, its direct use in programs often leads to overly complex and inefficient definitions --- mainly due to the lack of adequate indexing mechanisms. We propose to overcome these problems by using a new predicate that subsumes both equality and inequality via reification. Code complexity is reduced ...

  8. Beyond CMOS nanodevices 2

    CERN Document Server

    Balestra, Francis

    2014-01-01

    This book offers a comprehensive review of the state-of-the-art in innovative Beyond-CMOS nanodevices for developing novel functionalities, logic and memories dedicated to researchers, engineers and students. The book will particularly focus on the interest of nanostructures and nanodevices (nanowires, small slope switches, 2D layers, nanostructured materials, etc.) for advanced More than Moore (RF-nanosensors-energy harvesters, on-chip electronic cooling, etc.) and Beyond-CMOS logic and memories applications.

  9. STS-2 medical report

    Science.gov (United States)

    Pool, S. L. (Editor); Johnson, P. C., Jr. (Editor); Mason, J. A. (Editor)

    1982-01-01

    All medially related activities of the Space Transportation System 2 flight are described, ranging from preflight to postflight. Several medical problems occured during the flight. Their was marginal operation on-board potable water system caused by a malfunctioning fuel cell. Work and rest cycles by the crew were altered to maximize the scientific data acquisition. Inadequate time was allocated for food preparation and consumption. There was low water intake by the crew because of the water shortage.

  10. Description of the $2\

    CERN Document Server

    Raduta, C M

    2010-01-01

    A many body Hamiltonian involving the mean field for a projected spherical single particle basis, the pairing interactions for alike nucleons and the dipole-dipole proton-neutron interactions in the particle-hole ($ph$) and particle-particle ($pp$) channels is treated by the projected gauge fully renormalized proton-neutron quasiparticle random phase approximation (PGFRpnQRPA) approach. The resulting wave functions and energies for the mother and the daughter nuclei are used to calculate the $2\

  11. CPLOAS_2 User Manual.

    Energy Technology Data Exchange (ETDEWEB)

    Sallaberry, Cedric Jean-Marie [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Helton, Jon C. [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

    2015-05-01

    Weak link (WL)/strong link (SL) systems are important parts of the overall operational design of high - consequence systems. In such designs, the SL system is very robust and is intended to permit operation of the entire system under, and only under, intended conditions. In contrast, the WL system is intended to fail in a predictable and irreversible manner under accident conditions and render the entire system inoperable before an accidental operation of the SL system. The likelihood that the WL system will fail to d eactivate the entire system before the SL system fails (i.e., degrades into a configuration that could allow an accidental operation of the entire system) is referred to as probability of loss of assured safety (PLOAS). This report describes the Fortran 90 program CPLOAS_2 that implements the following representations for PLOAS for situations in which both link physical properties and link failure properties are time - dependent: (i) failure of all SLs before failure of any WL, (ii) failure of any SL before f ailure of any WL, (iii) failure of all SLs before failure of all WLs, and (iv) failure of any SL before failure of all WLs. The effects of aleatory uncertainty and epistemic uncertainty in the definition and numerical evaluation of PLOAS can be included in the calculations performed by CPLOAS_2. Keywords: Aleatory uncertainty, CPLOAS_2, Epistemic uncertainty, Probability of loss of assured safety, Strong link, Uncertainty analysis, Weak link

  12. APL2 in depth

    CERN Document Server

    Thomson, Norman D

    1995-01-01

    This book is designed for people with a working knowledge of APL who would like to increase their fluency in the wide range of extra facilities offered by second-generation APL products. Although the primary product in view is IBM's APL2 as implemented on mainframe, PC and RS/6000, the language fea­ tures covered share considerable common ground with APL *PLUS II and Oyalog APL. This is a book about skills rather than knowledge, and an acquaintance with some variety of APL on the reader's part is assumed from the start. It is designed to be read as a continuous text, interspersed with exer­ cises designed to give progressively deeper insight into what the authors conceive as the features which have the greatest impact on programming techniques. It would also be suitable as a text-book for a second course in APL2, although experience suggests that most programming language learning is now by self­ study, so that this volume is more likely to provide follow-up reading to more elementary texts such as "APL2 a...

  13. 2-Bromobeclometasone dipropionate

    Directory of Open Access Journals (Sweden)

    Kamal Aziz Ketuly

    2009-08-01

    Full Text Available In the crystal structure of 2-bromobeclometasone dipropionate [systematic name: (8S,9R,10S,11S,13S,14S,16S,17R-2-bromo-9α-chloro-11-hydroxy-10,13,16-trimethyl-3-oxo-17-[2-(propionyloxyacetyl]-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl propionate], C28H36BrClO7, the six-membered ring with the 1,4-diene-3-one composition is planar (r.m.s. deviations = 0.03 and 0.04 Å for the two independent molecules, whereas the remaining six-membered rings have chair conformations. Each of the independent molecules self-associates via O—H...Opropionate hydrogen bonding, generating a supramolecular chain running along the b axis. The crystal is twinned, with the monoclinic unit cell emulating an orthorhomic crystal system; the major twin component constitutes approximately 60%.

  14. T2K & beyond

    CERN Document Server

    Catanesi, M G

    2016-01-01

    This article presents the status of the art of the T2K experiment and the measurements prospects for the incoming years. After a brief description of the experiment, the most recent results will be illustrated. The observation of the electron neutrino appearance in a muon neutrino beam and the new high-precision measurements of the mixing angle theta13 by the reactor experiments have led to a re-evaluation of the expected sensitivity to the oscillation parameters, relative to what was given in the original T2K proposal. For this reason the new physics potential of T2K for 7.8 x 10**21 p.o.t. and for a data exposure 3 times larger than it's expected to be reachable with accelerator and beam line upgrades in 2026 before the start of operation of the next generation of long-baseline neutrino oscillation experiments will also be described in the text. In particular the last challenging scenario opens the door to the possibility to obtain, under some conditions, a 3 sigma measurement excluding sin(deltaCP= 0.

  15. UPSS and G2

    Science.gov (United States)

    Dito, Scott J.

    2014-01-01

    The Universal Propellant Servicing System (UPSS) is a dedicated mobile launcher propellant delivery method that will minimize danger and complexity in order to allow vehicles to be serviced and ultimately launched from a variety of locations previously not seen fit for space launch. The UPPS/G2 project is the development of a model, simulation, and ultimately a working application that will control and monitor the cryogenic fluid delivery to the rocket for testing purposes. To accomplish this, the project is using the programming language/environment Gensym G2. The environment is an all-inclusive application that allows development, testing, modeling, and finally operation of the unique application through graphical and programmatic methods. We have learned G2 through classes and trial-and-error, and are now in the process of building the application that will soon be able to be tested on apparatuses here at Kennedy Space Center, and eventually on the actual unit. The UPSS will bring near-autonomous control of launches to those that need it, as well it will be a great addition to NASA and KSC's operational viability and the opportunity to bring space launches to parts of the world, and in time constraints, once not thought possible.

  16. Parsivel2 Handbook

    Energy Technology Data Exchange (ETDEWEB)

    Bartholomew, MJ [Brookhaven National Laboratory

    2014-06-13

    In order to improve the quantitative description of precipitation processes in climate models, the ARM program has been collecting observations of the drop size spectra of rain events since early in 2006. ARM purchased Parsivel2 laser disdrometers with America Recovery Act funds and they have proven to be robust in the field. They make observations of the particle size distribution over the range of 0.06mm to 24mm and classify precipitation type. To date they have been deployed on board the Spirit Horizon during the MAGIC Field Campaign and one will be permanently deployed at East North Atlantic (ENA). ARM initially deployed impact disdrometers (TWPC1, TWPC3 and SGPC1). Each of the three units deployed was accompanied by a nearby tipping bucket. In 2010, the tipping buckets were upgraded to weighing buckets. Subsequently five video disdrometers were purchased. The purchase of the 6th video disdrometer is pending. The video disdrometers are permanently deployed at SGPC1, TWPC1, TWPC3 and in the near future at ENA. One video disdrometer is assigned to the ARM2. What follows is a detailed description of the Parsivel2 laser disdrometers and their datastreams.

  17. Formaldehyde from GOME-2

    Science.gov (United States)

    Comyn-Platt, Edward; Hewson, Will; Bösch, Hartmut; Barkley, Mike

    2014-05-01

    Isoprene is the most abundant non-methane biogenic volatile organic compound (BVOC) emitted into the atmosphere with emissions roughly equal to global methane emissions from all sources. Isoprene strongly influences the oxidation capacity in the troposphere hence influences levels of methane and tropospheric ozone, and is also a precursor to secondary organic aerosol. Isoprene, therefore, plays a significant role in radiative forcing and determining Earth's climate trends. However, the exact mechanisms of isoprene emission from vegetation are poorly understood and current land-surface models often use different parameterisation and meteorological fields to drive such schemes. Furthermore, isoprene emissions measurements are rare and are difficult to extrapolate to regional and continental scales thus resulting in large uncertainties in the total global emissions. Formaldehyde (HCHO) is formed as an intermediate product during the isoprene oxidation process and can be used as a proxy for isoprene emission. Global satellite observations of formaldehyde are now available from a number of satellite sensors which offer a unique ability to study isoprene emissions over large regions. Here, we use formaldehyde observations from the Global Ozone Monitoring Experiment 2 (GOME-2) instrument retrieved with the University of Leicester retrieval (Hewson et al. 2013) to: 1) test state-of-the-art model calculations using the GEOS-CHEM global transport model; 2) investigate the key drivers for regional year-to-year anomalies in formaldehyde (or isoprene) emissions and 3) assess the ability of current land surface models (MEGAN, JULES) to reproduce the observed anomalies and their dependence on climate variations.

  18. The DR-2 project

    DEFF Research Database (Denmark)

    Ølgaard, Povl Lebeck

    2003-01-01

    DR-2 was a 5 MW tank type, water moderated and cooled research reactor, which was operated at the Risø National Laboratory from 1959 to 1975. After the close-down in1975 the DR-2 has been kept in safe enclosure until now. The aim of the DR-2 projectreported here was to characterize the present...... state of the reactor and to determine, which radionuclides remain where in the reactor in what amounts. The first part of the reactor to be investigated was the reactor tank. The lids at the reactor top wereremoved, air samples taken and smear test made in the tank. Then the control rods, the magnet...... dosimeters. Next the hold-up tank room and the concrete cave (the igloo) in front of the thermal column wereopened. They had been used as storage rooms for various components and all movable components were removed, measured and, if active, cut into waste drums. Only large and active objects remain stored...

  19. Effects of Cd+2, Cu+2, Ba+2 and Co+2 ions on Entamoeba histolytica cysts

    Institute of Scientific and Technical Information of China (English)

    Umit Aksoy; Sebnem Ustun; Hande Dagci; Suleyman Yazar

    2004-01-01

    AIM: The effects of cobalt, copper, cadmium and barium ions on the cysts of Entamoeba histolytica (E.histolytica),an amebic dysentery agent, cultured in Robinson medium were investigated.METHODS: E. histolytica cysts and trophozoites isolated from a patient with amebiasis were cultivated in the medium,incubated at 37 ℃ for a period of 4 days and 40x104/ml amebic cysts were then transferred to a fresh medium. At the second stage, 0.05, 0.1 and 0.2 mM of selected metal ions were added to the medium, and the effects of these ions on parasitic reproduction compared with the control group were observed.RESULTS: It was determined that the number of living parasites in all the groups containing metal ions decreased significantly rtarting from 30 minutes (P<0.01). CuCl2 showed the highest lethal effect on E.histolytita cysts, whereas the lowest lethal effect was observed with CoCl2. It was also seen that the number of living cells was decreased as the ion concentration and exposure time were increased, and that there were no living paasites in the medium at the end of 24 h (P<0.01).CONCLUSION: It may be stated that the effect of everincreasing contamination of the environment with metal waste materials on parasites should be investigated further.

  20. Interleukin-2 carbohydrate recognition modulates CTLL-2 cell proliferation.

    Science.gov (United States)

    Fukushima, K; Yamashita, K

    2001-03-01

    Interleukin-2 (IL-2) specifically recognizes high-mannose type glycans with five or six mannosyl residues. To determine whether the carbohydrate recognition activity of IL-2 contributes to its physiological activity, the inhibitory effects of high-mannose type glycans on IL-2-dependent CTLL-2 cell proliferation were investigated. Man(5)GlcNAc(2)Asn added to CTLL-2 cell cultures inhibited not only phosphorylation of tyrosine kinases but also IL-2-dependent cell proliferation. We found that a complex of IL-2, IL-2 receptor alpha, beta, gamma subunits, and tyrosine kinases was formed in rhIL-2-stimulated CTLL-2 cells. Among the components of this complex, only the IL-2 receptor alpha subunit was stained with Galanthus nivalis agglutinin which specifically recognizes high-mannose type glycans. This staining was diminished after digestion of the glycans with endo-beta-N-acetylglucosaminidase H or D, suggesting that at least a N-glycan containing Man(5)GlcNAc(2) is linked to the extracellular portion of the IL-2 receptor alpha subunit. Our findings indicate that IL-2 binds the IL-2 receptor alpha subunit through Man(5)GlcNAc(2) and a specific peptide sequence on the surface of CTLL-2 cells. When IL-2 binds to the IL-2Ralpha subunit, this may trigger formation of the high affinity complex of IL-2-IL-2Ralpha, -beta, and -gamma subunits, leading to cellular signaling.

  1. Effects of Pb2+, Cd2+ and Cu2+ on the Aqueous Zn2+ Sorption by Hydroxyapatite

    Institute of Scientific and Technical Information of China (English)

    QI Yong; LIU Yu

    2006-01-01

    In this paper, the behaviors of aqueous zinc sorption by hydroxyapatite in the co-existence of Pb2+, Cd2+ and Cu2+ are investigated, the effects of Pb2+, Cd2+ and Cu2+ on the sorption of Zn2+ are discussed, and the hydroxyapatite sorption capabilities for Pb2+, Cd2+, Cu2+ and Zn2+ are compared.The experimental results show that the Zn2+ removal efficiency decreases gradually with the increase of the Cd2+ concentration of the solution, and there is no sorption preference between Cd2+ and Zn2+. On the other hand, the Zn2+ removal efficiency rapidly decreases rapidly with the increase of the Cu2+ concentration of the solution, and there is a clear sorption preference between Cu2+ and Zn2+. It is noticed that the Zn2+ removal efficiency is hardly changed with the variance of Pb2+ concentration because the removal mechanisms for these two ions are totally different. It is concluded that the adsorption affinities of the heavy metals for the hydroxyapatite follows this sequence: Pb2+> Cu2+>Cd2+> Zn2+.

