cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Ionized Gas in Nearby Galaxies as Traced by the [NII] 122 and 205 μm Transitions
Creators: name: Herrera-Camus, R.
name: Bolatto, A.
name: Smith, J. D.
name: Draine, B.
name: Pellegrini, E.
name: Wolfire, M.
name: Croxall, K.
name: de Looze, I.
name: Calzetti, D.
name: Kennicutt, R.
name: Crocker, A.
name: Armus, L.
name: van der Werf, P.
name: Sandstrom, K.
name: Galametz, M.
name: Brandl, B.
name: Groves, B.
name: Rigopoulou, D.
name: Walter, F.
name: Leroy, A.
name: Boquien, M.
name: Tabatabaei, F. S.
name: Beirao, P.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The [NII] 122 and 205 μm transitions are powerful tracers of the ionized gas in the interstellar medium. By combining data from 21 galaxies selected from the Herschel KINGFISH and Beyond the Peak surveys, we have compiled 141 spatially resolved regions with a typical size of ~1 kiloparsec, with observations of both [NII] far-infrared lines. We measure [NII] 122/205 line ratios in the ~0.6-6 range, which corresponds to electron gas densities $n_e$~1-300 cm$^{-3}$, with a median value of $n_e$=30 cm$^{-3}$. Variations in the electron density within individual galaxies can be as a high as a factor of ~50, frequently with strong radial gradients. We find that $n_e$ increases as a function of infrared color, dust-weighted mean starlight intensity, and star formation rate surface density ($Σ_{SFR}$). As the intensity of the [NII] transitions is related to the ionizing photon flux, we investigate their reliability as tracers of the star formation rate (SFR). We derive relations between the [NII] emission and SFR in the low-density limit and in the case of a log-normal distribution of densities. The scatter in the correlation between [NII] surface brightness and $Σ_{SFR}$ can be understood as a property of the $n_e$ distribution. For regions with $n_e$ close to or higher than the [NII] line critical densities, the low-density limit [NII]-based SFR calibration systematically underestimates the SFR since [NII] emission is collisionally quenched. Finally, we investigate the relation between [NII] emission, SFR, and $n_e$ by comparing our observations to predictions from the MAPPINGS-III code.
description: 18 pages, 9 figures, accepted for publication in The Astrophysical Journal
New Inkjet Solution for Direct Printing of Local Diffusion Barriers on Solar Cells
Creators: name: Köhler, I.
name: Stockum, W.
name: Meijer, A.
name: Doll, O.
name: James, M.
name: Plummer, E.
name: Brookes, P.
name: Patterson, K.
name: May, P.
name: Qu, H.
name: Bock, R.
name: Gatz, S.
name: Prütz, M.
name: Terheiden, B.
name: Plagwitz, H.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Mono- and Multicrystalline Silicon Cells and Materials, Processing Technology of

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 1352-1356
description: The realization of high-efficiency silicon solar cell designs like rear contacts, local back surface fields or selective emitters in industrial solar cell production, depends on the existence of cost-effective processing techniques. This report introduces the inkjet-ready isishape SolarResistTM diffusion barrier solution. It can be used to directly print diffusion barrier layers for the local formation of highly-doped regions without additional structuring. Thin films of 190 nm thickness work as a barrier against industrially relevant phosphorus diffusions. No adverse effect on the charge carrier lifetime is observed. Printed line widths of 90 μm are achieved, and the minimum gap width between lines is 50 μm.
Differentiated Price Experience Curves as Evaluation Tool for Judging the Further Development of Crystalline Silicon and Thin Film PV Solar Electricity Products
Creators: name: Hoffmann, W.
name: Wieder, S.
name: Pellkofer, T.
Publisher: name: WIP-Munich
Year: 2009
Subjects: PV Deployment
Enablers for PV Development and Benefits of PV

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 4387-4394
description: Decades of research have demonstrated how several industries related to PV solar – semiconductors
and flat panel displays, among others – have generated steady and predictable declines in the “Price Experience
Curve” (PEC) and “Price Experience Factor” (PEF). This paper analyzes factors that apply to PV solar in order to
project expected cost and price declines from the present towards 2020. Thin film technology offers a somewhat
greater potential decline of module cost and price compared to crystalline silicon technology, due to its technological
similarity to flat panel displays and the cost-cutting potential of large-area substrates. However, the higher efficiency
of c-Si PV modules may offset that advantage when overall system cost and price is considered. Ultimately, the
decline for both cost curves should prove to be quite significant and therefore enable increased and widespread
adoption of PV technology for a variety of applications.
Is Routine Preoperative Esophagogastroduodenoscopy Prior to Bariatric Surgery Mandatory? Systematic Review and Meta-analysis of 10,685 Patients
Creators: name: El Ansari, Walid
name: El-Menyar, Ayman
name: Sathian, Brijesh
name: Al-Thani, Hassan
name: Al-Kuwari, Mohammed
name: Al-Ansari, Abdulla
Publisher: name: Manara - Qatar Research Repository
Year: 2022
Subjects: Medical biochemistry and metabolomics
Nutrition and dietetics

