198,765 research outputs found
Usman Khalid, Muhammad Shafiullah, Sajid M. Chaudhry: Súlyosbítja-e a konfliktus az energiaszegénységet?3
No full textSzerzők és a kutatás célja
A tanulmányt az Egyesült Arab Emírségek Egyetemén, a Bangladesi Brac Egyetemen, valamint az egyesült királyságbeli Aston Business Schoolban, a gazdaságtan és pénzügy
területén dolgozó Usman Khalid, Muhammad Shafiullah és Sajid M. Chaudhry készítette.
A cikk fő célja, hogy megvizsgálja a belső konfliktusok és az energiaszegénység közötti kapcsolatot, különös tekintettel arra, hogy a belső menekültek helyzete milyen hatással van az energiaellátásra
Pulsed triple electron resonance (TRIER) for dipolar correlation spectroscopy
No full textPribitzer S, Sajid M, Huelsmann M, Godt A, Jeschke G. Pulsed triple electron resonance (TRIER) for dipolar correlation spectroscopy. JOURNAL OF MAGNETIC RESONANCE. 2017;282:119-128.A new pulse sequence is presented for correlating dipolar frequencies in molecules with more than two paramagnetic centers. This triple electron resonance experiment (TRIER) is an extension the double electron-electron resonance (DEER) experiment, which is widely used for distance determination in the nanometer range. We use linear chirp pulses with smoothed edges to create a refocused observer echo, and two hyperbolic secant pulses with distinct excitation windows to excite two other subsets of spins. These pumped spins are coupled to the observed spin through the dipole-dipole interaction. A two-dimensional dipolar modulation pattern is recorded by variation of the position of the two pump pulses. By two-dimensional Fourier transform of the echo integral, a plot is obtained that correlates dipolar frequencies within the same molecule. Such correlation patterns can be used in conjunction with DEER, with which distance distributions are usually determined for several doubly labeled molecules with different spin-labeling sites. In the presence of two conformers, DEER traces give two distances and assignment to an individual conformer is not trivial and usually requires a trial and error approach. TRIER can potentially provide the missing connection between distances as correlations between dipolar frequencies. (C) 2017 Elsevier Inc. All rights reserved
Conformationally Unambiguous Spin Labeling for Distance Measurements
No full textSajid M, Jeschke G, Wiebcke M, Godt A. Conformationally Unambiguous Spin Labeling for Distance Measurements. CHEMISTRY-A EUROPEAN JOURNAL. 2009;15(47):12960-12962
Customer dissatisfaction and defection: The hidden costs of downsizing
No full textDownsizing has been the subject of a good deal of research. Very little research, however, has examined the impact of downsizing on customers. Using a case study approach with a Fortune 100 company, we measured the attitudes, in a telephone survey, of 534 B2B service customers before a significant downsizing event and 994 customers afterwards. Our findings show that a significant downsizing event has an immediate and negative impact on customer satisfaction levels and on projected retention rates. This will lead to a direct, negative financial impact on the service provider due to a loss of expected future customer revenue. The lost revenue substantially offsets the short term labor cost savings from the downsizing
Newly formulated, protein quality-enhanced, extruded sorghum-, cowpea-, corn-, soya-, sugar- and oil-containing fortified-blended foods lead to adequate vitamin A and iron outcomes and improved growth compared with non-extruded CSB+ in rats
No full textCitation: Delimont, N. M., Fiorentino, N. M., Opoku-Acheampong, A. B., Joseph, M. V., Guo, Q., Alavi, S., & Lindshield, B. L. (2017). Newly formulated, protein quality-enhanced, extruded sorghum-, cowpea-, corn-, soya-, sugar- and oil-containing fortified-blended foods lead to adequate vitamin A and iron outcomes and improved growth compared with non-extruded CSB+ in rats. Journal of Nutritional Science. doi:10.1017/jns.2017.15Corn and soyabean micronutrient-fortified-blended foods (FBF) are commonly used for food aid. Sorghum and cowpeas have been suggested as alternative commodities because they are drought tolerant, can be grown in many localities, and are not genetically modified. Change in formulation of blends may improve protein quality, vitamin A and Fe availability of FBF. The primary objective of this study was to compare protein efficiency, Fe and vitamin A availability of newly formulated extruded sorghum-, cowpea-, soya- and corn-based FBF, along with a current, non-extruded United States Agency for International Development (USAID) corn and soya blend FBF (CSB+). A second objective was to compare protein efficiency of whey protein concentrate (WPC) and soya protein isolate (SPI) containing FBF to determine whether WPC inclusion