  2. The DR-2 project

    Energy Technology Data Exchange (ETDEWEB)

    Oelgaard, P.L

    2003-06-01

    DR-2 was a 5 MW tank type, water moderated and cooled research reactor, which was operated at the Risoe National Laboratory from 1959 to 1975. After the close-down in1975 the DR-2 has been kept in safe enclosure until now. The aim of the DR-2 project reported here was to characterize the present state of the reactor and to determine, which radionuclides remain where in the reactor in what amounts. The first part of the reactor to be investigated was the reactor tank. The lids at the reactor top were removed, air samples taken and smear test made in the tank. Then the control rods, the magnet rods and other active components were removed from the tank, measured, cut up, and disposed of in waste drums. The beryllium reflector elements were stored in specially prepared containers. When all movable parts had been taken out, the remaining radiation field was measured by use of thermoluminescence dosimeters. Next the hold-up tank room and the concrete cave (the igloo) in front of the thermal column were opened. They had been used as storage rooms for various components and all movable components were removed, measured and, if active, cut into waste drums. Only large and active objects remain stored in the igloo and the hold-up tank room. A number of graphite stringers were taken out of the thermal column and their activity measured. It was a surprise to find, that the stringers contained significant 152Eu and 154Eu activity. Some of the beam plugs and irradiation tubes were extracted and reinserted after their activity had been measured. The activity of the radiation shield of the reactor was measured in three different ways: By drilling two cored holes through the shield, by thermo-luminescence dosimeter measurements in vertical tubes in the concrete shield and by measurements through an open beam hole. At the start of the project the activity in DR-2 was about 45-50 GBq. Now it is about 5-10 GBq. Based on the results of the DR-2 project it is believed that the reactor

  3. Chemisorption of SO2 and Cl2 on indium oxide

    International Nuclear Information System (INIS)

    The mutual influence of SO2 and Cl2 during chemisorption on In2O3 surface has been studied. It is shown that SO2 molecules are adsorbed in a non-charged form and the amount of SO2 adsorbed decreases with temperature increase. Preliminary Cl2 chemisorption results in an abrupt decrease of SO2 sorption and change in SO2 bonding with indium oxide surface. In case of SO2 presorption a decrease in temperature of chloride formation during subsequent Cl2 chemisorption takes place. 8 refs.; 3 figs.; 1 tab

  4. Antimicrobial actions of the human epididymis 2 (HE2 protein isoforms, HE2alpha, HE2beta1 and HE2beta2

    Directory of Open Access Journals (Sweden)

    French Frank S

    2004-08-01

    Full Text Available Abstract Background The HE2 gene encodes a group of isoforms with similarities to the antimicrobial beta-defensins. We demonstrated earlier that the antimicrobial activity of HE2 proteins and peptides is salt resistant and structure dependent and involves permeabilization of bacterial membranes. In this study, we further characterize the antimicrobial properties of HE2 peptides in terms of the structural changes induced in E. coli and the inhibition of macromolecular synthesis. Methods E. coli treated with 50 micro g/ml of HE2alpha, HE2beta1 or HE2beta2 peptides for 30 and 60 min were visualized using transmission and scanning electron microscopy to investigate the impact of these peptides on bacterial internal and external structure. The effects of HE2alpha, HE2beta1 and HE2beta2 on E. coli macromolecular synthesis was assayed by incubating the bacteria with 2, 10 and 25 micro g/ml of the individual peptides for 0–60 min and measuring the incorporation of the radioactive precursors [methyl-3H]thymidine, [5-3H]uridine and L-[4,5-3H(N]leucine into DNA, RNA and protein. Statistical analyses using Student's t-test were performed using Sigma Plot software. Values shown are Mean ± S.D. Results E. coli treated with HE2alpha, HE2beta1 and HE2beta2 peptides as visualized by transmission electron microscopy showed extensive damage characterized by membrane blebbing, thickening of the membrane, highly granulated cytoplasm and appearance of vacuoles in contrast to the smooth and continuous membrane structure of the untreated bacteria. Similarly, bacteria observed by scanning electron microscopy after treating with HE2alpha, HE2beta1 or HE2beta2 peptides exhibited membrane blebbing and wrinkling, leakage of cellular contents, especially at the dividing septa, and external accumulation of fibrous materials. In addition, HE2alpha, HE2beta1 and HE2beta2 peptides inhibited E. coli DNA, RNA and protein synthesis. Conclusions The morphological changes observed

  5. Actividad química de los ligandos puente difósforo y difosfenilo en los complejos binucleares (Mo2Cp2(n-PCy2) (n-K2:K2-P2)(CO)2)-y (Mo2Cp2(n-PCy2)(n-K2:K2-P2Me)(CO)2)

    OpenAIRE

    Lozano Rivera, Raquel

    2015-01-01

    El trabajo de investigación que se recoge en la presente Memoria comprende un amplio estudio de la reactividad de complejos metálicos binucleares con ligandos puente difósforo y metildifosfenilo procedentes de la activación directa del fósforo blanco. Por un lado, se ha llevado a cabo un amplio análisis del comportamiento químico de la especie aniónica [Mo2Cp2(¿-PCy2)(¿-¿2:¿2-P2)(CO)2]- frente a electrófilos de distinta naturaleza, tales como clorofosfinas y complejos metálicos generadores...

  6. ENGINEERING CONTRACT ON FY-2 BATCH 2 SATELLITES SIGNED

    Institute of Scientific and Technical Information of China (English)

    SunQing

    2004-01-01

    The signing ceremony of the Engineering Contract on FY-2 Batch 2 (FY-2 02) Satellites was held in Beijing by Commission of Science, Technology and Industry for National Defense (COSTIND) on August 31, 2004. The contract on the development and manufacture of FY-2 batch 2 satellites and the contract on the launch, test and control of FY-2 Batch 2 satellites were signed by China Meteorological Administration (CMA),

  7. Environmental program. Phase 2

    International Nuclear Information System (INIS)

    The Norwegian Oil Industry Association (OLF) has between 1991 and 1993 conducted an environmental program. The objectives were to: Enhance the knowledge of emissions to air and discharges to sea from Norwegian offshore oil and gas production operations. Evaluate the technology and the associated costs for potential reduction of continuous emissions and discharges. Phase 2 of the program has in particular focused on the relationship between the cost and benefit of emission and discharge reduction measures. The purpose has been to identify the measures giving the largest reductions per unit cost. This has now been performed and is documented in 24 technical reports. Total production of oil and gas from the Norwegian sector was 130 million tons oil equivalents (toe) in 1992, most of which was exported to markets in Europe. All this will ultimately be consumed, primarily through energy conversion processes, with release of CO2 and other greenhouse emission gases. The current gas production of 26 million toe per year will increase rapidly during the coming ten years, while the present increase in oil production is expected to culminate in the same period. Reduction of atmospheric emissions from the Norwegian oil and gas industry may be achieved primarily through energy efficiency measures. Approximately 2.5% of the fossil fuel energy is consumed in the production and transportation process. Different environmental standards between producing nations will primarily affect production cost. The competitiveness of the various producing regions, rather than the overall environmental impact of the petroleum industry and its products, will be effected. 36 refs., 61 figs., 33 tabs

  8. HYLIFE-2 progress report

    Energy Technology Data Exchange (ETDEWEB)

    Moir, R.W.; Adamson, M.G.; Bangerter, R.O.; Bieri, R.L.; Condit, R.H.; Hartman, C.W.; House, P.A.; Langdon, A.B.; Logan, B.G.; Orth, C.D.; Petzoldt, R.W.; Pitts, J.H.; Post, R.F.; Sacks, R.A.; Tobin, M.T.; Williams, W.H. (Lawrence Livermore National Lab., CA (United States)); Dolan, T.J.; Longhurst, G.R. (EG and G Idaho, Inc., Idaho Falls, ID (United States)); Hoffman, M.A. (California Univ., Davis, CA (United S

    1991-12-01

    LIFE-II inertial confinement fusion power plant design study uses a liquid fall, in the form of jets to protect the first structural wall from neutron damage, x rays, and blast to provide a 30-y lifetime. This is a progress report of an incomplete and ongoing study. HYLIFE-I used liquid lithium. HYLIFE-11 avoids the fire hazard of lithium by using a molten salt composed of fluorine, lithium, and beryllium (Li{sub 2}Be{sub 4}) called Flibe. Access for heavy-ion beams is provided. Calculations for assumed heavy-ion beam performance show a nominal gain of 70 at 5 MJ producing 350 MJ, about 5.2 times less yield than the 1.8 GJ from a driver energy of 4.5 MJ with gain of 400 for HYLIFE-I. The nominal 1 GWe of power can be maintained by increasing the repetition rate by a factor of about 5.2, from 1.5 to 8 Hz. A higher repetition rate requires faster re-establishment of the jets after a shot, which can be accomplished in part by decreasing the jet fall height and increasing the jet flow velocity. Multiple chambers may be required.In addition, although not considered for HYLIFE-I there is undoubtedly liquid splash that must be forcibly cleared because gravity is too slow, especially at high repetition rates. Splash removal can be accomplished by either pulsed or oscillating jet flows. The cost of electricity is estimated to be 0.10 $/kW{center dot} in constant 1990 dollars, about twice that of future coal and light water reactor nuclear power. The driver beam cost is about one-half the total cost.

  9. HYLIFE-2 progress report

    Energy Technology Data Exchange (ETDEWEB)

    Moir, R.W.; Adamson, M.G.; Bangerter, R.O.; Bieri, R.L.; Condit, R.H.; Hartman, C.W.; House, P.A.; Langdon, A.B.; Logan, B.G.; Orth, C.D.; Petzoldt, R.W.; Pitts, J.H.; Post, R.F.; Sacks, R.A.; Tobin, M.T.; Williams, W.H. [Lawrence Livermore National Lab., CA (United States); Dolan, T.J.; Longhurst, G.R. [EG and G Idaho, Inc., Idaho Falls, ID (United States); Hoffman, M.A. [California Univ., Davis, CA (United States). Dept. of Mechanical Engineering; Schrock, V.E.; Peterson, P.E.; Bai, R.Y.; Chen, X.M.; Liu, J.C. [California Univ., Berkeley, CA (United States). Dept. of Nuclear Engineering; Sze, D.K. [Argonne National Lab., IL (United States); Meier, W.R. [Schafer (W.J.) Associates, Inc., Pleasanton, CA (United States)

    1991-12-01

    LIFE-II inertial confinement fusion power plant design study uses a liquid fall, in the form of jets to protect the first structural wall from neutron damage, x rays, and blast to provide a 30-y lifetime. This is a progress report of an incomplete and ongoing study. HYLIFE-I used liquid lithium. HYLIFE-11 avoids the fire hazard of lithium by using a molten salt composed of fluorine, lithium, and beryllium (Li{sub 2}Be{sub 4}) called Flibe. Access for heavy-ion beams is provided. Calculations for assumed heavy-ion beam performance show a nominal gain of 70 at 5 MJ producing 350 MJ, about 5.2 times less yield than the 1.8 GJ from a driver energy of 4.5 MJ with gain of 400 for HYLIFE-I. The nominal 1 GWe of power can be maintained by increasing the repetition rate by a factor of about 5.2, from 1.5 to 8 Hz. A higher repetition rate requires faster re-establishment of the jets after a shot, which can be accomplished in part by decreasing the jet fall height and increasing the jet flow velocity. Multiple chambers may be required.In addition, although not considered for HYLIFE-I there is undoubtedly liquid splash that must be forcibly cleared because gravity is too slow, especially at high repetition rates. Splash removal can be accomplished by either pulsed or oscillating jet flows. The cost of electricity is estimated to be 0.10 $/kW{center_dot} in constant 1990 dollars, about twice that of future coal and light water reactor nuclear power. The driver beam cost is about one-half the total cost.

  10. HYLIFE-2 progress report

    International Nuclear Information System (INIS)

    LIFE-II inertial confinement fusion power plant design study uses a liquid fall, in the form of jets to protect the first structural wall from neutron damage, x rays, and blast to provide a 30-y lifetime. This is a progress report of an incomplete and ongoing study. HYLIFE-I used liquid lithium. HYLIFE-11 avoids the fire hazard of lithium by using a molten salt composed of fluorine, lithium, and beryllium (Li2Be4) called Flibe. Access for heavy-ion beams is provided. Calculations for assumed heavy-ion beam performance show a nominal gain of 70 at 5 MJ producing 350 MJ, about 5.2 times less yield than the 1.8 GJ from a driver energy of 4.5 MJ with gain of 400 for HYLIFE-I. The nominal 1 GWe of power can be maintained by increasing the repetition rate by a factor of about 5.2, from 1.5 to 8 Hz. A higher repetition rate requires faster re-establishment of the jets after a shot, which can be accomplished in part by decreasing the jet fall height and increasing the jet flow velocity. Multiple chambers may be required.In addition, although not considered for HYLIFE-I there is undoubtedly liquid splash that must be forcibly cleared because gravity is too slow, especially at high repetition rates. Splash removal can be accomplished by either pulsed or oscillating jet flows. The cost of electricity is estimated to be 0.10 $/kW· in constant 1990 dollars, about twice that of future coal and light water reactor nuclear power. The driver beam cost is about one-half the total cost

  11. Synthesis and crystal structures of new complexes of Np(V) glycolate with 2,2'-bipyridine, [NpO2(C10H8N2)(OOC2H2OH)].1.5H2O and [NpO2(C10H8N2)(OOC2H2OH)].2.5H2O

    International Nuclear Information System (INIS)

    Single crystals were prepared, and the structures of two complexes of Np(V) glycolate with 2,2'-bipyridine of the compositions [NpO2(C10H8N2)(OOC2H2OH)].1.5H2O (I) and [NpO2(C10H8N2)(OOC2H2OH)]2.5H2O (II) were studied. The structures of the compounds are based on neptunyl-glycolate chains in which the glycolate anion manifests its complexation ability in different manner. In structure I, the bidentate-bridging anion links the adjacent NpO2- cations through the oxygen atoms of the carboxylate group. The neptunyl-glycolate chains of I exhibits the mutual coordination of the NpO2- cations acting toward each other simultaneously as ligands and coordinating centers. In compound II, the glycolate anion is bidentately coordinated to one neptunium atom to form a planar five-membered metallocycle [NpOCCO]. The O atom external with respect to the metallocycle is in the coordination environment of the adjacent neptunyl. The nitrogen-containing molecular ligand Bipy is included into the coordination environment of Np. The coordination polyhedron of the Np atoms in both structures is a pentagonal bipyramid in which the average Np-N bond length is 2.666 Aa (I) and 2.596 Aa (II). (orig.)

  12. OPEN SEASON 2

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    如果你捧着爆米花(popcorn)去看电影,那最好不要选择这部电影,因为你会捧腹大笑得把爆米花洒一地;如果你边喝水边看电影,那也最好小心点,因为这部电影绝对会让你笑得喷水。是什么样的电影?那就是Open Season2!

  13. Electronics 2 checkbook

    CERN Document Server

    Knight, S A

    2013-01-01

    Electronics 2 Checkbook is an 11-chapter text that presents problems and worked examples to establish and exemplify the theory contained in technical syllabuses, with a particular emphasis on electronics.The introductory chapters review the elementary theory of semiconductors and the p-n junction diode. The subsequent chapters deal with the applications of diode, the characteristics of bipolar transistors, and the mode of operation of small signal amplifiers. These topics are followed by discussions of the function of the field-effect transistor and power supplies. The concluding chapters expl

  14. 2-(3-Nitrophenoxyquinoxaline

    Directory of Open Access Journals (Sweden)

    Noor Doha Hassan

    2010-09-01

    Full Text Available In the title molecule, C14H9N3O3, the dihedral angle between the quinoxaline and benzene rings is 77.13 (9°. The molecule is twisted about the ether–benzene O—C bond, with a C—O—C—C torsion angle of −102.8 (2°. In the crystal, molecules are linked by C—H...O hydrogen bonds, forming layers in the ab plane, with one nitro O atom accepting two such interactions. The layers stack along the c-axis direction via weak C—H...π interactions.

  15. Excited states 2

    CERN Document Server

    Lim, Edward C

    2013-01-01

    Excited States, Volume 2 is a collection of papers that deals with molecules in the excited states. The book describes the geometries of molecules in the excited electronic states. One paper describes the geometries of a diatomic molecule and of polyatomic molecules; it also discusses the determination of the many excited state geometries of molecules with two, three, or four atoms by techniques similar to diatomic spectroscopy. Another paper introduces an ordered theory related to excitons in pure and mixed molecular crystals. This paper also presents some experimental data such as those invo

  16. Search for $2\

    CERN Document Server

    :,; Auty, D J; Barbeau, P S; Beck, D; Belov, V; Breidenbach, M; Brunner, T; Burenkov, A; Cao, G F; Chambers, C; Chaves, J; Cleveland, B; Coon, M; Craycraft, A; Daniels, T; Danilov, M; Daugherty, S J; Davis, J; Delaquis, S; Der Mesrobian-Kabakian, A; DeVoe, R; Didberidze, T; Dilling, J; Dolgolenko, A; Dolinski, M J; Dunford, M; Fairbank, W; Farine, J; Feldmeier, W; Feyzbakhsh, S; Fierlinger, P; Fudenberg, D; Gornea, R; Graham, K; Gratta, G; Hall, C; Hughes, M; Jewell, M J; Johnson, A; Johnson, T N; Johnston, S; Karelin, A; Kaufman, L J; Killick, R; King, J; Koffas, T; Kravitz, S; Krücken, R; Kuchenkov, A; Kumar, K S; Leonard, D S; Licciardi, C; Lin, Y H; Ling, J; MacLellan, R; Marino, M G; Mong, B; Moore, D; Njoya, O; Nelson, R; Odian, A; Ostrovskiy, I; Piepke, A; Pocar, A; Prescott, C Y; Retière, F; Rowson, P C; Russell, J J; Schubert, A; Sinclair, D; Smith, E; Stekhanov, V; Tarka, M; Tolba, T; Tsang, R; Twelker, K; Vogel, P; Vuilleumier, J -L; Waite, A; Walton, J; Walton, T; Weber, M; Wen, L J; Wichoski, U; Winick, T A; Wood, J; Xu, Q Y; Yang, L; Yen, Y -R; Zeldovich, O Ya

    2015-01-01

    EXO-200 is a single phase liquid xenon detector designed to search for neutrinoless double-beta decay of $^{136}$Xe to the ground state of $^{136}$Ba. We report here on a search for the two-neutrino double-beta decay of $^{136}$Xe to the first $0^+$ excited state, $0^+_1$, of $^{136}$Ba based on a 100 kg$\\cdot$yr exposure of $^{136}$Xe. Using a specialized analysis employing a machine learning algorithm, we obtain a 90% CL half-life sensitivity of $1.7 \\times 10^{24}$ yr. We find no statistically significant evidence for the $2\

  17. At UA2

    CERN Multimedia

    1980-01-01

    Working on one of the 24 sectors of the e.m. and hadronic calorimeter. The UA2 central calorimeter extended over a region of polar angles from 40° to 140° (wrt beam axis) each sector covering an azimuth interval of 15°. Starting from its inner part, a sector contained trapezoidal e.m. (lead/scintillator) and hadronic (iron/scintillator) detection elements. The light collected through wave-shifter plates was brought to PMs on the outer surface (centre of the photo).