description: Background This systematic review and meta-analysis searched, retrieved and synthesized the evidence as to whether preoperative esophagogastroduodenoscopy (p-EGD) should be routine before bariatric surgery (BS). Methods Databases searched for retrospective, prospective, and randomized (RCT) or quasi-RCT studies (01 January 2000–30 April 2019) of outcomes of routine p-EGD before BS. STROBE checklist assessed the quality of the studies. P-EGD findings were categorized: Group 0 (no abnormal findings); Group 1 (abnormal findings that do not necessitate changing the surgical approach or postponing surgery); Group 2 (abnormal findings that change the surgical approach or postpone surgery); and Group 3 (findings that signify absolute contraindications to surgery). We assessed data heterogeneity and publication bias. Random effect model was used. Results Twenty-five eligible studies were included (10,685 patients). Studies were heterogeneous, and there was publication bias. Group 0 comprised 5424 patients (56%, 95% CI: 45–67%); Group 1, 2064 patients (26%, 95% CI: 23–50%); Group 2, 1351 patients (16%, 95% CI: 11–21%); and Group 3 included 31 patients (0.4%, 95% CI: 0–1%). Conclusion For 82% of patients, routine p-EGD did not change surgical plan/ postpone surgery. For 16% of patients, p-EGD findings necessitated changing the surgical approach/ postponing surgery, but the proportion of postponements due to medical treatment of H Pylori as opposed to “necessary” substantial change in surgical approach is unclear. For 0.4% patients, p-EGD findings signified absolute contraindication to surgery. These findings invite a revisit to whether p-EGD should be routine before BS, and whether it is judicious to expose many obese patients to an invasive procedure that has potential risk and insufficient evidence of effectiveness. Further justification is required.Other Information Published in: Obesity Surgery
 License: https://creativecommons.org/licenses/by/4.0
See article on publisher's website: http://dx.doi.org/10.1007/s11695-020-04672-4
Magnetic phase diagram of the helimagnetic spinel compound ZnCr2Se4 revisited by small-angle neutron scattering
Creators: name: Cameron, A. S.
name: Tymoshenko, Y. V.
name: Portnichenko, P. Y.
name: Gavilano, J.
name: Tsurkan, V.
name: Felea, V.
name: Loidl, A.
name: Zherlitsyn, S.
name: Wosnitza, J.
name: Inosov, D. S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We performed small-angle neutron scattering (SANS) measurements on the helimagnetic spinel compound ZnCr2Se4. The ground state of this material is a multi-domain spin-spiral phase, which undergoes domain selection in a magnetic field and reportedly exhibits a transition to a proposed spin-nematic phase at higher fields. We observed a continuous change in the magnetic structure as a function of field and temperature, as well as a weak discontinuous jump in the spiral pitch across the domain-selection transition upon increasing field. From our SANS results we have established the absence of any long-range magnetic order in the high-field (spin-nematic) phase. We also found that all the observed phase transitions are surprisingly isotropic with respect to the field direction.
Investigating Master Students’ Mental Models of Google Search Engine
Publisher: name: Iranian Research Institute for Information Science and Technology (IranDoc)
Year: 2017

description: The World Wide Web (WWW) is a major channel of getting information and using web search engines is the most popular way of accessing information. This study aims to investigate master students’ mental model completeness level of Google web search engine. From the methodological perspective, this research is a practical one based on survey method. The sample population consisted of 30 master students from Ferdowsi University in engineering science, humanity/social sciences selected purposefully and participated voluntarily. The main tools for gathering data are semi-structured interview (based on mental model completeness scale (Li 2007) and designed questions) and direct observation.\nThe results demonstrated that 80% of students had incomplete mental models and 20% of them had good mental models and none of them showed a complete mental model. The majority of students’ perception was good in Specific/General Info, Multiple Type of Databases, Matching Process, Keyword Searching and Info Authority. The majority of students’ perception was moderate in Restricting/Broadening and Ranking/Sorting. But the majority of students’ perception was poor in Limited Info, Indexed Pages/Sites, Search Assistance, Boolean Operators, Search Operators and Prefixes, Punctuation and Symbols, Advanced Search and Search Setting. There was a significant difference between mental model completeness level and interactivity level. That is, the students having a better mental model showed better interactivity level.\nAccording to the findings, it is necessary to consider mental model as a factor affecting information seeking behavior, in designing information systems and training users too. Understanding users’ mental models reveal their errors, misconceptions and knowledge gaps, and by this pathology, it is possible to correct these faults and flaws and increase the effectiveness of the system and training.
Conduction Limiting Mechanisms in SWCNT Transparent Conducting Films
Creators: name: Bumby, C.W.
name: Ravi, S.
name: Kaiser, A.B.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Advanced Photovoltaics
Organic-based PV