improved outcomes. Eight groups of growing rats (n 10) consumed two white and one red sorghum–cowpea (WSC1 + WPC, WSC2 + WPC, RSC + WPC), white sorghum–soya (WSS + WPC) and corn–soya (CSB14 + WPC) extruded WPC-containing FBF, an extruded white sorghum–cowpea with SPI (WSC1 + SPI), non-extruded CSB+, and American Institute of Nutrition (AIN)-93G, a weanling rat diet, for 4 weeks. There were no significant differences in protein efficiency, Fe or vitamin A outcomes between WPC FBF groups. The CSB+ group consumed significantly less food, gained significantly less weight, and had significantly lower energy efficiency, protein efficiency and length, compared with all other groups. Compared with WSC1 + WPC, the WSC1 + SPI FBF group had significantly lower energy efficiency, protein efficiency and weight gain. These results suggest that a variety of commodities can be used in the formulation of FBF, and that newly formulated extruded FBF are of better nutritional quality than non-extruded CSB+. Copyright © The Author(s) 2017 This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited
Identifying the Potentials for Charge Transport Layers Free N-P Homojunction-Based Perovskite Solar Cells
No full textKhan, Suliman/0000-0003-0069-4025; Sajid, Sajid/0000-0002-1165-1365; Park, Jongee/0000-0003-1415-6906; Khan, Danish/0000-0002-6754-9757Perovskite solar cells (PSCs) with no charge transport layers (CTLs) could be one of the major device architectures for the production of simple and low-cost devices. However, CTLs-free PSCs based on n-p homojunction have yet to show high power conversion efficiency (PCE), which is most likely due to inadequate light-and charge-management in the p-type perovskite. The device operation is examined using Solar Cell Capacitance Simulator (SCAPS)-software, and a novel n-p homojunction design is proposed to attempt efficient CTLs-free PSCs. Several aspects of p-type layer that can affect device performance, such as acceptor density, photon harvesting capability, defects density, and resistances to the transport of charge-carriers are scrutinized and adjusted. Furthermore, the effects of different work-functions of metal electrodes are examined. A suitable acceptor concentration is required for oriented charge transport. It is determined that a p-type perovskite with a thickness of 0.3 mu m is advantageous for high performance. A metal electrode with a high work-function is essential for efficient device. Consequently, a PCE of 15.60% is obtained with an optimal defect density of E15 cm(-3), indicating that n-p homojunction-based CTLs-free PSCs are promising since they simplify the device design and fabrication process while retaining an acceptable PCE
Towards single-dot occupancy in directed self-assembly of InAs/GaAs quantum dots on nanoimprint lithography patterns
No full textDr. Duane M. Jackson, Morehouse College, July 2011
No full textThis video is a conversation with Dr. Duane M. Jackson. Dr. Jackson talks about his paper, "Recall and the Serial Position Effect: The Role of Primacy and Recency on Accounting Students' Performance." Jackie Daniel, AUC Woodruff Library, is the interviewer
Understanding the causes of defection among satisfied B2B service customers
No full textMany research studies conclude that satisfaction is strongly and positively related to repurchase intentions and loyalty behaviour. However, companies are often faced with the perplexing question of why some customers, who are satisfied, still switch suppliers given the right circumstances. To answer this question, an exploratory research study was conducted in the facilities-management industry with business-to-business service customers. The study was conducted in two stages: an exploratory stage that focused on the industry as a whole, and a confirmatory stage that focused on lost customers from one specific company. It was found that switching motives and actual reasons for switching are quite different. Customers, despite being satisfied, are more likely to switch suppliers for price reasons than they originally stated
"Reflections on the subject of Emigration from Europe with a view to Settlement in the United States" By M. Carey.
No full text"Reflections on the subject of Emigration from Europe with a view to Settlement in the United States: containing bried sketches of the moral and political character of those states.
By M. Carey, member of the American philosophical, and of the American Antiquarian Society, and author of The Olive Branch, Cindiciae Hibernicae, essays on banking, on political economy, and on internal improvement.
To which are now added the English editor's comments on the subject; together with Important Advice to Emigrants, and Cautions Against Impositions Practiced in the Outports
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