  18. Banff Challenge 2

    CERN Document Server

    Junk, Thomas R

    2011-01-01

    Experimental particle physics collaborations constantly seek newer and better ideas for improving the sensitivity of their searches for new particles and phenomena. Statistical techniques are the last step in interpreting the results of an experiment; they are used to make discoveries (hypothesis testing), and to measure parameters (point estimation). They are also used in the first step - experiment and analysis design. Banff Challenge 2 asks participants to test their methods of disco vering hidden signals in simulated datasets and of measuring the properties of these signals. The Challenge problems are described, and the performances of the submitted entries is summarized, for datasets with and without simulated signals present.

  19. IM2CAD

    OpenAIRE

    Izadinia, Hamid; Shan, Qi; Seitz, Steven M.

    2016-01-01

    Given a single photo of a room and a large database of furniture CAD models, our goal is to reconstruct a scene that is as similar as possible to the scene depicted in the photograph, and composed of objects drawn from the database. We present a completely automatic system to address this IM2CAD problem that produces high quality results on challenging imagery from real estate web sites. Our approach iteratively optimizes the placement and scale of objects in the room to best match scene rend...

  20. Zend framework 2 cookbook

    CERN Document Server

    Callaars, Josephus

    2013-01-01

    This book is written in a practical, cookbook style with numerous examples and recipes. This style allows you to go both directly to your topic of interest or follow topics throughout a chapter to gain an in-depth knowledge of certain areas.'Zend Framework 2 Cookbook"" is for PHP developers who are fairly advanced in programming in PHP. It will also be useful for developers who have a keen interest in expanding their knowledge outside the boundaries of simply scripting pages together. As unit testing and MVC will be discussed, it is beneficial for the reader to know what these technologies are

  1. Electrical applications 2

    CERN Document Server

    Tyler, David W

    1998-01-01

    Electrical Applications 2 covers the BTEC NII level objectives in Electrical Applications U86/330. To understand the applications, a knowledge of the underlying principles is needed and these are covered briefly in the text. Key topics discussed are: the transmission and distribution of electrical energy; safety and regulations; tariffs and power factor correction; materials and their applications in the electrical industry; transformers; DC machines; illumination; and fuse protection. Included in each chapter are worked examples which should be carefully worked through before progressing to t

  2. The irradiation effects of Gd2Hf2O7 and Gd2Ti2O7

    Science.gov (United States)

    Li, Y. H.; Wen, J.; Wang, Y. Q.; Wang, Z. G.; Tang, M.; Valdez, J. A.; Sickafus, K. E.

    2012-09-01

    In this report, we present dramatically different behavior between isostructural Gd2Hf2O7 and Gd2Ti2O7 pyrochlore using 400 keV Ne2+ irradiation under cryogenic conditions (˜77 K), in which the lattice volume of the irradiated layer of Gd2Ti2O7 increased with ion fluence up to 1 × 1015 ions/cm2, whereas, the lattice volume of the irradiated layer of Gd2Hf2O7 decreased with increasing fluence from 1 × 1015 to 6 × 1016 ions/cm2. The cation radius ratio rA/rB, the bond-type of A-O and B-O bonds, the order-to-disorder transition energy of Gd2Hf2O7 and Gd2Ti2O7, temperature-composition (T-C) phase diagrams of HfO2-Gd2O3 and TiO2-Gd2O3 mixtures were used to explain the response of Gd2Hf2O7 and Gd2Ti2O7 to ion irradiation-induced structure transformation.

  3. Structures of nitrato-(2-hydroxybenzaldehydo) (2,2′-bipyridyl)copper and nitrato-(2-hydroxy-5-nitrobenzaldehydo)(2,2′-bipyridyl)copper

    International Nuclear Information System (INIS)

    Nitrato-(2-hydroxy-5-nitrobenzaldehydo)(2,2′-bipyridyl)copper (I) and nitrato-(2-hydroxybenzaldehydo)(2,2′-bipyridyl)copper (II) were synthesized and characterized by X-ray diffraction. The coordination polyhedron of the central copper atom in complex I can be described as a distorted tetragonal pyramid whose base is formed by the phenol and carbonyl oxygen atoms of the monodeprotonated 2-hydroxy-5nitrobenzaldehyde molecule and the nitrogen atoms of the 2,2′-bipyridyl ligand and whose apex is occupied by the oxygen atom of the nitrato group. In the crystal structure, complexes I are linked by the acido ligands and the NO2 groups of the aldehyde molecule into infinite chains. In complex II, the central copper atom is coordinated by 2-hydroxybenzaldehyde, 2,2′-bipyridyl, and the nitrato group, resulting in the formation of centrosymmetric dimers. The coordination polyhedron of the central copper atom can be described as a bipyramid (4 + 1 + 1) with the same base as in complex I. The axial vertices of the bipyramid are occupied by the oxygen atom of the nitrato group and the bridging phenol oxygen atom of the adjacent complex related to the initial complex by a center of symmetry. In the crystal structure, complexes II are hydrogen bonded into infinite chains.

  4. Preparation and Photo-thermal Isomerization of Azo [2.2.1]-and Azo[2.2.3]metacyclophane Tweezers

    OpenAIRE

    Sawada, Tsuyoshi; Thiemann, Thies; Mataka, Shuntaro

    1999-01-01

    Azo[2.2.1]metacyclophane (MCP) tweezer 11 and azo[2.2.3]MCP tweezer 12 were prepared from [2.2.1]MCP 1a and [2.2.3]MCP 8, respectively, by ipso-nitration followed by reductive coupling using LiAlH_4. The photochemical and thermal isomerization of azo[2.2.n]MCP tweezers were studied by UV spectroscopy. The activation parameter (E_a) of the thermal cis-trans isomerization of 11 and 12 was determined as 81.7 kJmol^ and 90.9 kJmol^, respectively.

  5. Mastering JavaServer Faces 2.2

    CERN Document Server

    Leonard, Anghel

    2014-01-01

    A homogenous guide integrating the features of JSF 2.x (2.0, 2.1 and 2.2), following a "learning through examples" paradigm with its main focus on the advanced concepts of JSF. If you are a web developer who uses JSF, this is the book for you. Catering to an intermediate-advanced audience, the book assumes you have fundamental knowledge of JSF. It is intended for the developer who wants to improve their skills with the combined power of JSF 2.0, 2.1, and 2.2.

  6. UPVG phase 2 report

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1995-08-01

    The Utility PhotoVoltaic Group (UPVG), supported by member dues and a grant from the US Department of Energy, has as its mission the acceleration of the use of cost-effective small-scale and emerging large-scale applications of photovoltaics for the benefit of electric utilities and their customers. Formed in October, 1992, with the support of the American Public Power Association, Edison Electric Institute, and the National Rural Electric Cooperative Association, the UPVG currently has 90 members from all sectors of the electric utility industry. The UPVG`s efforts as conceived were divided into four phases: Phase 0--program plan; Phase 1--organization and strategy development; Phase 2--creating market assurance; and Phase 3--higher volume purchases. The Phase 0 effort developed the program plan and was completed early in 1993. The Phase 1 goal was to develop the necessary background information and analysis to lead to a decision as to which strategies could be undertaken by utilities to promote greater understanding of PV markets and achieve increased volumes of PV purchases. This report provides the details of the UPVG`s Phase 2 efforts to initiate TEAM-UP, its multiyear, 50-MW hardware initiative.

  7. CPLOAS_2 user manual

    Energy Technology Data Exchange (ETDEWEB)

    Sallaberry, Cedric Jean-Marie. [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Helton, Jon Craig [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

    2012-10-01

    Weak link (WL)/strong link (SL) systems are important parts of the overall operational design of high-consequence systems. In such designs, the SL system is very robust and is intended to permit operation of the entire system under, and only under, intended conditions. In contrast, the WL system is intended to fail in a predictable and irreversible manner under accident conditions and render the entire system inoperable before an accidental operation of the SL system. The likelihood that the WL system will fail to deactivate the entire system before the SL system fails (i.e., degrades into a configuration that could allow an accidental operation of the entire system) is referred to as probability of loss of assured safety (PLOAS). This report describes the Fortran 90 program CPLOAS_2 that implements the following representations for PLOAS for situations in which both link physical properties and link failure properties are time-dependent: (i) failure of all SLs before failure of any WL, (ii) failure of any SL before failure of any WL, (iii) failure of all SLs before failure of all WLs, and (iv) failure of any SL before failure of all WLs. The effects of aleatory uncertainty and epistemic uncertainty in the definition and numerical evaluation of PLOAS can be included in the calculations performed by CPLOAS_2.

  8. COSMICFLOWS-2: THE DATA

    Energy Technology Data Exchange (ETDEWEB)

    Tully, R. Brent; Courtois, Hélène M.; Jacobs, Bradley A.; Wu, Po-Feng [Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, HI 96822 (United States); Dolphin, Andrew E. [Raytheon Company, 1151 E Hermans Rd., Tucson, AZ 85756 (United States); Fisher, J. Richard [National Radio Astronomy Observatory, 520 Edgemont Road, Charlottesville, VA 22903 (United States); Héraudeau, Philippe [Argelander-Institut für Astronomie, Auf dem Hügel 71, D-53121 Bonn (Germany); Karachentsev, Igor D.; Makarov, Dmitry; Makarova, Lidia; Mitronova, Sofia [Special Astrophysical Observatory, N Arkhyz, KChR 369167 (Russian Federation); Rizzi, Luca [W. M. Keck Observatory, 65-1120 Mamalahoa Highway, Waimea, HI 96743 (United States); Shaya, Edward J. [Department of Astronomy, University of Maryland, College Park, MD 20742 (United States); Sorce, Jenny G. [Université Claude Bernard Lyon I, Institut de Physique Nucleaire, F-69622 Lyon (France)

    2013-10-01

    Cosmicflows-2 is a compilation of distances and peculiar velocities for over 8000 galaxies. Numerically the largest contributions come from the luminosity-line width correlation for spirals, the Tully-Fisher relation (TFR), and the related fundamental plane relation for E/S0 systems, but over 1000 distances are contributed by methods that provide more accurate individual distances: Cepheid, tip of the red giant branch (TRGB), surface brightness fluctuation, Type Ia supernova, and several miscellaneous but accurate procedures. Our collaboration is making important contributions to two of these inputs: TRGB and TFR. A large body of new distance material is presented. In addition, an effort is made to ensure that all the contributions, both our own and those from the literature, are on the same scale. Overall, the distances are found to be compatible with a Hubble constant H {sub 0} = 74.4 ± 3.0 km s{sup –1} Mpc{sup –1}. The great interest going forward with this data set will be with velocity field studies. Cosmicflows-2 is characterized by a great density and high accuracy of distance measures locally, falling to sparse and coarse sampling extending to z = 0.1.

  9. Microcosm 2.011

    CERN Multimedia

    CERN Bulletin

    2011-01-01

    Microcosm, CERN's first exhibition centre, will soon be upgraded. While keeping its present character and many of its nice features, the use of new cutting-edge exhibition technologies together with an area for student experiments and physics demonstrations will make version 2.011 even more attractive to the general public and school classes.   Layout of the new Microcosm 2.011 exhibition. New Year, and a new look for Microcosm! CERN's popular exhibition centre will undergo a transformation that will see, among other things, the installation of a new area dedicated to modern physics experiments for school groups. “Microcosm will keep its main features and character,” says Rolf Landua, Head of the Education Group, which is in charge of the project. “While some parts will be replaced by more modern exhibition technologies and contemporary scenography, others will be moved to allow a better visitor flow and make room for the brand-new school lab and public demonstration...

  10. Cosmicflows-2: The Data

    CERN Document Server

    Tully, R Brent; Dolphin, Andrew E; Fisher, J Richard; Heraudeau, Philippe; Jacobs, Bradley A; Karachentsev, Igor D; Makarov, Dmitry; Makarova, Lidia; Mitronova, Sofia; Rizzi, Luca; Shaya, Edward J; Sorce, Jenny G; Wu, Po-Feng

    2013-01-01

    Cosmicflows-2 is a compilation of distances and peculiar velocities for over 8000 galaxies. Numerically the largest contributions come from the luminosity-linewidth correlation for spirals, the TFR, and the related Fundamental Plane relation for E/S0 systems, but over 1000 distances are contributed by methods that provide more accurate individual distances: Cepheid, Tip of the Red Giant Branch, Surface Brightness Fluctuation, SNIa, and several miscellaneous but accurate procedures. Our collaboration is making important contributions to two of these inputs: Tip of the Red Giant Branch and TFR. A large body of new distance material is presented. In addition, an effort is made to assure that all the contributions, our own and those from the literature, are on the same scale. Overall, the distances are found to be compatible with a Hubble Constant H_0 = 74.4 +-3.0 km/s/Mpc. The great interest going forward with this data set will be with velocity field studies. Cosmicflows-2 is characterized by a great density an...

  11. ALPHA-2: the sequel

    CERN Multimedia

    Katarina Anthony

    2012-01-01

    While many experiments are methodically planning for intense works over the long shutdown, there is one experiment that is already working at full steam: ALPHA-2. Its final components arrived last month and will completely replace the previous ALPHA set-up. Unlike its predecessor, this next generation experiment has been specifically designed to measure the properties of antimatter.   The ALPHA team lower the new superconducting solenoid magnet into place. The ALPHA collaboration is working at full speed to complete the ALPHA-2 set-up for mid-November – this will give them a few weeks of running before the AD shutdown on 17 December. “We really want to get some experience with this device this year so that, if we need to make any changes, we will have time during the long shutdown in which to make them,” says Jeffrey Hangst, ALPHA spokesperson. “Rather than starting the 2014 run in the commissioning stage, we will be up and running from the get go.&...

  12. UPVG phase 2 report

    International Nuclear Information System (INIS)

    The Utility PhotoVoltaic Group (UPVG), supported by member dues and a grant from the US Department of Energy, has as its mission the acceleration of the use of cost-effective small-scale and emerging large-scale applications of photovoltaics for the benefit of electric utilities and their customers. Formed in October, 1992, with the support of the American Public Power Association, Edison Electric Institute, and the National Rural Electric Cooperative Association, the UPVG currently has 90 members from all sectors of the electric utility industry. The UPVG's efforts as conceived were divided into four phases: Phase 0--program plan; Phase 1--organization and strategy development; Phase 2--creating market assurance; and Phase 3--higher volume purchases. The Phase 0 effort developed the program plan and was completed early in 1993. The Phase 1 goal was to develop the necessary background information and analysis to lead to a decision as to which strategies could be undertaken by utilities to promote greater understanding of PV markets and achieve increased volumes of PV purchases. This report provides the details of the UPVG's Phase 2 efforts to initiate TEAM-UP, its multiyear, 50-MW hardware initiative

  13. Unobscured Type 2 AGNs

    CERN Document Server

    Shi, Yong; Smith, Paul; Rigby, Jane; Hines, Dean; Donley, Jennifer; Schmidt, Gary; Diamond-Stanic, Aleksandar M; 10.1088/0004-637X/714/1/115

    2010-01-01

    Type 2 AGNs with intrinsically weak broad emission lines (BELs) would be exceptions to the unified model. After examining a number of proposed candidates critically, we find that the sample is contaminated significantly by objects with BELs of strengths indicating that they actually contain intermediate-type AGNs, plus a few Compton-thick sources as revealed by extremely low ratios of X-ray to nuclear IR luminosities. We develop quantitative metrics that show two (NGC 3147 and NGC 4594) of the remaining candidates to have BELs 2-3 orders of magnitude weaker than those of typical type-1 AGNs. Several more galaxies remain as candidates to have anomalously weak BELs, but this status cannot be confirmed with the existing information. Although the parent sample is poorly defined, the two confirmed objects are well under 1% of its total number of members, showing that the absence of a BEL is possible, but very uncommon in AGN. We evaluate these two objects in detail using multi-wavelength measurements. They have li...

