2,316 research outputs found
Supersymmetry breaking branes on solvmanifolds and de Sitter vacua in string theory
We consider IIA compactifications on solvmanifolds with O6/D6 branes and
study the conditions for obtaining de Sitter vacua in ten dimensions. While
this is a popular set-up for searching de Sitter vacua, we propose a new method
to include supersymmetry breaking sources. For space-time filling branes
preserving bulk supersymmetry, the energy density can easily be extremized with
respect to all fields, thanks to the replacement of the DBI action by a
pullback of a special form given by a pure spinor. For sources breaking bulk
supersymmetry, we propose to replace the DBI action by the pullback of a more
general polyform, which is no longer pure. This generalization provides
corrections to the energy-momentum tensor which give a positive contribution to
the cosmological constant. We find a de Sitter solution to all (bulk and
world-volume) equations derived from this action. We argue it solves the
equations derived from the standard source action. The paper also contains a
review of solvmanifolds.Comment: 57 pages, 3 figures. Important additions (concerning the validity of
our solution in string theory); version to appear in JHE
Do MDGs Matter? India's Development Trajectory in the 21st Century
Current discourse on post?2015 development goals needs to be situated in the context of the influence of MDGs in shaping national policies and programmes. In this article, India's development trajectory and its impacts are critically analysed to demonstrate the near absence of influence of MDGs discourse on Indian development planning or outcomes. The analysis also focuses on the political economy of India's development trajectory and identifies absence of governance reforms as the key deficit in meaningful impacts on the lives of people in India. In sharp contrast to the High Level Panel's recommendations on post?2015, the author proposes an alternative set of goals focusing on reforming governance in India
Effects of Curing and Humidity on the Storage Stability of Yams (D. SSP)
An experimental study was made of the hygroscopic characteristics as well as the response of yam (D.SPP) tuber to a curing treatment prior to storage. The results indicate that the yam tuber possesses a sigmoidal isotherm dominated by the local isotherm LI – II. The yam tissue responds favorably to proper curing conditions, which generated a well – developed periderm that is impermeable to moisture and resistant to penetration by pathogens. Microscopic studies showed that interruption of tissue continuity by mechanical injury stimulates physical and chemical processes in the cells of which structural re-differentiation is one visible expression. In 20 weeks, properly cured samples lost about 28 per cent total weight while tubers which did not receive any treatment lost as much as 41 per cent of initial weight in the same time interval
ASUHAN KEBIDANAN PADA NEONATUS CUKUP BULAN KECIL MASA KEHAMILAN BAYI BERAT LAHIR RENDAH (BBLR) DENGAN ASFIKSIA NEONATORUM DI RUANG PERINATOLOGI RSUD Prof. DR. W. Z. JOHANNES KUPANG TANGGAL 03 - 15 April 2017.
Latar Belakang: Bayi Berat Lahir Rendah (BBLR) adalah bayi yang mempunyai berat badan lahir kurang dari 2500 gram. BBLR yang tidak bernapas spontan segera setelah lahir dikategorikan lahir dengan asfiksia neonaturum dan harus segera dilakukan langkah awal resusitasi. Kelahiran BBLR dengan asfiksia neonaturum membutuhkan kecepatan dan ketrampilan resusitasi pada waktu bayi lahir. Faktor penyebab terjadinya BBLR adalah status gizi ibu, umur ibu saat hamil, umur kehamilan ibu, kehamilan ganda, tingkat pendidikan, penyakit ibu (anemia, jantung, hipertensi, pre-eklampsi dan eklampsi, diabetes, carsinoma). Sedangkan penyebab asfiksia neonaturum adalah BBLR, gangguan aliran pada tali pusat, penyakit yang diderita ibu, adanya hipoksia pada janin, dan bayi kembar.
Tujuan: Mampu memberikan asuhan kebidanan pada bayi berat lahir rendah dengan Asfiksia Neonatorum menggunakan asuhan kebidanan menurut 7 langkah Varney.
Metode: Metode yang digunakan deskriptif. Studi kasus ini dilaksanakan pada tanggal 03 – 15 April 2017 di Ruang Perinatologi RSUD Prof. W. Z. Johannes Kupang. Populasi adalah semua bayi berat lahir rendah dengan Asfiksia yang di rawat di Ruang Perinatologi RSUD Prof. W. Z. Johannes Kupang. Sampel di ambil secara purposive sampling yaitu 1 bayi BBLR dengan Asfiksia di Ruang Perinatologi RSUD Prof. W. Z. Johannes Kupang dengan menggunakan data primer dan data skunder.