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 599-601
description: Transparent Conducting films of single wall carbon nanotubes (SWCNTs) have been deposited upon
glass substrates and characterised via optical absorption and temperature dependent conductivity measurements.
SWCNTs were dispersed in the highly volatile butylamine/Tetrahydrofuran surfactant system which enabled the
production of extremely clean films via a simple annealing process. Unannealed films show sheet conductivities
~200-fold smaller than the annealed films due to current blocking by adsorbed butylamine on the nanotube surfaces.
Annealed films exhibit conductivities of ~10kΩ/ and optical transmission of >85% at 550nm. Temperature
dependent conduction modeling shows that conduction proceeds via a variable range hopping mechanism in both
films for temperatures below 225K. At temperatures above 225K the annealed films display an additional activation
current with an activation energy of ~0.21eV despite the absence of surfactant molecules within these films. It is
proposed that the observed barriers can be attributed to schottky-like contacts between metallic and semiconducting
nanotubes within the film.
Effects of Local Environment and Stellar Mass on Galaxy Quenching out to z~3
Creators: name: Darvish, Behnam
name: Mobasher, Bahram
name: Sobral, David
name: Rettura, Alessandro
name: Scoville, Nick
name: Faisst, Andreas
name: Capak, Peter
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We study the effects of local environment and stellar mass on galaxy properties using a mass complete sample of quiescent and star-forming systems in the COSMOS field at $z\lesssim$ 3. We show that at $z\lesssim$ 1, the median star-formation rate (SFR) and specific SFR (sSFR) of all galaxies depend on environment, but they become independent of environment at $z\gtrsim$ 1. However, we find that only for \textit{star-forming} galaxies, the median SFR and sSFR are similar in different environments, regardless of redshift and stellar mass. We find that the quiescent fraction depends on environment at $z\lesssim$ 1, and on stellar mass out to $z\sim$ 3. We show that at $z\lesssim$ 1, galaxies become quiescent faster in denser environments and that the overall environmental quenching efficiency increases with cosmic time. Environmental and mass quenching processes depend on each other. At $z\lesssim$ 1, denser environments more efficiently quench galaxies with higher masses (log($M/M_{\odot}$)$\gtrsim$ 10.7), possibly due to a higher merger rate of massive galaxies in denser environments, and that mass quenching is more efficient in denser regions. We show that the overall mass quenching efficiency ($ε_{mass}$) for more massive galaxies (log($M/M_{\odot}$)$\gtrsim$ 10.2) rises with cosmic time until $z\sim$ 1 and flattens out since then. However, for less massive galaxies, the rise in $ε_{mass}$ continues to the present time. Our results suggest that environmental quenching is only relevant at $z\lesssim$ 1, likely a fast process, whereas mass quenching is the dominant mechanism at $z\gtrsim$ 1, with a possible stellar feedback physics.
description: 17 pages, 10 figures, Accepted for publication in the ApJ
PV ERA NET – Towards more Joint Activities in Transnational European PV RTD Programming
Creators: name: Krupp, M.
name: Bastek, H.
name: Bernsen, O.
name: Durand, Y.
name: D'Hondt, K.
name: Angeles Ferre, M.
name: Gutschner, M.
name: Hübner, M.
name: Nowak, S.
name: Oberholzer, S.
name: Ostapczuk, A.
name: Palmblad, L.
name: Pietruszko, S.M.
name: Rochester, P.
name: Dahlen, A.
name: Spillioti, P.
name: Sørensen, J.B.
name: Tselepis, S.
name: Urban, R.
name: Zillner, T.
Publisher: name: WIP-Munich
Year: 2009
Subjects: PV Deployment
Markets for PV Systems

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 4377-4381
description: PV ERA NET aims at promoting cooperation and coherence of national and regional funding
programmes in the field of PV RTD in order to strengthen the European PV RTD landscape. The consortium
comprises 18 institutions from 11 states and 2 regions in Europe. The project’s overall objective shall be achieved by
a three-step approach ranging from structured information exchange over the assessment of suitable strategies
towards implementation of joint activities. Results include programme reports providing great wealth of information
and insight into programme contents, approaches and contexts as well as the assessment of barriers and opportunities.
Moreover, several concrete joint activities have been implemented, e.g. web-based database on PV RTD projects and
a Joint Call for projects in the field of Polymer and Molecular Solar Photovoltaic Cells and Modules.
Guideline on fostering practices for disability inclusion at higher education institutions (Trial Version, November 2021)
Creators: name: Ma, Yuet Kwan
name: CHAN, Beina Lai Fong
name: Wu, Ka Yu Florence
name: NG, Simon Tat Ming
name: IP, Elaine Chui Ling
name: Yeung, Pui Sze
Publisher: name: HKU Data Repository
Year: 2022
Subjects: Special education and disability
Higher education