  14. DAFNE and KLOE-2

    CERN Document Server

    De Santis, A

    2015-01-01

    The DAFNE collider, located in the Frascati National Laboratories of INFN, has two main rings, where electrons and positrons are stored to collide at a center of mass energy of 1.02 GeV, the phi resonance mass. KLOE-2 experiment is located at the collider interaction region. The detector is capable to observe and collect data coming from phi decay: charged and neutral kaon pairs, lighter unflavored mesons (eta, eta', f0, a0, omega/rho). In the first half of 2013 the KLOE detector has been upgraded inserting new detector layers in the inner part of the apparatus, around the interaction region in order to improve detector hermeticity and acceptance. The long shutdown has been used to undertake a general consolidation program aimed at improving the DAFNE performances. This contribution presents the phi-factory setup and the achieved performances in terms of beam currents, luminosity and related aspects together with the KLOE-2 physics program, upgrade status report and recent physics results.

  15. Diaqua-2κ2O-bis(μ-1-oxido-2-naphthoato-1:2κ3O1,O2:O2′;2:3κ3O2:O1,O2′-bis(1-oxido-2-naphthoato-1κ1O2,O2;3κ2O1,O2-hexapyridine-1κ2N,2κ2N,3κ2N-trimanganese(II/III pyridine disolvate dihydrate

    Directory of Open Access Journals (Sweden)

    Daqi Wang

    2008-12-01

    Full Text Available The title complex, [Mn3(C11H6O34(C5H5N6(H2O22H22C5H5N, is a trinuclear mixed oxidation state complex of overline1 symmetry. The three Mn atoms are six-coordinated in the shape of distorted octahedra, each coordinated with an O4N2 set of donor atoms, where the ligands exhibit mono- and bidentate modes. However, the coordination of the MnII ion located on the inversion centre involves water molecules at two coordination sites, whereas that of the two symmetry-related MnIII ions involves an O4N2 set of donor atoms orginating from the organic ligands. Intramolecular C—H...π interactions between neighbouring pyridine ligands stabilize this arrangement. A two-dimensional network parallel to (001 is formed by intermolecular O—H...O hydrogen bonds.

  16. [2,2-Bis(diphenylphosphanylpropane-κ2P,P′]tetracarbonylchromium(0 dichloromethane monosolvate

    Directory of Open Access Journals (Sweden)

    Normen Peulecke

    2010-11-01

    Full Text Available The title compound, [Cr(C27H26P2(CO4]·CH2Cl2, was obtained by the reaction of Ph2PCMe2PPh2 with Cr(CO6 in refluxing toluene by substitution of two carbonyl ligands. The CrC4P2 coordination geometry at the Cr atom is distorted octahedral, with a P—Cr—P bite angle of 70.27 (2°.

  17. Felodipine-diazabicyclo 2.2.2 octane-water (1/1/1)

    DEFF Research Database (Denmark)

    Solanko, K. A.; Surov, A. O.; Perlovich, G. L.;

    2012-01-01

    The title compound, C18H19Cl2NO4 center dot C6H12N2 center dot H2O, is a cocrystal hydrate containing the active pharmaceutical ingredient felodipine and diazabicyclo[2.2.2]octane (DABCO). The DABCO and water molecules are linked through O-H center dot center dot center dot N hydrogen bonds into...

  18. D2.2.2 Final Version of the LinkedUp Evaluation Framework

    NARCIS (Netherlands)

    Drachsler, Hendrik; Stoyanov, Slavi; Guy, Marieke; Scheffel, Maren

    2014-01-01

    This document (D2.2.2) describes the LinkedUp consortium’s experience in developing and on- going improvement of the LinkedUp Evaluation Framework throughout three web open educational data competitions: Veni, Vidi, Vici. D2.2.2 is the final report regarding the Evaluation Framework (EF). It synthes

  19. The reaction of H2O2 with NO2 and NO

    Science.gov (United States)

    Gray, D.; Lissi, E.; Heicklen, J.

    1972-01-01

    The reactions of NO and NO2 with H2O2 have been examined at 25 C. Reaction mixtures were monitored by continuously bleeding through a pinhole into a monopole mass spectrometer. NO2 was also monitored by its optical absorption in the visible part of the spectrum. Reaction mixtures containing initially 1.5 - 2.5 torr of NO2 and 0.8 - 1.4 torr of H2O2 or 1 - 12 torr of NO and 0.5 - 1.5 torr of H2O2 were studied. The H2O2 - NO reaction was complex. There was an induction period followed by a marked acceleration in reactant removal. The final products of the reaction, NO2, probably H2O, and possibly HONO2 were produced mainly after all the H2O2 was removed. The HONO intermediate was shown to disproportionate to NO2 + NO + H2O in a relatively slow first order reaction. The acceleration in H2O2 removal after the NO - H2O2 reaction is started is caused by NO2 catalysis.

  20. Study of UO2F2 - H2O - HF compounds

    International Nuclear Information System (INIS)

    We study various compounds resulting from the interaction of UO2F2 with H2O and HF (gas), and various triple compounds UO2F2 - H2O - HF; the conditions of decomposition and the thermodynamic limits of stability are specified. (author)

  1. Crystal Structure, Electronic Structure, and Photocatalytic Activity of Oxysulfides: La2Ta2ZrS2O8, La2Ta2TiS2O8, and La2Nb2TiS2O8.

    Science.gov (United States)

    Goto, Yosuke; Seo, Jeongsuk; Kumamoto, Kazunori; Hisatomi, Takashi; Mizuguchi, Yoshikazu; Kamihara, Yoichi; Katayama, Masao; Minegishi, Tsutomu; Domen, Kazunari

    2016-04-01

    The novel oxysulfides La2Ta2ZrS2O8 (LTZSO), La2Ta2TiS2O8 (LTTSO), and La2Nb2TiS2O8 (LNTSO) were synthesized, and their crystal structures, electronic structures, and photocatalytic activities for water splitting under visible light were investigated. Density functional theory calculations showed that these compounds are direct-band-gap semiconductors. Close to the conduction band minimum, the main contribution to the band structure comes from the d orbitals of Zr or Ti ions, while the region near the valence band maximum is associated with the 3p orbitals of S ions. The absorption-edge wavelength was determined to be 540 nm for LTZSO and 700 nm for LTTSO and LNTSO. An analysis of the crystal structure using synchrotron X-ray diffraction revealed that these compounds contained antisite defects at transition metal ion sites, and these were considered to be the origin of the broad absorption at wavelengths longer than that corresponding to band-gap excitation. LTZSO was revealed to be active in the oxygen evolution reaction from aqueous solution containing a sacrificial electron acceptor under visible-light illumination. This result was supported by the band alignment and flat-band potential determined by photoelectron spectroscopy and Mott-Schottky plots.

  2. Antimicrobial, antioxidant, cytotoxic and molecular docking properties of N-benzyl-2,2,2-trifluoroacetamide

    Science.gov (United States)

    Balachandran, C.; Kumar, P. Saravana; Arun, Y.; Duraipandiyan, V.; Sundaram, R. Lakshmi; Vijayakumar, A.; Balakrishna, K.; Ignacimuthu, S.; Al-Dhabi, N. A.; Perumal, P. T.

    2015-02-01

    N-Benzyl-2,2,2-trifluoroacetamide was obtained by acylation of benzylamine with trifluoroacetic anhydride using Friedel-Crafts acylation method. The synthesised compound was confirmed by spectroscopic and crystallographic techniques. N-Benzyl-2,2,2 -trifluoroacetamide was assessed for its antimicrobial, antioxidant, cytotoxic and molecular docking properties. It showed good antifungal activity against tested fungi and moderate antibacterial activity. The minimum inhibitory concentration values of N-benzyl-2,2,2 -trifluoroacetamide against fungi were 15.62 μg/mL against A. flavus, 31.25 μg/mL against B. Cinerea and 62.5 μg/mL against T. mentagrophytes, Scopulariopsis sp., C. albicans and M. pachydermatis. N-Benzyl-2,2,2-trifluoroacetamide showed 78.97 ± 2.24 of antioxidant activity at 1,000 μg/mL. Cupric ion reducing antioxidant capacity of N-benzyl-2,2,2-trifluoroacetamide was dependent on the concentration. Ferric reducing antioxidant power assay of N-benzyl-2,2,2-trifluoroacetamide showed (1.352 ± 0.04 mM Fe(II)/g) twofold higher value compared to the standard. N-Benzyl-2,2,2-trifluoroacetamide showed 75.3 % cytotoxic activity at the dose of 200 μg/mL with IC50 (54.7 %) value of 100 μg/mL. N-Benzyl-2,2,2-trifluoroacetamide was subjected to molecular docking studies for the inhibition AmpC beta-lactamase, Glucosamine-6-Phosphate Synthase and lanosterol 14 alpha-demethylase (CYP51) enzymes which are targets for antibacterial and antifungal drugs. Docking studies of N-benzyl-2,2,2-trifluoroacetamide showed low docking energy. N-Benzyl-2,2,2-trifluoroacetamide can be evaluated further for drug development.

  3. Removal of Heavy Metals Pb2+, Cu2+, Zn2+, Cd2+, Ni2+, Co2+ and Fe3+ from Aqueous Solutions by using Xanthium Pensylvanicum

    Directory of Open Access Journals (Sweden)

    Jaber SALEHZADEH

    2013-11-01

    Full Text Available The hazardous ill effects of heavy metals on the environment and public health is a matter of serious concern. Biosorption is emerging as a sustainable effective technology. Heavy metals in water resources are one of the most important environmental problems of countries. The intensification of industrial activity and environmental stress greatly contributes to the significant rise of heavy metal pollution in water resources making threats on terrestrial and aquatic life. The toxicity of metal pollution is slow and interminable, as these metal ions are non bio-degradable. The adsorption capacity of Xanthium Pensylvanicum towards metal ions such as Pb2+, Cu2+, Zn2+, Cd2+, Ni2+, Co2+ and Fe3+, was studied. The adsorption capacity was performed by batch experiments as a function of process parameters (such as sorption time and pH. Experimental results showed that the removal percentages increasing of metal ions at pH=4, initial concentration of metal ions 10 mg/L, and after 90 min of shaking was: Zn2+ < Cd2+ < Cu2+ < Pb2+ < Ni2+ < Fe3+ < Co2+.

  4. BR2 Reactor: Introduction

    International Nuclear Information System (INIS)

    The irradiations in the BR2 reactor are in collaboration with or at the request of third parties such as the European Commission, the IAEA, research centres and utilities, reactor vendors or fuel manufacturers. The reactor also contributes significantly to the production of radioisotopes for medical and industrial applications, to neutron silicon doping for the semiconductor industry and to scientific irradiations for universities. Along the ongoing programmes on fuel and materials development, several new irradiation devices are in use or in design. Amongst others a loop providing enhanced cooling for novel materials testing reactor fuel, a device for high temperature gas cooled fuel as well as a rig for the irradiation of metallurgical samples in a Pb-Bi environment. A full scale 3-D heterogeneous model of BR2 is available. The model describes the real hyperbolic arrangement of the reactor and includes the detailed 3-D space dependent distribution of the isotopic fuel depletion in the fuel elements. The model is validated on the reactivity measurements of several tens of BR2 operation cycles. The accurate calculations of the axial and radial distributions of the poisoning of the beryllium matrix by 3He, 6Li and 3T are verified on the measured reactivity losses used to predict the reactivity behavior for the coming decades. The model calculates the main functionals in reactor physics like: conventional thermal and equivalent fission neutron fluxes, number of displacements per atom, fission rate, thermal power characteristics as heat flux and linear power density, neutron/gamma heating, determination of the fission energy deposited in fuel plates/rods, neutron multiplication factor and fuel burn-up. For each reactor irradiation project, a detailed geometry model of the experimental device and of its neighborhood is developed. Neutron fluxes are predicted within approximately 10 percent in comparison with the dosimetry measurements. Fission rate, heat flux and

  5. Methyl (Z-2-[(2,4-dioxothiazolidin-3-ylmethyl]-3-(2-methylphenylprop-2-enoate

    Directory of Open Access Journals (Sweden)

    S. Vijayakumar

    2012-01-01

    Full Text Available The C=C bond in the title compound, C15H15NO4S, has a Z configuration. The thiazolidine ring is essentially planar [maximum deviation = 0.008 (1 Å for the N atom] and is oriented at a dihedral angle of 59.1 (1° with respect to the benzene ring. In the crystal, pairs of C—H...O hydrogen bonds link centrosymmetrically related molecules into dimers, generating R22(18 ring motifs. The crystal packing is further stabilized by C—H...π and C—O...π [O...centroid = 3.412 (2 Å and C—O...centroid = 115.0 (1°] interactions.

  6. 2-[((E-2-{2-[(E-2-Hydroxybenzylidene]hydrazinecarbonyl}hydrazinylidenemethyl]phenol

    Directory of Open Access Journals (Sweden)

    Rahman Bikas

    2012-01-01

    Full Text Available The molecule of the title compound, C15H14N4O3, is completed by the application of crystallographic twofold symmetry, with the carbonyl group lying on the rotation axis. The molecule is close to planar: the greatest deviation of a torsion angle from 0° is 7.3 (2° about the bond linking the phenol ring to the rest of the molecule. An intramolecular O—H...N(imine hydrogen bond is formed in each half of the molecule. The carbonyl O atom is anti with respect to the amine H atoms and this allows for the formation of N—H...O(hydroxyl hydrogen bonds in the crystal, which results in supramolecular layers lying parallel to (100.

  7. Cr2 Revisited

    Science.gov (United States)

    Bauschlicher, Charles W., Jr.; Partridge, Harry; Langhoff, Stephen R. (Technical Monitor)

    1994-01-01

    Abstract Cr2 is studied at the coupled cluster singles and doubles level of theory, including a perturbational estimate of the connected triples [CCSD(T)]. Both spin restricted, RCCSD(T), and spin unrestricted, UCCSD(T), approaches are used. The UCCSD(T) bond length is much longer than the experimental value, while the RCCSD(T) bond length is shorter. This difference is due to the inability of the spin restricted Hartree-Fock reference to describe the antiferromagnetic coupling at larger r values. In contrast with the results obtained using density functional theory in conjunction with older functionals, the results obtained with recently developed functionals are in agreement with the UCCSD(T) results.

  8. 20.2.Infection

    Institute of Scientific and Technical Information of China (English)

    1993-01-01

    930385 Determination of serum sialic acidphospholipid and cholesterol and its clinical sig-nificance in patients with Guillain-Barre syn-drome.ZHANG Xiangjian (张祥建),et al.DeptNeurol,2nd Affil Hosp,Hebei Med Coil,Shiji-azhuang,050000.Chin J Nerv & Merit Dis 1992;18(5):271—273.Serum sialie acid (SA) level was measured inthe patients with Guillain-Barre syndrome(GBS) and normal controls.The results showedthat the serum SA level (788.1±23.8mg/L) in51 of patients with GBS was significantly higherthan that(538.1±8.9mg/L) in 50 normal con-trols (P<0.001).The positivity of serum SA inthe patients (36/51) was significantly higherthan that in normal controls (3/50,P<0.001).

  9. 2-Methoxy-9-phenoxyacridine

    Directory of Open Access Journals (Sweden)

    Damian Trzybiński

    2010-04-01

    Full Text Available The molecules in the crystal structure of the title compound, C20H15NO2, form inversion dimers connected through the C—H...N and π–π interactions. These dimers are further linked by C—H...π interactions. The methoxy group is nearly coplanar with the acridine ring system [dihedral angle = 4.5 (1°], whereas the phenoxy fragment is nearly perpendicular to it [dihedral angle = 85.0 (1°]. The mean planes of the acridine ring systems are either parallel or inclined at angles of 14.3 (1, 65.4 (1 and 67.3 (1° in the crystal.

  10. [JAK2 inhibitors].