Pembahasan: Berdasarkan data yang diperoleh, kasus ini didapati usia kehamilan ibu 38-39 minggu, partus spontan pervaginam pada tanggal 07 April 2017, bayi lahir merintih, tonus otot lemah, warna kulit merah muda, jenis kelamin perempuan. Pada kasus juga didapatkan ibu A.K memiliki riwayat anemia selama hamil. Selain itu ibu A.K memiliki riwayat hamil kembar sehingga beresiko melahirkan BBLR dengan asfiksia.
Simpulan: Telah dilakukan asuhan kebidanan selama 7 hari pada bayinya dengan hasil keadaan umum bayi baik, asfiksia teratasi, hipotermi tidak terjadi serta berat badan bertambah. Setelah dievaluasi bayi tidak terjadi hal-hal yang menjadi komplikasi dari asuhan tersebut dan ibu merasa senang dengan keadaan bayinya dan bayi dipulangkan dalam keadaan sehat
Use of hydrogen peroxide and percarbonate to treat chlorinated aromatic hydrocarbon-contaminated soil
This study compared treatment methods that utilised a liquid carrier of hydrogen peroxide and a solid carrier, percarbonate, for p-dichlorobenzene, p-chloro-m-cresol and p-chlorothymol degradation in the soil. The targeted chlorinated aromatic contaminants in the soil degraded to a certain level when treated with the liquid hydrogen peroxide, but the removal efficacy was not dependent on the dosage. In contrast, an increase in the percarbonate dosage enhanced the contaminant removal. Supplementary ferrous iron was more effective for the treatment that employed the liquid carrier of hydrogen peroxide than the treatment employing the solid carrier. Although acidic pH conditions (initial pH of 2.5) favoured contaminant degradation using liquid hydrogen peroxide, the treatment involving percarbonate resulted in more effective contaminant removal without any soil pH preadjustment. Therefore, the solid carrier of hydrogen peroxide, percarbonate, was concluded to be an effective alternative to the liquid carrier, resulting in greater contaminant removal at natural soil pH values
Swajaldhara: ‘Reversed’ Realities in Rural Water Supply in India
For the last two decades and more, nations, international organisations and civil society, both local and global, have been rallying for the cause of ‘efficient’ and ‘equitable’ water supply and distribution. To this end, the New Delhi Statement, a precursor to the Dublin Statement, in many ways marks the first step in reforming the water sector. This article explores how ideas of community ownership and participation lauded in the New Delhi Statement and reiterated in the Dublin Statement later translate into practice when they meet the complex sociopolitical and institutional realities at the ground. It locates the genesis of Swajaldhara, the flagship rural water reform programme in India, the origin of which can be traced to the Delhi?Dublin configuration and shows how a success model became a story of poor implementation defined in the language of ‘gaps and slippages’ or ‘policy reversals’. It argues further that the objective of ‘Some for All’ still remains a target yet to be achieved in many parts of the country. The work underlines the disconnect between the global paradigms and local manifestations of such ideas and investigates the reasons for the same. Based on field research in two villages of the Indian state of Uttar Pradesh, the article unpacks the processes that lead to policy?practice dichotomy
Sustainability of Domestic Sewage Sludge Disposal
Activated sludge is now one of the most widely used biological processes for the treatment of wastewaters from medium to large populations. It produces high amounts of sewage sludge that can be managed and perceived in two main ways: as a waste it is discharged in landfill, as a fertilizer it is disposed in agriculture with direct application to soil or subjected to anaerobic digestion and composting. Other solutions, such as incineration or production of concrete, bricks and asphalt play a secondary role in terms of their degree of diffusion. The agronomical value of domestic sewage sludge is a proved question, which may be hidden by the presence of several pollutants such as heavy metals, organic compounds and pathogens. In this way, the sustainability of sewage sludge agricultural disposal requires a value judgment based on knowledge and evaluation of the level of pollution of both sewage sludge and soil. The article analyzed a typical Italian case study, a water management system of small communities, applying the criteria of evaluation of the last official document of European Union about sewage sludge land application, the "Working Document on Sludge (3rd draft, 2000)". The report brought out good sewage sludge from small wastewater treatment plants and soils quality suggesting a sustainable application
Up-Flow Anaerobic Sludge Blanket (UASB) Technology for Energy Recovery: A Review on State-of-the-Art and Recent Technological Advances
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