description: This Guideline is one of the deliverables of the project on Enhancing Learning Experience for Students with Visual Impairment in Higher Education. It is a compilation of recommended practices that promote an accessible and inclusive teaching and learning environment for students with disabilities at higher education institutions. Sources of information included a review of websites of 76 local and international higher education institutions, focus group interviews, external review, as well as research team members’ input. The recommended practices cut across the cultural, policy, community, inter-university, intra-university, environmental, language and symbolic, technological, interpersonal, and individual levels. The recommended practices also correspond to different stages of higher education from students’ perspectives. Current version: Trial Version – November 2021 (in English; 146 pages; PDF) Content structure: The Guideline contains 16 chapters, 1 annex, and 1 appendix. Chapter 1: Project background Chapter 2: Basic concepts of rights-based guiding principles Chapters 3-8: Essential practices of the co-creation and management of an accessible and inclusive campus at different ecological levels 3. Concerted efforts by universities and the community 4. Intra-university coordination 5. Campus environment accessibility 6. Awareness-raising 7. Effective and inclusive communication 8. Accessible event planning Chapters 9-16: Stages of higher education 9. University application 10. Accessibility service initiation 11. Orientation series for new students 12. Living on campus 13. Non-academic support and activities 14. Academic support 15. Career planning and development 16. Graduation The Annex: Recommendation on government support The Appendix: List of examples of preferred terminology in relation to the Chapter 5.5 on Inclusive Terminology Target readers: Anyone who are interested to learn about disability inclusion at higher education institutions, particularly: Current students with disabilities; Current students without disabilities; Staff members of higher education institutions; Prospective students with disabilities; Advocates. For enquiries about the accessibility of the Guideline, please feel free to contact our team at ideaprojects@hku.hk
A Hamilton-Jacobi Theory for general dynamical systems and integrability by quadratures in symplectic and Poisson manifolds
Creators: name: Grillo, Sergio
name: Padrón, Edith
Publisher: name: arXiv
Year: 2015
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: In this paper we develope, in a geometric framework, a Hamilton-Jacobi Theory for general dynamical systems. Such a theory contains the classical theory for Hamiltonian systems on a cotangent bundle and recent developments in the framework of general symplectic, Poisson and almost-Poisson manifolds (including some approaches to a Hamilton-Jacobi theory for nonholonomic systems). Given a dynamical system, we show that every complete solution of its related Hamilton-Jacobi Equation (HJE) gives rise to a set of first integrals, and vice versa. From that, and in the context of symplectic and Poisson manifolds, a deep connection between the HJE and the (non)commutative integrability notion, and consequently the integrability by quadratures, is stablished. Moreover, in the same context, we find conditions on the complete solutions of the HJE that also ensures integrability by quadratures, but they are weaker than those related to the (non)commutative integrability. Examples are developed along all the paper in order to illustrate the theoretical results.
Guideline on fostering practices for disability inclusion at higher education institutions (Trial Version, November 2021)
Creators: name: Ma, Yuet Kwan
name: CHAN, Beina Lai Fong
name: Wu, Ka Yu Florence
name: NG, Simon Tat Ming
name: IP, Elaine Chui Ling
name: Yeung, Pui Sze
Publisher: name: HKU Data Repository
Year: 2022
Subjects: Special education and disability
Higher education

description: This Guideline is one of the deliverables of the project on Enhancing Learning Experience for Students with Visual Impairment in Higher Education. It is a compilation of recommended practices that promote an accessible and inclusive teaching and learning environment for students with disabilities at higher education institutions. Sources of information included a review of websites of 76 local and international higher education institutions, focus group interviews, external review, as well as research team members’ input. The recommended practices cut across the cultural, policy, community, inter-university, intra-university, environmental, language and symbolic, technological, interpersonal, and individual levels. The recommended practices also correspond to different stages of higher education from students’ perspectives. Current version: Trial Version – November 2021 (in English; 146 pages; PDF format, 3.45 MB) Content structure: The Guideline contains 16 chapters, 1 annex, and 1 appendix. Chapter 1: Project background Chapter 2: Basic concepts of rights-based guiding principles Chapters 3-8: Essential practices of the co-creation and management of an accessible and inclusive campus at different ecological levels 3. Concerted efforts by universities and the community 4. Intra-university coordination 5. Campus environment accessibility 6. Awareness-raising 7. Effective and inclusive communication 8. Accessible event planning Chapters 9-16: Stages of higher education 9. University application 10. Accessibility service initiation 11. Orientation series for new students 12. Living on campus 13. Non-academic support and activities 14. Academic support 15. Career planning and development 16. Graduation The Annex: Recommendation on government support The Appendix: List of examples of preferred terminology in relation to the Chapter 5.5 on Inclusive Terminology Target readers: Anyone who are interested to learn about disability inclusion at higher education institutions, particularly: Current students with disabilities; Current students without disabilities; Staff members of higher education institutions; Prospective students with disabilities; Advocates. For enquiries about the accessibility of the Guideline, please feel free to contact our team at ideaprojects@hku.hk
Investigation of Blistering of Sputtered Silicon Nitride Anti-Reflection Layer
Creators: name: Catoir, J.
name: Wolke, W.
name: Hartmann, P.
name: Gernot, E.
name: Preu, R.
name: Trassl, R.
name: Wieder, S.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Mono- and Multicrystalline Silicon Cells and Materials, Processing Technology of

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 1542-1545
description: In the course of a trend to use material with low quality for silicon solar cells there is a growing demand for good bulk passivation. An important parameter for the bulk passivation of multi crystalline solar cells is the hydrogen rate of the SiN:H anti-reflection layer. The hydrogen in this layer diffuses during the SiN;H deposition as well as during the contact formation process in the bulk and passivates impurities and defects. One advantage of the sputter technology compared to other deposition systems is the possibility to vary the amount of hydrogen easily. At high hydrogen concentrations in the SiN:H anti-reflection layer blistering occurs. Researches have shown that the cell performance increases with higher hydrogen concentrations, the only limiting factor being the occurring of blistering. In this work we present results for understanding the blistering effect and techniques to shift the blister boundary.
Efficiency Enhancement by Pristine C70 Doped in Polymer Solar Cells - Effects of Quantum Efficiency of Fullerenes -
Creators: name: Hosoya, M.
name: Saito, M.
name: Nishizawa, H.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Advanced Photovoltaics
Organic-based PV