    Science.gov (United States)

    Hernández Boluda, Juan Carlos; Gómez, Montse; Pérez, Ariadna

    2016-07-15

    Pharmacological inhibition of the kinase activity of JAK proteins can interfere with the signaling of immunomodulatory cytokines and block the constitutive activation of the JAK-STAT pathway that characterizes certain malignancies, including chronic myeloproliferative neoplasms. JAK inhibitors may, therefore, be useful to treat malignancies as well as inflammatory or immune disorders. Currently, the most significant advances have been made in the treatment of myelofibrosis, where these drugs may lead to a remarkable improvement in the control of hyperproliferative manifestations. However, available data suggest that this treatment is not curative of myelofibrosis. In general, JAK2 inhibition induces cytopaenias, with this being considered a class side-effect. By contrast, the extrahaematologic toxicity profile varies significantly among the different JAK inhibitors. At present, there are several clinical trials evaluating the combination of ruxolitinib with other drugs, in order to improve its therapeutic activity as well as reducing haematologic toxicity. PMID:27033437

  11. UA2 central calorimeter

    CERN Multimedia

    The UA2 central calorimeter measured the energy of individual particles created in proton-antiproton collisions. Accurate calibration allowed the W and Z masses to be measured with a precision of about 1%. The calorimeter had 24 slices like this one, each weighing 4 tons. The slices were arranged like orange segments around the collision point. Incoming particles produced showers of secondary particles in the layers of heavy material. These showers passed through the layers of plastic scintillator, generating light which was taken by light guides (green) to the data collection electronics. The amount of light was proportional to the energy of the original particle. The inner 23 cm of lead and plastic sandwiches measured electrons and photons; the outer 80 cm of iron and plastic sandwiches measured strongly interacting hadrons. The detector was calibrated by injecting light through optical fibres or by placing a radioactive source in the tube on the bottom edge.

  12. (0,2) Elephants

    CERN Document Server

    Aspinwall, Paul S; Plesser, M Ronen

    2010-01-01

    We enumerate massless E6 singlets for (0,2)-compactifications of the heterotic string on a Calabi-Yau threefold with the "standard embedding" in three distinct ways. In the large radius limit of the threefold, these singlets count deformations of the Calabi-Yau together with its tangent bundle. In the "small-radius" limit we apply Landau-Ginzburg methods. In the orbifold limit we use a combination of geometry and free field methods. In general these counts differ. We show how to identify states between these phases and how certain states vanish from the massless spectrum as one deforms the complex structure or Kaehler form away from the Gepner point. The appearance of extra singlets for particular values of complex structure is explored in all three pictures, and our results suggest that this does not depend on the Kaehler moduli.

  13. Presynaptic P2 receptors?

    Science.gov (United States)

    Stone, T W; O'Kane, E M; Nikbakht, M R; Ross, F M

    2000-07-01

    Although the emphasis in ATP research has been on postjunctional receptors, there is also evidence for presynaptic receptors regulating transmitter release in the autonomic nervous system. Recent work has attempted to identify similar mechanisms in the central nervous system. Some of the existing results can be explained by the metabolism of nucleotides to adenosine or adenosine 5'-monophosphate (AMP). However, studies of presynaptic effects using sensitive electrophysiological tests such as paired-pulse interactions indicate that nucleotides can act at presynaptic sites, but that their effects may be mediated by a release of adenosine. Results are also described which indicate that, under some conditions, nucleotides can mediate phenomena such as long-term potentiation, which probably involves a significant presynaptic element. In part these effects may involve a nucleotide-induced release of adenosine and the simultaneous activation of P1 and P2 receptors.

  14. Volume 7 Issue 2

    Directory of Open Access Journals (Sweden)

    Tracy Creagh

    2016-07-01

    Full Text Available The continuing interest and commitment to improving the student experience in the tertiary sector was reflected in yet another successful Students, Transitions, Achievement, Retention and Success (STARS Conference recently held in Perth, Western Australia (June 29-July 2, 2016.  As is customary, this issue of the journal publishes the top research papers selected via a peer review process and the top Emerging Initiatives selected by the Conference Committee.  As well, a Good Practice Report was selected for this issue.  The Invited Feature in this issue republishes an article from Professor Sally Kift, President of the Australian Learning and Teaching Fellows (and one of the Editors of Student Success. The statement draws on and is representative of the national reaction to the closure of the OLT, highlighting the substantial role it has played in developing and disseminating innovation and good practice in tertiary teaching and learning.

  15. Fahr病2

    Institute of Scientific and Technical Information of China (English)

    邹晓毅; 李立; 袁云华; 杨玲

    2006-01-01

    Fahr病又称“特发性基底节钙化症”、“特发性家族性脑血管亚铁钙沉着症”、“锥体外系铁钙沉着症”等,由Fahr于1930年首先描述,是以双侧基底节区、丘脑、小脑齿状核及皮层下中枢对称性钙质沉着为主要病理特征的疾病,现将我们收治的2例报告如下:

  16. 1,2-Bis(2-methoxy-6-formylphenoxyethane

    Directory of Open Access Journals (Sweden)

    Hongqi Li

    2011-02-01

    Full Text Available In the title compound [systematic name: 3,3′-dimethoxy-2,2′-(ethane-1,2-diyldioxydibenzaldehyde], C18H18O6, prepared from 1,2-dibromoethane and ortho-vanillin in the presence of sodium carbonate, the two vanillin units are linked via a CH2–CH2 bridge. The two benzene rings are inclined at a dihedral angle of 41.6 (5°.

  17. The Tetracyanopyridinide Dimer Dianion, σ-[TCNPy]2 (2.).

    Science.gov (United States)

    Hao, Jingjun; Rheingold, Arnold L; Kavand, Marzieh; van Schooten, Kipp J; Boehme, Christoph; Capdevila-Cortada, Marçal; Novoa, Juan J; Wöss, Eva; Knör, Günther; Miller, Joel S

    2016-08-22

    The reaction of 2,3,5,6-tetracyanopyridine (TCNPy) and Cr(C6 H6 )2 forms diamagnetic σ-[TCNPy]2 (2-) possessing a 1.572(3) Å intrafragment sp(3) -sp(3) bond. This is in contrast to the structurally related 1,2,4,5-tetracyanobenzene and 1,2,4,5-tetracyanopyrazine that form π-dimer dianions possessing long, multicenter bonds. PMID:27465486

  18. Fructose-2,6-bisphosphate

    DEFF Research Database (Denmark)

    Nielsen, Tom Hamborg; Rung, Jesper Henrik; Villadsen, Dorthe

    2004-01-01

    Fructose-2,6-bisphosphate (Fru-2,6-P2) regulates key reactions of the primary carbohydrate metabolism in all eukaryotes. In plants, Fru-2,6-P2 coordinates the photosynthetic carbon flux into sucrose and starch biosynthesis. The use of transgenic plants has allowed the regulatory models to be tested...... by modifying the Fru-2,6-P2 levels and the enzymes regulated by Fru-2,6-P2. Genes for the bifunctional plant enzyme that synthesizes and degrades Fru-2,6-P2 have been isolated and molecular characterization has provided new insight into structure and molecular regulation of the enzyme. Advances in Fru-2,6-P2...

  19. Copper-Catalyzed 2,2,2-Trifluoroethylthiolation of Aryl Halides.

    Science.gov (United States)

    Chen, Shouxiong; Zhang, Mengjia; Liao, Xuebin; Weng, Zhiqiang

    2016-09-01

    Herein, a copper-catalyzed 2,2,2-trifluoroethylthiolation reaction of aryl bromides and iodides with elemental sulfur, and 1,1,1-trifluoro-2-iodoethane is described. The reaction showed excellent functional group tolerance and allowed the synthesis of various substituted aryl 2,2,2-trifluoroethyl thioethers with good to excellent yields. This transformation constitutes a one-pot synthesis of 2,2,2-trifluoroethylthiolated compounds from inexpensive, readily available starting materials. Utility of the protocol was further demonstrated in the late-stage synthesis of the pirfenidone derivative. The copper thiolate species were prepared and proposed as key intermediates in the catalytic cycle. PMID:27477255

  20. Sintering of nonstoichiometric UO2

    International Nuclear Information System (INIS)

    Activated sintering of UO2 pellets at 1100 deg C is described. In CO2 atmosphere is UO2 is nonstoichiometric and pellets from active UO2 powders sinter at 900 deg C to high density. At 1100 deg C the final sintered density is practically achieved at heating on sintering temperature. After reduction and cooling in H2 atmosphere which is followed sintering in CO2 the structure is identical to the structured UO2 pellets sintered at high temperature in H2. Density of activated sintered UO2 pellets is stable, even after additional sintering at 1800 deg C. (author)

  1. LATS2 Positively Regulates Polycomb Repressive Complex 2

    Science.gov (United States)

    Torigata, Kosuke; Daisuke, Okuzaki; Mukai, Satomi; Hatanaka, Akira; Ohka, Fumiharu; Motooka, Daisuke; Nakamura, Shota; Ohkawa, Yasuyuki; Yabuta, Norikazu; Kondo, Yutaka; Nojima, Hiroshi

    2016-01-01

    LATS2, a pivotal Ser/Thr kinase of the Hippo pathway, plays important roles in many biological processes. LATS2 also function in Hippo-independent pathway, including mitosis, DNA damage response and epithelial to mesenchymal transition. However, the physiological relevance and molecular basis of these LATS2 functions remain obscure. To understand novel functions of LATS2, we constructed a LATS2 knockout HeLa-S3 cell line using TAL-effector nuclease (TALEN). Integrated omics profiling of this cell line revealed that LATS2 knockout caused genome-wide downregulation of Polycomb repressive complex 2 (PRC2) and H3K27me3. Cell-cycle analysis revealed that downregulation of PRC2 was not due to cell cycle aberrations caused by LATS2 knockout. Not LATS1, a homolog of LATS2, but LATS2 bound PRC2 on chromatin and phosphorylated it. LATS2 positively regulates histone methyltransferase activity of PRC2 and their expression at both the mRNA and protein levels. Our findings reveal a novel signal upstream of PRC2, and provide insight into the crucial role of LATS2 in coordinating the epigenome through regulation of PRC2. PMID:27434182

  2. Atmospheric chemistry of CF3CH2CH2OH

    DEFF Research Database (Denmark)

    Hurley, Michael D.; Misner, Jessica A.; Ball, James C.;

    2005-01-01

    Relative rate techniques were used to study the kinetics of the reactions of Cl atoms and OH radicals with CF3CH2C(O)H and CF3CH2CH2OH in 700 Torr of N-2 or air diluent at 296 2 K. The rate constants determined were k(Cl+CF3CH2C(O)H) = (1.81 +/- 0.27) x 10(-11), k(OH+CF3CH2C(O)H) = (2.57 +/- 0.44...

  3. 2-Methylsulfanylbenzo[f]isoquinoline

    Directory of Open Access Journals (Sweden)

    Faisal Jamshaid

    2015-05-01

    Full Text Available S-Methylation of a 4-(naphth-2-yl-β-thiolactam gives an intermediate 4-(naphth-2-yl substituted 1-azetine which undergoes a [2+2] ring-opening followed by electrocyclic ring closure of the resulting 2-azadiene to give a benzo[f]isoquinoline.

  4. 2-Methylsulfanylbenzo[f]isoquinoline

    OpenAIRE

    Faisal Jamshaid; Khan, Musharraf N.; Karl Hemming

    2015-01-01

    S-Methylation of a 4-(naphth-2-yl)-β-thiolactam gives an intermediate 4-(naphth-2-yl) substituted 1-azetine which undergoes a [2+2] ring-opening followed by electrocyclic ring closure of the resulting 2-azadiene to give a benzo[f]isoquinoline.

  5. Modeling char conversion under suspension fired conditions in O2/N2 and O2/CO2 atmospheres

    DEFF Research Database (Denmark)

    Brix, Jacob; Jensen, Peter Arendt; Jensen, Anker Degn

    2011-01-01

    The aim of this investigation has been to model combustion under suspension fired conditions in O2/N2 and O2/CO2 mixtures. Experiments used for model validation have been carried out in an electrically heated Entrained Flow Reactor (EFR) at temperatures between 1173 K and 1673 K with inlet O2...

  6. Main: AGL2ATCONSENSUS [PLACE

    Lifescience Database Archive (English)

    Full Text Available AGL2ATCONSENSUS S000339 16-May-2001 (last modified) uchi Binding consensus sequence... of Arabidopsis (A.t.) AGL2 (AGAMOUS-like 2); AGL2 contains MADS domain; AGL2 binds DNA as a dimer; See S000338; MADS; AGL1; AGAMOUS; flower; Arabidopsis thaliana NNWNCCAWWWWTRGWWAN ...

  7. Nd2[MoC2] and RE2[WC2], RE=Ce, Pr, Nd: New carbometalates with Pr2[MoC2] structure type

    Directory of Open Access Journals (Sweden)

    Enkhtsetseg Dashjav, Yurii Prots, Guido Kreiner, Walter Schnelle, Frank R. Wagner and Rüdiger Kniep

    2007-01-01

    Full Text Available Four new ternary rare-earth-metal carbometalates, Nd2[MoC2] and RE2[WC2] with RE=Ce, Pr, Nd, have been synthesized by argon arc melting and subsequent heat treatment at 1170 K for 30 days. They crystallize with the Pr2[MoC2] structure type with isolated C4− species and are typical carbometalates with (i low metal-to-carbon ratio, (ii tetrahedral coordination of the transition metals (T by carbon, and (iii a polyanionic network ∞2[(TC26-]. According to resistivity measurements the compounds are bad metals. Volume chemistry and magnetic susceptibility measurements indicate Pr3+, Nd3+, and Ce4+ species, respectively. In the latter case, the additional electron is not transferred to the polyanionic network, instead it mainly populates the Ce partial structure.

  8. Fundamental Unit System and Class Number for Real Number Fields of Type (2,2,2)

    Institute of Scientific and Technical Information of China (English)

    2000-01-01

    Let k=Q(√(D2+md)(D2+nd)(D2+rd)), this paper proves firstly that the fundamental unit of k isε=(√(D2+md)(D2+nd)+√D2(D2+rd))2/(|mn|d2)), where D,d,m,n, and r are rational integers satisfying certain conditions. Consequently, we describe the fundamental unit system of k is k=Q(√(D2+md), √(D2+nd), √(D2+rd)explicitly by the fundamental unit of all the quadratic subfields and the class number hK explicitly by the class numbers of all the quadratic subfields. We also provide the fundamental unit system of some fields of (2,2)-type.

  9. Structure, phase transitions, dielectric and spectroscopic studies of the 2-aminopyrimidinium salts: [(2-NH 2C 4N 2H 3) 2H][ClO 4] and [2-NH 2C 4N 2H 4][BF 4

    Science.gov (United States)

    Czupiński, O.; Wojtaś, M.; Ciunik, Z.; Jakubas, R.

    2006-01-01

    Crystal structure of the 2-aminopyrimidinium derivatives: [(2-NH 2C 4N 2H 3) 2H][ClO 4] (I) and [2-NH 2C 4N 2H 4][BF 4] (II) has been determined at 100 K (I) and 293 K (II) by means of single crystal X-ray diffraction as monoclinic space group, P2/c and P2/n, respectively. The asymmetric part of the unit cell of (I) contains two symmetry independent 2-aminopyrimidine forming one dimeric cation and one disordered perchlorate anion. The structure of (II) consists of 2-aminopyrimidinium cation, [2-NH 2C 4N 2H 4] +, protonated at a pyrimidine ring-N atom and [BF 4] - anion. Differential scanning calorimetry (DSC) on perchlorate derivative ( 1:1), [2-NH 2C 4N 2H 3][ClO 4] (III)—being isomorphic to tetrafluoroborate one (I) at room temperature, reveals two phase transitions of first order: at 250/275 K and 390/410 K (cooling-heating, respectively), whereas the analog (II) only one transition at high temperatures—343/385 K. The dielectric studies in the frequency range 75 kHz - 10 MHz disclose relaxation process at high temperatures in salt (I). Infrared spectra of polycrystalline [2-NH 2C 4N 2H 4][BF 4] have been studied in the temperature range 300-420 K. Substantial changes in the temperature evolution of frequencies of internal modes of the 2-aminopyrimidinium cations and [BF 4] - anions near 390 K are due to the variations in the motion of both moieties and hydrogen bond configuration. The experimental studies indicate that all phase transitions taking place in studied 2-aminopyrimidinium derivatives are classified as an order-disorder.

  10. Role of TRPM2 in H(2O(2-induced cell apoptosis in endothelial cells.

    Directory of Open Access Journals (Sweden)

    Lei Sun

    Full Text Available Melastatin-like transient receptor potential channel 2 (TRPM2 is an oxidant-sensitive and cationic non-selective channel that is expressed in mammalian vascular endothelium. Here we investigated the functional role of TRPM2 channels in hydrogen peroxide (H(2O(2-induced cytosolic Ca(2+ ([Ca(2+](i elavation, whole-cell current increase, and apoptotic cell death in murine heart microvessel endothelial cell line H5V. A TRPM2 blocking antibody (TM2E3, which targets the E3 region near the ion permeation pore of TRPM2, was developed. Treatment of H5V cells with TM2E3 reduced the [Ca(2+](i rise and whole-cell current change in response to H(2O(2. Suppressing TRPM2 expression using TRPM2-specific short hairpin RNA (shRNA had similar inhibitory effect. H(2O(2-induced apoptotic cell death in H5V cells was examined using MTT assay, DNA ladder formation analysis, and DAPI-based nuclear DNA condensation assay. Based on these assays, TM2E3 and TRPM2-specific shRNA both showed protective effect against H(2O(2-induced apoptotic cell death. TM2E3 and TRPM2-specific shRNA also protect the cells from tumor necrosis factor (TNF-α-induced cell death in MTT assay. In contrast, overexpression of TRPM2 in H5V cells resulted in an increased response in [Ca(2+](i and whole-cell currents to H(2O(2. TRPM2 overexpression also aggravated the H(2O(2-induced apoptotic cell death. Downstream pathways following TRPM2 activation was examined. Results showed that TRPM2 activity stimulated caspase-8, caspase-9 and caspase-3. These findings strongly suggest that TRPM2 channel mediates cellular Ca(2+ overload in response to H(2O(2 and contribute to oxidant-induced apoptotic cell death in vascular endothelial cells. Down-regulating endogenous TRPM2 could be a means to protect the vascular endothelial cells from apoptotic cell death.

  11. Three-dimensional WS2 nanosheet networks for H2O2 produced for cell signaling

    Science.gov (United States)

    Tang, Jing; Quan, Yingzhou; Zhang, Yueyu; Jiang, Min; Al-Enizi, Abdullah M.; Kong, Biao; An, Tiance; Wang, Wenshuo; Xia, Limin; Gong, Xingao; Zheng, Gengfeng

    2016-03-01

    Hydrogen peroxide (H2O2) is an important molecular messenger for cellular signal transduction. The capability of direct probing of H2O2 in complex biological systems can offer potential for elucidating its manifold roles in living systems. Here we report the fabrication of three-dimensional (3D) WS2 nanosheet networks with flower-like morphologies on a variety of conducting substrates. The semiconducting WS2 nanosheets with largely exposed edge sites on flexible carbon fibers enable abundant catalytically active sites, excellent charge transfer, and high permeability to chemicals and biomaterials. Thus, the 3D WS2-based nano-bio-interface exhibits a wide detection range, high sensitivity and rapid response time for H2O2, and is capable of visualizing endogenous H2O2 produced in living RAW 264.7 macrophage cells and neurons. First-principles calculations further demonstrate that the enhanced sensitivity of probing H2O2 is attributed to the efficient and spontaneous H2O2 adsorption on WS2 nanosheet edge sites. The combined features of 3D WS2 nanosheet networks suggest attractive new opportunities for exploring the physiological roles of reactive oxygen species like H2O2 in living systems.Hydrogen peroxide (H2O2) is an important molecular messenger for cellular signal transduction. The capability of direct probing of H2O2 in complex biological systems can offer potential for elucidating its manifold roles in living systems. Here we report the fabrication of three-dimensional (3D) WS2 nanosheet networks with flower-like morphologies on a variety of conducting substrates. The semiconducting WS2 nanosheets with largely exposed edge sites on flexible carbon fibers enable abundant catalytically active sites, excellent charge transfer, and high permeability to chemicals and biomaterials. Thus, the 3D WS2-based nano-bio-interface exhibits a wide detection range, high sensitivity and rapid response time for H2O2, and is capable of visualizing endogenous H2O2 produced in

  12. Inverse bottleneck in Eu2+-Mn2+ energy transfer

    International Nuclear Information System (INIS)

    The energy transfer (ET) between Eu2+ and Mn2+ in Ca5(PO4)3Cl has been investigated. At low intensities under 405 nm excitation, time-resolved experiments provide microscopic parameters for the energy transfer between adjacent Eu2+ and Mn2+ ions. At high intensities, we observe a non-linear component in the energy transfer process due to ground state depletion of the Mn2+ ions, leading not to a reduction, but to an increase in the energy transfer rate between Eu2+ and Mn2+ ions and also energy transfer between excited Mn2+ ions. This results in a sub-linear response of both Eu2+ and Mn2+ luminescence as a function of intensity. Our observations are quantitatively described by a model using energy transfer to Mn2+ ions in both the ground and the excited state.

  13. Syntheses and Characterizations of (CH3CH2CH2CH2NH3)6(BiI6)(I)2I3 and (NH3CH2CH2NH3)2Bi2I10?

    Institute of Scientific and Technical Information of China (English)

    LI Guo-Qing; XU Gang; ZHENG Fa-Kun; GUO Guo-Cong

    2008-01-01

    The title compounds have been respectively synthesized by solution process and solvothermal reaction, and their crystal structures were determined by X-ray diffraction method. For (CH3CH2CH2CH2NH3)6(BiI6)(I)2I3 1, it crystallizes in triclinic, space group P with Mr = 2049.76, a = 8.5719(1), b = 11.7461(3), c = 15.700(1) ?, V = 1451.4(1) ?3, Z = 1, Dc = 2.345 g/cm3, F(000) = 924, ((MoK() = 8.907 mm-1, T = 293(2) K, the final R = 0.0655 and wR = 0.0804 for 2399 observed reflections with I > 2((I). For (NH3CH2CH2NH3)2Bi2I10 2, it crystallizes in monoclinic, space group P21/n with Mr = 1811.20, a = 8.434(4), b = 13.862(6), c = 13.362(6) ?, V = 1499.9(12) ?3, Z = 2, Dc = 4.010 g/cm3, F(000) = 1536, ((MoK() = 22.007 mm-1, T = 293(2) K, the final R = 0.0584 and wR = 0.1451 for 1798 observed reflections with I > 2((I). The structures of 1 and 2 contain halobismuthate monomer and dimers, respectively. It is noteworthy that the dimers and their organic counters in 2 connect each other by N

  14. Main: E2FAT [PLACE

    Lifescience Database Archive (English)

    Full Text Available tial E2F target genes; most potential E2F targets identified in silico show a cell cycle-regulated expression; Y=T/C; see S000366; E2F; cell cycle; Arabidopsis thaliana TYTCCCGCC ...

  15. Pressure induced structural transformation in Gd2Ti2O7 and Gd2Zr2O7

    Energy Technology Data Exchange (ETDEWEB)

    Xiao, Haiyan [Pacific Northwest National Laboratory (PNNL); Weber, William J [ORNL

    2011-01-01

    Ab initio total energy calculations have been performed to study the phase stability of Gd2Ti2O7 and Gd2Zr2O7 pyrochlores over the pressure range from 0 to 60 GPa. Both compounds are unstable under pressure, and phase transformations to the defect-cotunnite structure are predicted. The phase transformation pressure of 43.6 GPa for Gd2Ti2O7 is considerably larger than the value of 13 GPa for Gd2Zr2O7, in good agreement with experiments. The decreased structural stability of Gd2Zr2O7 under pressure, relative to Gd2Ti2O7, is a consequence of the lower compressibility of the Zr O bond and the higher compressibility of the Gd O bond. In addition, the Gd 4f electrons are found to have only a small effect in determining the pressure induced phase transformation.

  16. Pressure Induced Structural Transformation in Gd2Ti2O7 and Gd2Zr2O7

    Energy Technology Data Exchange (ETDEWEB)

    Xiao, Haiyan Y.; Weber, William J.

    2011-01-05

    Ab initio total energy calculations have been performed to study the phase stability of Gd2Ti2O7 and Gd2Zr2O7 pyrochlores over the pressure range from 0 to 60 GPa. Both compounds are unstable under pressure, and phase transformations to the defect-cotunnite structure are predicted. The phase transformation pressure of 43.6 GPa for Gd2Ti2O7 is considerably larger than the value of 13 GPa for Gd2Zr2O7, in good agreement with experiments. The decreased structural stability of Gd2Zr2O7 under pressure, relative to Gd2Ti2O7, is a consequence of the lower compressibility of the langZr–Orang bond and the higher compressibility of the langGd–Orang bond. In addition, the Gd 4f electrons are found to have only a small effect in determining the pressure induced phase transformation.

  17. Pressure induced structural transformation in Gd2Ti2O7 and Gd2Zr2O7

    Science.gov (United States)

    Xiao, H. Y.; Weber, W. J.

    2011-01-01

    Ab initio total energy calculations have been performed to study the phase stability of Gd2Ti2O7 and Gd2Zr2O7 pyrochlores over the pressure range from 0 to 60 GPa. Both compounds are unstable under pressure, and phase transformations to the defect-cotunnite structure are predicted. The phase transformation pressure of 43.6 GPa for Gd2Ti2O7 is considerably larger than the value of 13 GPa for Gd2Zr2O7, in good agreement with experiments. The decreased structural stability of Gd2Zr2O7 under pressure, relative to Gd2Ti2O7, is a consequence of the lower compressibility of the langZr-Orang bond and the higher compressibility of the langGd-Orang bond. In addition, the Gd 4f electrons are found to have only a small effect in determining the pressure induced phase transformation.

  18. TMIST-2 Transport Test

    Energy Technology Data Exchange (ETDEWEB)

    Glen R. Longhurst

    2008-02-01

    In anticipation of the TMIST-2 experiment in the Advanced Test Reactor, there was a need to determine if the tritium that is expected to be observed at the outlet of the experiment would be seen or if it may be lost on its way from the experiment in the core to the measurement station. To assist in resolving that issue, a bench-scale experiment was conducted in the Idaho National Laboratory’s Safety and Tritium Applied Research (STAR) facility using deuterium and a mass spectrometer in lieu of tritium with ion chambers, bubblers, and scintillation counting. The experiment replicated the concentration of the hydrogen isotope, the flow rates anticipated, and the residence times. It was found that there was initial uptake on tubing walls, presumably due to oxidation of the hydrogen isotopes to water and adsorption or isotopic exchange, but that saturates relatively quickly, and once saturated, the concentration of deuterium at the outlet of the tubing system was essentially the same as it was at the experiment inlet under the conditions modeled in the experiment.

  19. [Universal electrogustometer EG-2].

    Science.gov (United States)

    Wałkanis, Andrzej; Czesak, Michał; Pleskacz, Witold A

    2011-01-01

    Electrogustometry is a method for taste diagnosis and measurement. The EG-2 project is being developed in cooperation between Warsaw University of Technology and Military institute of Medicine in Warsaw. The device is an evolution of the recent universal electrogustometer EG-1 prototype. Due to considerations and experiences acquired during prototype usage, many enhancements have been incorporated into device. The aim was to create an easy-to-use, portable, battery powered device, enabled for fast measurements. Developed electrogustometer is using innovative, low-power microprocessor system, which control whole device. User interface is based on 5.7" graphical LCD (Liquid Crystal Display) and touchscreen. It can be directly operated by finger or with optional stylus. Dedicated GUI (Graphical User Interface) offers simple, predefined measurements and advance settings of signal parameters. It is also possible to store measurements results and patients data in an internal memory. User interface is multilanguage. Signals for patients examinations, supplied with bipolar electrode, are generated by an on-board circuit using DDS (Direct-Digital Synthesis) and DAC (Digital-to-Analog Converter). Electrogustometer is able to generate DC, sinus, triangle or rectangle signals with current amplitude from 0 to 500 pA and frequency form 0 to 500 Hz. Device is designed for manual and automeasurement modes. By using USB (Universal Serial Bus) port it is possible to retrieve data stored in internal memory and charging of built-in Li-lon battery as a source of power.

  20. Bike 2 Work

    CERN Multimedia

    Anaïs Schaeffer

    2012-01-01

    Are you a CERN cyclist? If so, join the Bike 2 Work competition that has just started! The more kilometres you travel by bike, the closer you’ll get to winning…   Yngve Inntjore Levinsen works at CERN, in the BE Department, and is one of the many people who travel to work by bike. Convinced by the benefits and the well-being that this mode of transport brings, he decided to promote it by running a competition. “Everyone working at CERN can participate,” says Yngve. “They just need to sign up on the competition website, or via their Facebook login. Then, participants simply have to report regularly the number of kilometres they cover by bike, travelling between home and work, or during the day between different points at CERN. ” The competition began on 1 March and will last all year long. The 2012 results will be announced at the end of the year. Of course, the winner will be the cyclist who has travelled the most kilometres during the ...

  1. SLARette Mark 2 system

    International Nuclear Information System (INIS)

    The SLAR (Spacer Location and Repositioning) program has developed the technology and tooling necessary to locate and reposition the fuel channel spacers that separate the pressure tube from the calandria tube in a CANDU reactor. The in-channel SLAR tool contains all the inspection probes, and is capable of moving spacers under remote control. The SLAR inspection computer system translates all eddy currents and ultrasonic signals from the in-channel tool into various graphic displays. The in-channel SLAR tool can be delivered and manipulated in a fuel channel by either a SLAR delivery machine or a SLARette delivery machine. The SLAR delivery machine consists of a modified fuelling machine, and is capable of operating under totally remote control in automatic or semi-automatic mode. The SLARette delivery machine is a smaller less automated version, which was designed to be quickly installed, operated, and removed from a limited number of fuel channels during regular annual maintenance outages. This paper describes the design and operation of the SLARette Mark 2 system. 5 figs

  2. Transcription factor NFE2L2/NRF2 is a regulator of macroautophagy genes

    Science.gov (United States)

    Pajares, Marta; Jiménez-Moreno, Natalia; García-Yagüe, Ángel J.; Escoll, Maribel; de Ceballos, María L.; Van Leuven, Fred; Rábano, Alberto; Yamamoto, Masayuki; Rojo, Ana I.; Cuadrado, Antonio

    2016-01-01

    ABSTRACT Autophagy is a highly coordinated process that is controlled at several levels including transcriptional regulation. Here, we identify the transcription factor NFE2L2/NRF2 (nuclear factor, erythroid 2 like 2) as a regulator of autophagy gene expression and its relevance in a mouse model of Alzheimer disease (AD) that reproduces impaired APP (amyloid β precursor protein) and human (Hs)MAPT/TAU processing, clearance and aggregation. We screened the chromatin immunoprecipitation database ENCODE for 2 proteins, MAFK and BACH1, that bind the NFE2L2-regulated enhancer antioxidant response element (ARE). Using a script generated from the JASPAR's consensus ARE sequence, we identified 27 putative AREs in 16 autophagy-related genes. Twelve of these sequences were validated as NFE2L2 regulated AREs in 9 autophagy genes by additional ChIP assays and quantitative RT-PCR on human and mouse cells after NFE2L2 activation with sulforaphane. Mouse embryo fibroblasts of nfe2l2-knockout mice exhibited reduced expression of autophagy genes, which was rescued by an NFE2L2 expressing lentivirus, and impaired autophagy flux when exposed to hydrogen peroxide. NFE2L2-deficient mice co-expressing HsAPPV717I and HsMAPTP301L, exhibited more intracellular aggregates of these proteins and reduced neuronal levels of SQSTM1/p62, CALCOCO2/NDP52, ULK1, ATG5 and GABARAPL1. Also, colocalization of HsAPPV717I and HsMAPTP301L with the NFE2L2-regulated autophagy marker SQSTM1/p62 was reduced in the absence of NFE2L2. In AD patients, neurons expressing high levels of APP or MAPT also expressed SQSTM1/p62 and nuclear NFE2L2, suggesting their attempt to degrade intraneuronal aggregates through autophagy. This study shows that NFE2L2 modulates autophagy gene expression and suggests a new strategy to combat proteinopathies. PMID:27427974

  3. The D2 Susy Zoo

    CERN Document Server

    Bak, D; Townsend, P K; Bak, Dongsu; Ohta, Nobuyoshi; Townsend, Paul K.

    2007-01-01

    We present new supersymmetric solutions of the Dirac-Born-Infeld equations for time-independent D2-branes, including a 1/2 supersymmetric `dyonic' D2-brane and various 1/4 supersymmetric configurations that include `twisted' supertubes, superfunnels with arbitrary planar cross-section, asymptotically planar D2-branes, and non-singular intersections of `magnetic' D2-branes. Our analysis is exhaustive for D2-branes in three space dimensions.