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 610-612
description: The quantum efficiency (QE) values of six kinds of fullerenes were measured to understand the effects
of QE values on the characteristics of polymer solar cells. By xerographic discharge method, the order of QE value
was obtained as follows; C70>bisPC70BM>PC70BM>PC60BM>C60>PC84BM. The power conversion efficiency (PCE)
values of polymer solar cells consisting of fullerenes and P3HT were approximately proportional to QE's of fullerene
derivatives. Although pristine C70 showed the highest QE value, 0.72 at 640nm, the highest PCE value was given by
PC70BM cell. Among the fullerene derivatives, bisPC70BM gave the highest QE and Voc. By doping pristine C70 into
the active layer consisting of P3HT and PC70BM, PCE enhancement was observed, especially in the cases of lower
molecular weight P3HT.
Bifacial Cz-Silicon Solar Cells Passivated With Silicon Nitride
Creators: name: Janßen, L.
name: Windgassen, H.
name: Bätzner, D.L.
name: Bitnar, B.
name: Neuhaus, H.
name: Kurz, H.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Mono- and Multicrystalline Silicon Cells and Materials, Processing Technology of

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 1527-1529
description: Bifacial silicon solar cells with silicon nitride passivation are investigated with respect to the influence of the used base resistivity of the Czochralski silicon. In this paper will be shown that no effective back surface field is formed in a firing through approach and that this will limit the open circuit voltage. The open circuit voltage of these solar cells is determined by the built-in potential between the emitter and the base. The passivation quality of the silicon nitride on the rear side is superior to the aluminum back surface field, so that a gain in short circuit current can be observed for the lower base resistivity of the silicon and a maintaining of the short circuit current for the high base resistivity investigated here. Additionally the benefits of bifacial solar cell design are simulated with PC1D.
Missing Something? Comparisons of Effectiveness and Outcomes of Bariatric Surgery Procedures and Their Preferred Reporting: Refining the Evidence Base
Creators: name: El Ansari, Walid
name: El-Ansari, Kareem
Publisher: name: Manara - Qatar Research Repository
Year: 2022
Subjects: Medical biochemistry and metabolomics
Nutrition and dietetics

description: Comparisons of effectiveness of bariatric surgery (BS) procedures encompass weight loss, metabolic/clinical outcomes, and improvements or worsening of comorbidities. Post-operative physical activity (PA) and diet influence such outcomes but are frequently not included in comparisons of effectiveness. We assessed the value and necessity of including post-operative PA/diet data when comparing effectiveness of BS. Including post-operative PA/diet data has significant benefits for BS and patients. The paper proposes an explicit preferred reporting system (Preferred REporting of post-operative PHYsical activity and Diet data in comparisons of BS effectiveness: PRE-PHYD Bariatric). Including post-operative PA/diet data could result in more accurate appraisals of effectiveness of BS procedures. This could translate into better ‘individualized’ BS by achieving a better ‘fit’ between patient and procedure.Other Information Published in: Obesity Surgery
 License: https://creativecommons.org/licenses/by/4.0
See article on publisher's website: http://dx.doi.org/10.1007/s11695-020-04659-1
Plasma Texturing and its Influence on Surface Passivation
Creators: name: Groetschel, D.
name: Junge, J.
name: Kaes, M.
name: Zuschlag, A.
name: Hahn, G.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Mono- and Multicrystalline Silicon Cells and Materials, Processing Technology of

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 1534-1536
description: In this paper a proof of concept of a plasma texture developed for solar cell processing is presented. Currently the implementation of this step into standard cell processes is limited by the uniformity of the etching results. It was, however, successfully introduced into a photolithography based process for 2x2 cm²-cells, leading to a benefit in efficiency of up to 1%abs compared to untextured samples. The combination with emitter passivation by thermal oxide on the front side – both steps apart from each other leading to an improvement of cell data – shows a degradation of the effective diffusion length. This detrimental effect is assigned to defects generated at high oxidation or firing temperatures and demands further investigation and adjustment of the processing steps.
Accumulation through Abandonment: Demolition and the Uneven Production of Vacant Lots in Chicago Neighborhoods
Creators: name: Rucker, Adrian
Publisher: name: University of Chicago
Year: 2022

description: Demolition is a common fact of contemporary urban life, particularly in areas with aging building stock, rapid population change, or sudden transformations in land-use. Far from a natural or inevitable process, however, demolitions and their aftermath are intimately tied to the uneven production, destruction, and distribution of value in social and geographic space. This article argues that there are two main social categories that demolitions fall into: “rent gap” demolitions and “spatial fix” demolitions, each representing distinct but related moments in urban processes of capital accumulation and corresponding with either rapid redevelopment of land or sustained periods of land vacancy, respectively. The socioeconomic factors of community areas in Chicago have a great deal of influence on the patterns of demolition and redevelopment that occur, affecting what kinds of demolition occur where. In the context of cascading social and ecological crises, the forms of value that are legible to actors influencing the built environment, as well as accompanying practices of care and repair (or lack of it), call for urgent critical examination and reconsideration of demolition-neutral urban policy.
Passivation of Boron Emitters by Local Overcompensation With Phosphorus
Creators: name: Benick, J.
name: Schultz-Wittmann, O.
name: Schön, J.
name: Glunz, S.W.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Mono- and Multicrystalline Silicon Cells and Materials, Processing Technology of