  4. Structure of human ubiquitin-conjugating enzyme E2 G2 (UBE2G2/UBC7)

    International Nuclear Information System (INIS)

    The crystal structure of human UBE2G2/UBC7 was solved at 2.56 Å resolution. The superimposition of UBE2G2 on UbcH7 in a c-Cbl–UbcH7–ZAP70 ternary complex suggested that the two loop regions of UBE2G2 interact with the RING domain in a similar way as UbcH7. The human ubiquitin-conjugating enzyme E2 G2 (UBE2G2/UBC7) is involved in protein degradation, including a process known as endoplasmic reticulum-associated degradation (ERAD). The crystal structure of human UBE2G2/UBC7 was solved at 2.56 Å resolution. The UBE2G2 structure comprises a single domain consisting of an antiparallel β-sheet with four strands, five α-helices and two 310-helices. Structural comparison of human UBE2G2 with yeast Ubc7 indicated that the overall structures are similar except for the long loop region and the C-terminal helix. Superimposition of UBE2G2 on UbcH7 in a c-Cbl–UbcH7–ZAP70 ternary complex suggested that the two loop regions of UBE2G2 interact with the RING domain in a similar way to UbcH7. In addition, the extra loop region of UBE2G2 may interact with the RING domain or its neighbouring region and may be involved in the binding specificity and stability

  5. The D2 Susy Zoo

    OpenAIRE

    Bak, Dongsu; Ohta, Nobuyoshi; Townsend, Paul K

    2006-01-01

    We present new supersymmetric solutions of the Dirac-Born-Infeld equations for time-independent D2-branes, including a 1/2 supersymmetric `dyonic' D2-brane and various 1/4 supersymmetric configurations that include `twisted' supertubes, superfunnels with arbitrary planar cross-section, asymptotically planar D2-branes, and non-singular intersections of `magnetic' D2-branes. Our analysis is exhaustive for D2-branes in three space dimensions.

  6. Alkyl- und Aryl-(2,2-dimethylpropionyl)trimethylsilylarsane (Acyl- und Alkylidenarsane ; 2,1)

    OpenAIRE

    Becker, Gerd; Gutekunst, Gerhard

    1980-01-01

    Die Alkyl- oder Arylbis(trimethylsilyl)arsane la-1f [R=CH3a; C2H5b; (CH3)2CH c; (CH3)3C d; C6H5-CH2e und C6H5f] sowie Tris(trimethylsilyl)arsan 1h und 2,2-Di-methylpropionylchlorid 4 im Molverhältnis 1:1 reagieren im unpolaren Cyclopentan unter Substitution einer Trimethylsilylgruppe durch den Acylrest zu den Alkyl- oder Aryl-(2,2-dimethylpropionyl)tri-methylsilylarsanen 2a-2f und zum (2,2-Dimethylpropionyl)bis(trimethylsilyl)arsan 2h. Aus Bis-[bis(trimethylsilyl)arsano]methan lg (R=CH2) ist...

  7. Towards rational design of redox-stratified biofilms

    DEFF Research Database (Denmark)

    Lackner, Susanne

    Biologisk kvælstoffjernelse er en central proces indenfor avanceret spildevandsrensning. Denne afhandling beskriver anvendelsen af beluftede membran biofilm reaktorer (eng: MABRs) til fuld autotrof kvælstoffjernelse. Denne ret nye kvælstofomsætningsvej baseres på delvis omdannelse af ammonium til...

  8. Dielectric Behaviour of Binary Mixture of 2-Chloroaniline with 2-Methoxyethanol and 2-Ethoxyethanol

    OpenAIRE

    Bhupesh G Nemmaniwar; Kalyankar, Namdeo V.; Pothaji L. Kadam

    2013-01-01

    Densities, viscosities, refractive indices, dielectric constant (ε') and dielectric loss (ε'') of 2-chloroaniline (2CA) + 2-methoxyethanol (2ME) and 2-chloroaniline (2CA) + 2-ethoxyethanol (2EE) for different mole fractions of 2-chloroaniline in binary mixture have been measured at single microwave frequency 10.985 GHz at 300C by Surber method using microwave X-band. The values of dielectric parameters (ε' and ε'' )  have been used to evaluate the molar polarization (P12) loss tangent (tanδ),...

  9. Reflection matrices with $U_q[osp^{(2)}(2|2m)]$ symmetry

    CERN Document Server

    Vieira, R S

    2016-01-01

    In this work we report and classify the reflection $K$ matrices with the $U_q[osp^{(2)}(2|2m)]$ symmetry. This correspond to a special case of the multiparametric $U_q[osp^{(2)}(2n+2|2m)]$ vertex model which, for $m=0$, reduces to the multiparametric $U_q[D_{n+1}^{(2)}]$ vertex model. The corresponding reflection $K$ matrices for the multiparametric $U_q[D_{n+1}^{(2)}]$ vertex model were presented by us before.

  10. Atomic parameters for the 2{p}^{5}3p\\;{}^{2}{[3/2]}_{2}-2{p}^{5}3s\\;{}^{2}{[3/2]}_{2}^{o} transition of Ne I relevant in nuclear physics

    Science.gov (United States)

    Li, Jiguang; Godefroid, Michel; Wang, Jianguo

    2016-06-01

    We calculated the magnetic dipole hyperfine interaction constants and the electric field gradients of 2{p}53p{}2{[3/2]}2 and 2{p}53s{}2[3/2{]}2o levels of Ne I by using the multiconfiguration Dirac–Hartree–Fock method. The electronic factors contributing to the isotope shifts were also estimated for the λ =614.5 {{nm}} transition connecting these two states. Electron correlation and relativistic effects including the Breit interaction were investigated in detail. Combining with recent measurements, we extracted the nuclear quadrupole moment values for 20Ne and 23Ne with a smaller uncertainty than the current available data. Isotope shifts in the 2{p}53p{}2{[3/2]}2-2{p}53s{}2[3/2{]}2o transition based on the present calculated field- and mass-shift parameters are in good agreement with the experimental values. However, the field shifts in this transition are two or three orders of magnitude smaller than the mass shifts, making rather difficult to deduce changes in nuclear-charge mean-square radii. According to our theoretical predictions, we suggest using instead transitions connecting levels arising from the 2p53s configuration to the ground state, for which the normal mass shift and specific mass shift contributions counteract each other, producing relatively small mass shifts that are only one order of magnitude larger than relatively large field shifts, especially for the 2{p}53s{}2[1/2{]}1o-2{p}6{}1{S}0 transition.

  11. Isotope shifts of the 2$p_{3/2}$-2$p_{1/2}$ transition in B-like ions

    CERN Document Server

    Zubova, N A; Tupitsyn, I I; Shabaev, V M; Kozhedub, Y S; Plunien, G; Brandau, C; Stohlker, Th

    2016-01-01

    Isotope shifts of the 2$p_{3/2}$-2$p_{1/2}$ transition in B-like ions are evaluated for a wide range of the nuclear charge number: Z=8-92. The calculations of the relativistic nuclear recoil and nuclear size effects are performed using a large scale configuration-interaction Dirac-Fock-Sturm method. The corresponding QED corrections are also taken into account. The results of the calculations are compared with the theoretical values obtained with other methods. The accuracy of the isotope shifts of the 2$p_{3/2}$-2$p_{1/2}$ transition in B-like ions is significantly improved.

  12. Isotope shifts of the 2 p3 /2-2 p1 /2 transition in B-like ions

    Science.gov (United States)

    Zubova, N. A.; Malyshev, A. V.; Tupitsyn, I. I.; Shabaev, V. M.; Kozhedub, Y. S.; Plunien, G.; Brandau, C.; Stöhlker, Th.

    2016-05-01

    Isotope shifts of the 2 p3 /2-2 p1 /2 transition in B-like ions are evaluated for a wide range of the nuclear charge number: Z =8 -92 . The calculations of the relativistic nuclear recoil and nuclear size effects are performed using a large-scale configuration-interaction Dirac-Fock-Sturm method. The corresponding QED corrections are also taken into account. The results of the calculations are compared with the theoretical values obtained with other methods. The accuracy of the isotope shifts of the 2 p3 /2-2 p1 /2 transition in B-like ions is significantly improved.

  13. High-temperature heat capacity of stannates Pr2Sn2O7 and Nd2Sn2O7

    Science.gov (United States)

    Denisova, L. T.; Irtyugo, L. A.; Beletskii, V. V.; Denisov, V. M.

    2016-07-01

    Oxide compounds Pr2Sn2O7 and Nd2Sn2O7 have been obtained by solid-phase synthesis. The effect of temperature on the heat capacity of Pr2Sn2O7 (360-1045 K) and Nd2Sn2O7 (360-1030 K) has been studied using differential scanning calorimetry. The thermodynamic properties of the compounds (changes in enthalpy, entropy, and the reduced Gibbs energy) have been calculated by the experimental data of C p = f( T).

  14. Heat capacity of the frustrated magnetic pyrochlores Gd2Zr2O7 and Gd2Hf2O7

    Science.gov (United States)

    Durand, Alice M.; Klavins, Peter; Corruccini, L. R.

    2008-06-01

    The heat capacities of Gd2Zr2O7 and Gd2Hf2O7 both show sharp peaks in the vicinity of 0.77 K, consistent with the existence of long range magnetic order. They are superimposed in both cases on broader maxima centered at approximately 1 K, presumably due to short range spin correlations. Both compounds exhibit antiferromagnetic interactions, with Weiss constants of approximately -7 K. Comparisons are made to earlier results for the isomorphic compounds Gd2Ti2O7 and Gd2Sn2O7.

  15. Mutating loops and 2-cycles in 2-CY triangulated categories

    CERN Document Server

    Bertani-Økland, Marco Angel

    2010-01-01

    We derive an algorithm for mutating quivers of 2-CY tilted algebras that have loops and 2-cycles, under certain specific conditions. Further, we give the classification of the 2-CY tilted algebras coming from standard algebraic 2-CY triangulated categories with a finite number of indecomposables. These form a class of algebras that satisfy the setup for our mutation algorithm.

  16. Activated sludge model No. 2d, ASM2d

    DEFF Research Database (Denmark)

    Henze, M.

    1999-01-01

    The Activated Sludge Model No. 2d (ASM2d) presents a model for biological phosphorus removal with simultaneous nitrification-denitrification in activated sludge systems. ASM2d is based on ASM2 and is expanded to include the denitrifying activity of the phosphorus accumulating organisms (PAOs...

  17. Reining in H2O2 for Safe Signaling

    OpenAIRE

    Planson, Anne-Gaëlle; Delaunay‐Moisan, Agnès

    2010-01-01

    Mammalian cells use hydrogen peroxide (H(2)O(2)) not only to kill invading pathogens, but also as a signaling modulator. Woo et al. (2010) now show that the local inactivation of a H(2)O(2)-degrading enzyme ensures that the production of this oxidant is restricted to the signaling site.

  18. Units in Z_2(C_2 × D_infinity

    Directory of Open Access Journals (Sweden)

    Kanchan Joshi

    2012-12-01

    Full Text Available In this paper we consider the group algebra R(C_2 ×D_infinity. It is shown that R(C_2 ×D_infinity can be represented by a 4 × 4 block circulant matrix. It is also shown that U(Z_2(C_2 × D_infinity isinfinitely generated

  19. D = 2, N = 2 superconformal symmetries and models

    Energy Technology Data Exchange (ETDEWEB)

    Delduc, F.; Gieres, F.; Gourmelen, S.

    1996-12-31

    We discuss the following aspects of two-dimensional N = 2 supersymmetric theories defined on compact super Riemann surfaces: parametrization of (2,0) and (2,2) superconformal structures in terms of Beltrami coefficients and formulation of superconformal models on such surfaces (invariant actions, anomalies and compensating actions, Ward identities). (author).

  20. 2-2 and 2-3 Intercombination Transitions in Be-like Ions

    OpenAIRE

    Ralchenko, Yu. V.; Vainshtein, L. A.

    1995-01-01

    We report here on calculation of probabilities of intercombination transitions $2s^2$ $^1S_0$ - $2s2p$ $^3P_1$, $2s3p$ $^3P_1$ for Be-like ions along the isoelectronic sequence for large range of $Z$. Our results obtained with the $1/Z$ expansion method agree well with experimental data including the recent ones.

  1. YEAR 2 BIOMASS UTILIZATION

    Energy Technology Data Exchange (ETDEWEB)

    Christopher J. Zygarlicke

    2004-11-01

    This Energy & Environmental Research Center (EERC) Year 2 Biomass Utilization Final Technical Report summarizes multiple projects in biopower or bioenergy, transportation biofuels, and bioproducts. A prototype of a novel advanced power system, termed the high-temperature air furnace (HITAF), was tested for performance while converting biomass and coal blends to energy. Three biomass fuels--wood residue or hog fuel, corn stover, and switchgrass--and Wyoming subbituminous coal were acquired for combustion tests in the 3-million-Btu/hr system. Blend levels were 20% biomass--80% coal on a heat basis. Hog fuel was prepared for the upcoming combustion test by air-drying and processing through a hammer mill and screen. A K-Tron biomass feeder capable of operating in both gravimetric and volumetric modes was selected as the HITAF feed system. Two oxide dispersion-strengthened (ODS) alloys that would be used in the HITAF high-temperature heat exchanger were tested for slag corrosion rates. An alumina layer formed on one particular alloy, which was more corrosion-resistant than a chromia layer that formed on the other alloy. Research activities were completed in the development of an atmospheric pressure, fluidized-bed pyrolysis-type system called the controlled spontaneous reactor (CSR), which is used to process and condition biomass. Tree trimmings were physically and chemically altered by the CSR process, resulting in a fuel that was very suitable for feeding into a coal combustion or gasification system with little or no feed system modifications required. Experimental procedures were successful for producing hydrogen from biomass using the bacteria Thermotoga, a deep-ocean thermal vent organism. Analytical procedures for hydrogen were evaluated, a gas chromatography (GC) method was derived for measuring hydrogen yields, and adaptation culturing and protocols for mutagenesis were initiated to better develop strains that can use biomass cellulose. Fly ash derived from

  2. YEAR 2 BIOMASS UTILIZATION

    Energy Technology Data Exchange (ETDEWEB)

    Christopher J. Zygarlicke

    2004-11-01

    This Energy & Environmental Research Center (EERC) Year 2 Biomass Utilization Final Technical Report summarizes multiple projects in biopower or bioenergy, transportation biofuels, and bioproducts. A prototype of a novel advanced power system, termed the high-temperature air furnace (HITAF), was tested for performance while converting biomass and coal blends to energy. Three biomass fuels--wood residue or hog fuel, corn stover, and switchgrass--and Wyoming subbituminous coal were acquired for combustion tests in the 3-million-Btu/hr system. Blend levels were 20% biomass--80% coal on a heat basis. Hog fuel was prepared for the upcoming combustion test by air-drying and processing through a hammer mill and screen. A K-Tron biomass feeder capable of operating in both gravimetric and volumetric modes was selected as the HITAF feed system. Two oxide dispersion-strengthened (ODS) alloys that would be used in the HITAF high-temperature heat exchanger were tested for slag corrosion rates. An alumina layer formed on one particular alloy, which was more corrosion-resistant than a chromia layer that formed on the other alloy. Research activities were completed in the development of an atmospheric pressure, fluidized-bed pyrolysis-type system called the controlled spontaneous reactor (CSR), which is used to process and condition biomass. Tree trimmings were physically and chemically altered by the CSR process, resulting in a fuel that was very suitable for feeding into a coal combustion or gasification system with little or no feed system modifications required. Experimental procedures were successful for producing hydrogen from biomass using the bacteria Thermotoga, a deep-ocean thermal vent organism. Analytical procedures for hydrogen were evaluated, a gas chromatography (GC) method was derived for measuring hydrogen yields, and adaptation culturing and protocols for mutagenesis were initiated to better develop strains that can use biomass cellulose. Fly ash derived from

  3. Structure of double cerium and potassium sulfate, 2K2SO4xCe(SO4)2x2H2O

    International Nuclear Information System (INIS)

    A diffractometric investigation of 2K2SO4xCe(SO4)2x2H2O structure is carried out. The refined compound parameters are equal to: a=12.407(2), b=11.160(2), c=13.539(2) A, β=111.63(1) deg, V=1742.6(8) A3, Z=4, dsub(calcd)=2.747(1) g/cm3, space group P21/c. Atom coordinates, interatomic distances and valent angles are presented. A conclusion is made that the compound of 2K2SO4cxCe(SO4)2x2H2O brutto-composition has K8[Ce2(SO4)8]4H2O structural formula and contains dimeric anions [(SO4)3Ce(μ-SO4)2xCe(SO4)3]8-

  4. 3-{2-[2-(2-Fluorobenzylidenehydrazinyl]-1,3-thiazol-4-yl}-2H-chromen-2-one

    Directory of Open Access Journals (Sweden)

    Afsheen Arshad

    2010-06-01

    Full Text Available In the title compound, C19H12FN3O2S, the chromene ring system and the thiazole ring are approximately planar [maximum deviations of 0.023 (3 Å and 0.004 (2 Å, respectively]. The chromene ring system is inclined at angles of 4.78 (10 and 26.51 (10° with respect to the thiazole and benzene rings, respectively, while the thiazole ring makes a dihedral angle of 23.07 (12° with the benzene ring. The molecular structure is stabilized by an intramolecular C—H...O hydrogen bond, which generates an S(6 ring motif. The crystal packing is consolidated by intermolecular N—H...O hydrogen bonds, which link the molecules into chains parallel to [100], and by C—H...π and π–π [centroid–centroid distance = 3.4954 (15 Å] stacking interactions.

  5. 2-Ethoxy-6-[(3-methylpyridin-2-yliminomethyl]phenol

    Directory of Open Access Journals (Sweden)

    Xiao-Ling Yuan

    2011-05-01

    Full Text Available The title Schiff base compound, C15H16N2O2, was prepared by the condensation reaction of equimolar quantities of 3-ethoxysalicylaldehyde with 2-amino-3-methylpyridine in methanol. The dihedral angle between the benzene ring and the pyridine ring is 2.6 (2° and an intramolecular O—H...N hydrogen bond generates an S(6 ring.

  6. High-temperature resistivity of URh 2Ge 2

    Science.gov (United States)

    Otop, A.; Maksimov, I.; Scheidt, E.-W.; Mydosh, J. A.; Süllow, S.

    2006-05-01

    We present a study of the anomalous resistivity, with a large ρ and negative temperature coefficient dρ/dT, of the moderately disordered uranium heavy fermion compound URh 2Ge 2. We establish that the anomalous behavior persist up to high temperatures, i.e., 620 K ≈2ΘD, with ΘD as the Debye temperature. Our finding reinforces the clear comparison of the transport behavior of URh 2Ge 2 to that of metallic glasses.

  7. One novel transcript of human hereditary multipleexostoses 2 (EXT2)

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    The encoding sequence of human hereditary multiple exostoses gene EXT2.1 is 30 bp longer than EXT2, and they differ in a sequence of 90 base pairs. In order to clarify EXT2.1 structure, this 90 bp sequence was analyzed with the Human Sequence Draft, a database provided by Celera Genomics. The result shows that EXT2.1 is a novel transcript of EXT2 gene, suggesting a rare event of alternative splicing.

  8. Main sup 2 sup 0 sup , sup 2 sup 2 Ne giant dipole resonance decay channel and sup 2 sup 2 Ne GDR isospin splitting

    CERN Document Server

    Varlamov, V V

    2002-01-01

    The published data on various photonuclear reactions on sup n sup a sup t sup , sup 2 sup 0 sup , sup 2 sup 2 Ne have been analyzed aiming at investigation of the peculiarities of the sup 2 sup 0 sup , sup 2 sup 2 Ne GDR proton and neutron decay channels. The data on the isotope abundances and reaction energy threshold have been used to separate the cross sections of the reactions sup 2 sup 0 sup , sup 2 sup 2 Ne[(gamma, n) + (gamma, np)] and sup 2 sup 0 sup , sup 2 sup 2 Ne[(gamma, p) + (gamma, np)] into the cross sections of the one-nucleon (gamma, n) and (gamma, p) reactions and (gamma, np) reactions. The (gamma, np)-reaction cross sections have been evaluated for both isotopes sup 2 sup 0 sup , sup 2 sup 2 Ne. The sup 2 sup 0 sup , sup 2 sup 2 Ne(gamma, n) sup 1 sup 9 sup , sup 2 sup 1 Ne and sup 2 sup 0 sup , sup 2 sup 2 Ne(gamma, p) sup 1 sup 9 sup , sup 2 sup 1 F reaction cross sections have been evaluated for E subgamma = 16.0-28.0 MeV and the sup 2 sup 0 sup , sup 2 sup 2 Ne(gamma, np) sup 1 sup 8 su...

  9. Cytosolic phospholipase A2 modulates TLR2 signaling in synoviocytes.

    Directory of Open Access Journals (Sweden)

    Randi M Sommerfelt

    Full Text Available Rheumatoid arthritis (RA is an autoimmune disease characterized by chronic synovitis leading to destruction of cartilage and bone. PLA2 enzymes are key players in inflammation regulating the release of unsaturated fatty acids such as arachidonic acid (AA, a precursor of pro-inflammatory eicosanoids. Several lines of evidence point to toll-like receptors (TLRs as drivers of synovitis and joint destruction in RA. However, few studies have addressed the implication of PLA2 activity downstream TLR activation in the synovium. Here, we aimed to characterize PLA2 enzyme involvement in TLR2-induced signaling in synovial fibroblast-like cells. TLRs1-7 and a range of sPLA2, iPLA2 and cPLA2 enzymes were found to be transcriptionally expressed in cultured synoviocytes. Activation of TLR2/1 and TLR2/6 led to phosphorylation of cPLA2α at Ser505, and induced AA release and PGE2 production; effects that were attenuated by cPLA2α inhibitors. In contrast, sPLA2 inhibitors did not affect AA or PGE2 release. cPLA2α inhibitors furthermore attenuated TLR-induced expression of IL-6, IL-8 and COX2. COX1/2 inhibitors attenuated TLR2/6-induced IL-6 transcription and protein production comparable to cPLA2α inhibition. Moreover, exogenously PGE2 added alone induced IL-6 production and completely rescued IL-6 transcription when added simultaneously with FSL-1 in the presence of a cPLA2α inhibitor. Our results demonstrate for the first time that cPLA2α is involved in TLR2/1- and TLR2/6-induced AA release, PGE2 production and pro-inflammatory cytokine expression in synoviocytes, possibly through COX/PGE2-dependent pathways. These findings expand our understanding of cPLA2α as a modulator of inflammatory molecular mechanisms in chronic diseases such as RA.

  10. Luminescence properties of Pb2+- and Mn2+-activated CdI2 crystals

    International Nuclear Information System (INIS)

    The luminescence properties of CdI2, CdI2:Pb2+, CdI2:Mn2+, and CdI2:(Pb2+,Mn2+) crystals have been studied at temperatures from 85 to 295 K under optical and X-ray excitation. Analysis of new and earlier spectroscopic data suggests that the 560-nm luminescence of CdI2:Pb2+ and CdI2:(Pb2+,Mn2+) crystals under excitation on the long-wavelength component of the A absorption band of Pb2+ centers is due to Pb2+-bound anion excitons. The 640- to 660-nm emission of these crystals is attributable to α centers. The manganese luminescence in the co-doped material originates from both intra-center Mn2+ excitations and a sensitized process due to energy transfer from the host and Pb2+-related centers. The mechanisms of recombination and energy transfer processes in cadmium iodide crystals co-doped with Pb2+ and Mn2+ are discussed

  11. India Co2 Emissions

    Science.gov (United States)

    Sharan, S.; Diffenbaugh, N. S.

    2010-12-01

    created a balance in between the “developed” and developing countries. If India was producing the same amounts of emissions per capita as the it would have a total of 20 billion metric tons of CO2 emissions annually.

  12. AGC-2 Disassembly Report

    Energy Technology Data Exchange (ETDEWEB)

    William Windes

    2014-05-01

    The Next Generation Nuclear Plant (NGNP) Graphite Research and Development (R&D) Program is currently measuring irradiated material properties for predicting the behavior and operating performance of new nuclear graphite grades available for use within the cores of new very high temperature reactor designs. The Advanced Graphite Creep (AGC) experiment, consisting of six irradiation capsules, will generate irradiated graphite performance data for NGNP reactor operating conditions. The AGC experiment is designed to determine the changes to specific material properties such as thermal diffusivity, thermal expansion, elastic modulus, mechanical strength, irradiation induced dimensional change rate, and irradiation creep for a wide variety of nuclear grade graphite types over a range of high temperature, and moderate doses. A series of six capsules containing graphite test specimens will be used to expose graphite test samples to a dose range from 1 to 7 dpa at three different temperatures (600, 900, and 1200°C) as described in the Graphite Technology Development Plan. Since irradiation induced creep within graphite components is considered critical to determining the operational life of the graphite core, some of the samples will also be exposed to an applied load to determine the creep rate for each graphite type under both temperature and neutron flux. All six AGC capsules in the experiment will be irradiated in the Advanced Test Reactor (ATR). AGC-1 and AGC-2 will be irradiated in the south flux trap and AGC-3–AGC-6 will be irradiated in the east flux trap. The change in flux traps is due to NGNP irradiation priorities requiring the AGC experiment to be moved to accommodate Fuel irradiation experiments. After irradiation, all six AGC capsules will be cooled in the ATR Canal, sized for shipment, and shipped to the Materials and Fuels Complex (MFC) where the capsule will be disassembled in the Hot Fuel Examination Facility (HFEF). During disassembly, the metallic

  13. Xenopatients 2.0

    Science.gov (United States)

    Menendez, Javier A; Alarcón, Tomás; Corominas-Faja, Bruna; Cuyàs, Elisabet; López-Bonet, Eugeni; Martin, Ángel G; Vellon, Luciano

    2014-01-01

    stemness factors following the activation of phenotypic copies of specific cancer diseases might crucially evaluate a “reprogramming cure” for cancer. A new era of xenopatients 2.0 generated via nuclear reprogramming of the epigenetic landscapes of patient-derived cancer genomes might revolutionize the current personalized translational platforms in cancer research. PMID:24406535

  14. COPOLYMERIZATION OF ETHYLENE AND PROPYLENE WITH (CpCH2CH2CH=CH2)2MCl2 (M = Zr, Hf) AND Cp2ZrCl2 CATALYSTS

    Institute of Scientific and Technical Information of China (English)

    Hui Yao; Shi-jing Xiao

    2000-01-01

    (CpCH2CH2CH = CH2)2MCl2(M = Zr, Hf)/MAO and Cp2ZrCl2/MAO (Cp = cyclopentadienyl; MAO =methylaluminoxane) catalyst systems have been compared for ethylene copolymerization to investigate the influence of the ligand and transition metal on the polymerization activity and copolymer properties. For both CH2CH2CH=CH2 substituted catalysts the catalytic activity decreased with increasing propene concentration in the feed. The activity of the hafnocene catalyst was 6~8 times lower than that of the analogous zirconocene catalyst, 13C NMR analysis showed that the copolymer obtained using the unsubstituted catalyst Cp2ZrCl2 has greater incorporatien of propene than those produced by CH2CH2CH=CH2 substituted Zr and Hf catalysts. The melting point, crystallinity and the viscosity-average molecular weight of the copolymer decreased with an increase of propene concentration in the feed. Both CH2CH2CH =CH2 substituted Zr and Hf catalysts exhibit little or no difference in the melting point and crystallinity of the produced copolymers. However,there are significant differences between the two zirconocene catalysts. The copolymer produced by Cp2ZrCl2 catalyst have much lower Tm and Xc than those obtained with the (CpCH2CH2CH=CH2)2ZrCl2 catalyst. The density and molecular weight of the copolymer decreased in the order: (CpCH2CH2CH=CH2)2HfCl2>(CpCH2CH2CH=CH2)2ZrCl2>Cp2ZrCl2. The kinetic behavior of copolymerizaton with Hf catalyst was found to be different from that with Zr catalyst.

  15. Crystal and molecular structure of 2,2'-(quinoxaline-2,3-diyl)dipyridinium dinitrate (H2 L)(NO3)2

    Science.gov (United States)

    Egorova, O. A.; Polyakova, I. N.; Sergienko, V. S.; Davydov, V. V.

    2016-07-01

    The crystal structure of 2,2'-(quinoxaline-2,3-diyl)dipyridinium dinitrate (H2 L)(NO3)2 is studied by X-ray diffraction ( T = 150 K, R1 = 0.0467). The H2 L 2+ cation is located on the twofold rotation axis and connected with two NO3 - anions by strong N-H···O hydrogen bonds. Planar quinoxaline fragments of cations form stacks with the interplanar spacing of 3.308 Å. The structure of the diprotonated H2 L 2+ cation is compared with those of the monoprotonated H2 L 2+ cation and neutral L molecule.

  16. Sur l'\\'equation $X^2-\\varepsilon_2\\varepsilon_{p_1p_2}\\varepsilon_{2p_1p_2}=0$

    OpenAIRE

    Azizi, Abdelmalek; Zekhnini, Abdelkader; Taous, Mohammed

    2015-01-01

    Let $p_1\\equiv p_2\\equiv5 \\pmod8$ be prime numbers such that $\\left(\\frac{p_1}{p_2}\\right)=-1$. Let $\\mathbb{L}=Q(\\sqrt2, \\sqrt{p_1p_2})$ Our goal is to resolve the equation $X^2-\\varepsilon_2\\varepsilon_{p_1p_2}\\varepsilon_{2p_1p_2}=0$ in $\\mathbb{L}$, where $\\varepsilon_j$ are fundamental units of real quadratic subfields of $Q(\\sqrt2, \\sqrt{p_1p_2})$.

  17. IR Li2Ga2GeS6 nanocrystallized GeS2-Ga2S3-Li2S electroconductive chalcogenide glass with good nonlinearity

    OpenAIRE

    Liu, Qiming; Zhang, Peng

    2014-01-01

    GeS2-Ga2S3-Li2S electroconductive glasses were prepared by the conventional melt-quenching method through carefully controlling the heating rate. Comparing with the reference of glass-forming region, our investigated GeS2-Ga2S3-Li2S system was extended to the cation ratio of 0–20% Li with around 40% Ga. GeS2-Ga2S3-Li2S glass-ceramics containing IR Li2Ga2GeS6 nonlinear nanocrystals were obtained by the more carefully controlled heating rate. Its optical nonlinearity was investigated by the Mak...

  18. Grignard-mediated reduction of 2,2,2-trichloro-1-arylethanones.

    Science.gov (United States)

    Essa, Ali H; Lerrick, Reinner I; Çiftçi, Eçe; Harrington, Ross W; Waddell, Paul G; Clegg, William; Hall, Michael J

    2015-05-28

    2,2,2-Trichloro-1-aryl-ethanones can be reduced by RMgX to the corresponding 2,2-dichloro-1-arylethen-1-olates and trapped with a range of electrophiles resulting in either reduction, reduction/aldol, reduction/Claisen condensation or reduction/aldol-Tishchenko products. In addition we demonstrate that 2,2-dichloro-1-arylethen-1-olates undergo counter-ion controlled Darzens condensations, which can be followed by a thermal rearrangement as a route to 1,3-diaryl-3-chloropropane-1,2-diones. PMID:25906144

  19. By Regulating Mitochondrial Ca2+-Uptake UCP2 Modulates Intracellular Ca2+.

    Directory of Open Access Journals (Sweden)

    Lukas Jaroslaw Motloch

    Full Text Available The possible role of UCP2 in modulating mitochondrial Ca2+-uptake (mCa2+-uptake via the mitochondrial calcium uniporter (MCU is highly controversial.Thus, we analyzed mCa2+-uptake in isolated cardiac mitochondria, MCU single-channel activity in cardiac mitoplasts, dual Ca2+-transients from mitochondrial ((Ca2+m and intracellular compartment ((Ca2+c in the whole-cell configuration in cardiomyocytes of wild-type (WT and UCP2-/- mice.Isolated mitochondria showed a Ru360 sensitive mCa2+-uptake, which was significantly decreased in UCP2-/- (229.4±30.8 FU vs. 146.3±23.4 FU, P0.05 and transsarcolemmal Ca2+-influx was inhibited suggesting a possible compensatory mechanism. Additionally, we observed an inhibitory effect of ATP on mCa2+-uptake in WT mitoplasts and (Ca2+m of cardiomyocytes leading to an increase of (Ca2+c while no ATP dependent effect was observed in UCP2-/-.Our results indicate regulatory effects of UCP2 on mCa2+-uptake. Furthermore, we propose, that previously described inhibitory effects on MCU by ATP may be mediated via UCP2 resulting in changes of excitation contraction coupling.

  20. Main: PR2GCNT [PLACE

    Lifescience Database Archive (English)

    Full Text Available tream regions of group 2 PR protein genes (beta-1,3-glucanase (GLN2), chitinase (CHN17, CHN50)) of tobacco (...PR2GCNT S000089 10-May-1998 (last modified) kehi GC element conserved in the 5' ups...N.t.); tobacco; group 2; pr-protein; GC element; chitinase; beta-1,3-glucanase; tobacco (Nicotiana tabacum); TAARAGCCGCC ...