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 1550-1552
description: A novel approach for the passivation of boron emitters is presented. As it is more difficult to achieve low surface recombination velocities on highly doped p-type silicon (e.g. boron emitter) than on highly doped n-type silicon (e.g. phosphorus emitter) our approach is to locally overcompensate the surface of the boron emitter by a shallow phosphorus diffusion. This inversion of the surface doping from p-type to n-type allows the use of standard technologies which are used for passivation of highly doped n-type surfaces. A low emitter saturation current density (J0e) of 49 fA/cm2 on SiO2 passivated lifetime samples has been reached. On solar cells we achieved with this this n- EPF (Emitter Passivated by a Floating junction) cell structure a confirmed conversion efficiency of 21.7 % and an open-circuit voltage (Voc) of 676 mV.
Is Revisional Gastric Bypass as Effective as Primary Gastric Bypass for Weight Loss and Improvement of Comorbidities?
Creators: name: Abdulrazzaq, Sama
name: Elhag, Wahiba
name: El Ansari, Walid
name: Mohammad, Amjad Salah
name: Sargsyan, Davit
name: Bashah, Moataz
Publisher: name: Manara - Qatar Research Repository
Year: 2022
Subjects: Medical biochemistry and metabolomics
Nutrition and dietetics

description: Background Revisional gastric bypass (R-RYGB) surgery is utilized for the management of inadequate weight loss or weight regain observed after some cases of bariatric surgeries. Data on the mid-term effectiveness of primary gastric bypass (P-RYGB) compared with R-RYGB (e.g., post sleeve gastrectomy/gastric banding) are controversial. Methods Retrospective chart review of all patients who received P-RYGB and R-RYGB (January 2011–June 2015) at our center. One hundred twenty patients who underwent P-RYGB and 34 R-RYGB who completed 18 months follow-up were included. We compared the effectiveness of P-RYGB with R-RYGB by assessing four anthropometric, two glycemic, and four lipid parameters, as well as the control of type 2 diabetes (T2DM), hypertension, dyslipidemia (remission, improvement, persistence, relapse, de novo), mortality and complications rates. Results A comparison of the effectiveness of P-RYGB with R-RYGB at 18 months revealed no significant differences in patients’ age, gender, and preoperative BMI between groups. However, patients who received P-RYGB had lower mean weight (P= 0.001) and BMI (P< 0.001), reflected by a higher mean delta BMI (P= 0.02), total weight loss percentage (TWL%) (P< 0.0001) and excess weight loss percentage (EWL%) (P< 0.0001). No differences in glycemic parameters, lipid profiles, control of T2DM, hypertension, and dyslipidemia were observed. No death is reported and complication rates were comparable. Conclusions Although R-RYGB effectively addressed inadequate weight loss, weight regain, and recurrence of comorbidities after restrictive bariatric surgery, R-RYGB resulted in inferior weight loss compared with P-RYGB. Neither procedure differed in their clinical control of T2DM, hypertension, and dyslipidemia. Both procedures exhibited comparable complication rates.Other Information Published in: Obesity Surgery
 License: https://creativecommons.org/licenses/by/4.0
See article on publisher's website: http://dx.doi.org/10.1007/s11695-019-04280-x
The sky is the limit: free boundary conditions in AdS$_3$ Chern-Simons theory
Creators: name: Apolo, Luis
name: Sundborg, Bo
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We test the effects of new diffeomorphism invariant boundary terms in SL(2,R)$\times$SL(2,R) Chern-Simons theory. The gravitational interpretation corresponds to free AdS$_3$ boundary conditions, without restrictions on the boundary geometry. The boundary theory is the theory of a string in a target AdS$_3$. Its Virasoro conditions can eliminate ghosts. Generalisations to SL(N,R)$\times$SL(N,R) higher spin theories and many other questions are still unexplored.
description: 10 pages, Contribution to the Proceedings of the International Workshop on Higher Spin Gauge Theories, Institute for Advanced Studies, NTU, Singapore, November 4-6, 2015
Management of leak after sleeve gastrectomy: outcomes of 73 cases, treatment algorithm and predictors of resolution.
Creators: name: Bashah, Moataz
name: Khidir, Nesreen
name: EL-Matbouly, Moamena
Publisher: name: Manara - Qatar Research Repository
Year: 2022
Subjects: Medical biochemistry and metabolomics
Nutrition and dietetics

description: Introduction Gastric leak post laparoscopic sleeve gastrectomy (LSG) is a severe complication that has been reported in 1.5–3% of cases. Management algorithms of leak exist; however, no known factors predict the time to resolution. This study aims to share outcomes of our management algorithm of post LSG leak, including the rate of resolution, complications, admission to the intensive care unit, conversion to other techniques, and mortality. To determine if any factors can predict the resolution time. Methods A retrospective analysis of patients who had LSG leaks and was managed in the main tertiary center in Qatar (January 2012–December 2017). Results A total of seventy-three patients had post LSG leaks. Fifty-six (76.7%) underwent LSG outside our center. Thirteen leaks (17.8%) were after revisional LSG. Laparoscopic exploration was performed in twenty patients (27.4%) and feeding jejunostomy in nine patients (12.3%). Patients were followed up for 12 months. All healed within 8.8 ± 0.72 weeks. The resolution rate was (97.1%) without surgical conversion, while two patients required fistulo-jejunostomy. No patient died. Complications occurred; re-leak (14.9%) and splenic abscess (2.9%). Patients on jejunal feeding had shorter resolution time (HR = 2.7, P = 0.018), while patients on total parenteral nutrition and post-endoscopic dilatation had 66% and 50% increases in the resolution time; (HR = 0.34, P = 0.026) and (HR = 0.5, P = 0.047), respectively. Conclusion Management of post-LSG leak is multimodal. Our clinical experience demonstrated less urge to perform extensive surgical interventions. Patients on enteral feeding had shorter resolution time while patients with sleeve stricture had a longer time to resolution.Other Information Published in: Obesity Surgery
 License: https://creativecommons.org/licenses/by/4.0
See article on publisher's website: http://dx.doi.org/10.1007/s11695-019-04203-w
Compared to What? Is BMI Associated with Histopathological Changes in Laparoscopic Sleeve Gastrectomy Specimens?
Creators: name: Saafan, Tamer
name: El Ansari, Walid
name: Bashah, Moataz
Publisher: name: Manara - Qatar Research Repository
Year: 2022
Subjects: Medical biochemistry and metabolomics
Nutrition and dietetics

description: Obesity is a risk for many different cancers. Laparoscopic sleeve gastrectomy (LSG) is common, and benign or pre-malignant histopathology types are reported in the removed gastric specimens. We assessed whether higher BMI was associated with certain benign or pre-malignant histopathological changes. Retrospective chart review of all primary LSG patients (N = 1555). Demographic, clinical, and LSG histopathology data were retrieved. BMI of patients with specific benign or pre-malignant conditions in their gastric specimens was compared with the BMI of the rest of the patients with abnormal histopathology specimens and also compared with the BMI of patients with normal control specimens. Females comprised 70% of the patients. Mean BMI were 46.3 (females) and 48 (males). Normal LSG specimens comprised 52%. Most common abnormal histopathologies were chronic inactive gastritis (33%), chronic active gastritis (6.8%), follicular gastritis (2.7%), lymphoid aggregates (2.2%), intestinal metaplasia (1.4%) and GIST (0.7%). After controlling for confounders (age, gender, H. pylori, diabetes mellitus type 2, hypertension), no significant association was observed between the BMI of patients with specific benign or pre-malignant histopathology compared with the BMI of the rest of the patients with abnormal histopathologies and compared to the BMI of patients with normal histopathologies. When confounders were taken into account, there appeared no significant associations between the BMI of patients with specific benign or pre-malignant histopathology compared with the BMI of the rest of the patients with abnormal histopathologies and compared to the BMI of patients with normal histopathologies of their gastric specimens. There was a very weak correlation between BMI and other covariates.Other Information Published in: Obesity Surgery
 License: https://creativecommons.org/licenses/by/4.0
See article on publisher's website: http://dx.doi.org/10.1007/s11695-019-03801-y
The Role of the Optical Constants of the Blend Films in the Optimization of Polymer-Fullerene Solar Cells
Creators: name: Bobeico, E.
name: De Sio, A.
name: Esposito, S.
name: Morvillo, P.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Advanced Photovoltaics
Organic-based PV

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 602-605
description: The absorption of the photoactive layer plays a key role in the efficiency of a polymer solar cell. The
deposition conditions and annealing treatments can produce films with different optical behaviors, even using the
same starting materials. In this paper we have studied the evolution of the optical constants of a blend film of poly(3-
hexylthiophene) (P3HT) and [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) as a function of the annealing
temperature. In order to simulate the optical absorption of the active layer inside a photovoltaic device, we have also
determined the optical constants of all the other components of the system. The investigated device has the following
schematic layer sequence: glass/indium tin oxide (ITO)/poly(3,4-ethylene-dioxythiophene):poly(styrenesulfonate)
(PEDOT:PSS)/P3HT:PCBM/Al. Once the optical functions of the films are obtained, we simulated the optical
absorption in the active layer and we calculated the maximum achievable short circuit current (i.e. neglecting the
electrical losses) with the aim to correlate the variation of the optical constants produced by annealing treatments to
the output current of the devices.
Electrifying the Poor: Highly Economic Off-Grid PV Systems in Ethiopia - A Basis for Sustainable Rural Development
Creators: name: Breyer, C.
name: Gerlach, A.
name: Hlusiak, M.
name: Peters, C.
name: Adelmann, P.
name: Winiecki, J.
name: Schützeichel, H.
name: Tsegaye, S.
name: Gashie, W.
Publisher: name: WIP-Munich
Year: 2009
Subjects: PV Systems
Off-grid Applications and Rural Electrification

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 3852-3860
description: Nearly all of the about 80% of Ethiopians living in rural areas have no access to electricity. Excellent solar conditions
enable attractive small off-grid PV systems for rural population. Their today’s energy budget allows short payback
periods of only about 2 to 4 years. As a consequence of high oil prices, even larger PV systems are very competitive
to diesel generators and village power supply, respectively. A solar electrification roadmap for rural Ethiopia is
already started and includes model projects, professional solar training and initiating local solar businesses. Highly
economic solar systems, available to rural population, generate additional purchasing power and open new financial
capabilities for sustainable rural development.
High-Precision Nonenzymatic Electrochemical Glucose Sensing Based on CNTs/CuO Nanocomposite
Creators: name: Geetha, Mithra
name: Maurya, Muni Raj
name: Al-maadeed, Somaya
name: Muthalif, Asan Abdul
name: Sadasivuni, Kishor Kumar
Publisher: name: Manara - Qatar Research Repository
Year: 2022
Subjects: subject: Macromolecular and materials chemistry
subject: Nanotechnology
subject: FOS: Nanotechnology

description: The measurement of blood glucose levels is essential for diagnosing and managing diabetes. Enzymatic and nonenzymatic approaches using electrochemical biosensors are used to measure serum or plasma glucose accurately. Current research aims to develop and improve noninvasive methods of detecting glucose in sweat that are accurate, sensitive, and stable. The carbon nanotube (CNT)-copper oxide (CuO) nanocomposite (NC) improved direct electron transport to the electrode surface in this study. The complex precipitation method was used to make this NC. X-ray diffraction (XRD) and scanning electron microscopy were used to investigate the crystal structure and morphology of the prepared catalyst. Using cyclic voltammetry and amperometry, the electrocatalytic activity of the as-prepared catalyst was evaluated. The electrocatalytic activity in artificial sweat solution was examined at various scan rates and at various glucose concentrations. The detection limit of the CNT-CuO NC catalyst was 3.90 µM, with a sensitivity of 15.3 mA cm−2 µM−1 in a linear range of 5–100 µM. Furthermore, this NC demonstrated a high degree of selectivity for various bio-compounds found in sweat, with no interfering cross-reactions from these species. The CNT-CuO NC, as produced, has good sensitivity, rapid reaction time (2 s), and stability, indicating its potential for glucose sensing. Graphical AbstractOther Information Published in: Journal of Electronic Materials
 License: https://creativecommons.org/licenses/by/4.0
See article on publisher's website: http://dx.doi.org/10.1007/s11664-022-09727-z
The Risk Adjusted Financial Costs of PV
Creators: name: Szabó, S.
name: Jäger-Waldau, A.
name: Szabo, L.
Publisher: name: WIP-Munich
Year: 2009
Subjects: PV Deployment
Enablers for PV Development and Benefits of PV

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 4395-4404
description: Recent analyses show significant differences in the levelised PV electricity cost calculations. The present paper
points out that no unique or absolute cost figure can be justified, the correct solution is to use a sequence of cost figures that
is determined in a dynamic power portfolio interaction within the financial scheme, support mechanism and industry cost
reduction. Financial investors take account of risks of all options in power generation portfolio, they translate them into the
return expectation in the financial appraisal and make investment decisions on this basis. The paper shows the resulting
electricity market trend, the associated risk perception and classification. Using these finding, a former version of a financing
model was adapted to project the energy mix changes due to investors behaviour with different risk tolerance/aversion. From
the realisation of its importance we try to ascertain the possible risk mitigation tasks for all stakeholders in the PV market.
ON QUASICONVEX CONDITIONAL MAPS. DUALITY RESULTS AND APPLICATIONS TO FINANCE
Creators: name: MAGGIS, MARCO
Publisher: name: Universit� degli Studi di Milano
Year: 2010

description: Motivated by many financial insights, we provide dual representation theorems for quasiconvex conditional maps defined on vector space or modules and taking values in sets of random variables. These results match the standard dual representation for quasiconvex real valued maps provided by Penot and Volle. As a financial byproduct, we apply this theory to the case of dynamic certainty equivalents and conditional risk measures.
Global Monitoring of the "Conto Energia" Programme
Creators: name: Castello, S.
name: De Lillo, A.
name: De Lia, F.
name: Lato, C.
name: Trezza, F.
Publisher: name: WIP-Munich
Year: 2009
Subjects: PV Systems
PV Power Plants

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 3848-3851
description: The monitoring of the Programme has been mainly focussed on the analysis and the statistical
evaluation of the data of about 37,000 plants, corresponding to a total power of 470 MW, already put in
operation during the years 2007, 2008 and early 2009.
Electric, energetic and architectural aspects have been evaluated for each plant. Moreover, these plants have
been characterised according to site location, building concerned, mounting typology, modules and inverters
technology and provenience. As far as the plants realized in the framework of the first phase of the “Conto
energia” Programme, the analysis and the evaluations have been limited to the general and technical aspects
only.
For the plant built in the framework of the new phase of the Programme, a richer variety of data has been
collected. As a consequence, on the basis of energy production and irradiation data, as well as outage periods,
the analysis and the statistical evaluation has been extent to plant performance and reliability as well as trend
of costs of systems and components. Finally through the monitoring of the status of the Italian photovoltaic
industry has been evaluated the net value of photovoltaic business in Italy during the last years.