cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Image Stacking Analysis of SDSS Galaxies with AKARI Far-Infrared Surveyor Maps at 65μm, 90μm, and 140μm
Creators: name: Okabe, Taizo
name: Kashiwagi, Toshiya
name: Suto, Yasushi
name: Matsuura, Shuji
name: Doi, Yasuo
name: Takita, Satoshi
name: Ootsubo, Takafumi
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We perform image stacking analysis of Sloan Digital Sky Survey (SDSS) photometric galaxies over the AKARI Far-Infrared Surveyor (FIS) maps at 65μm, 90μm, and 140μm. The resulting image profiles are decomposed into the central galaxy component (single term) and the nearby galaxy component (clustering term), as a function of the r-band magnitude, m_r of the central galaxy. We find that the mean far-infrared (FIR) flux of a galaxy with magnitude m_r is well fitted with f^s_{90μm}=13*10^{0.306(18-m_r)}[mJy]. The FIR amplitude of the clustering term is consistent with that expected from the angular-correlation function of the SDSS galaxies, but galaxy morphology dependence needs to be taken into account for a more quantitative conclusion. We also fit the spectral energy distribution of stacked galaxies at 65μm, 90μm, and 140μm, and derive a mean dust temperature of ~30K. This is consistent with the typical dust temperature of galaxies that are FIR luminous and individually detected.
description: 19 pages, 17 figures, 3tables, accepted for publication in PASJ
Trends in PV Patents: The Coming Collision of Patents with Progress in Photovoltaic Technology
Creators: name: Chang, E.L.
name: Lee, D.D.
name: Blake, G.E.
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; 4405-4411
description: PV patents are being granted at an increasing rate. Looking more closely, three recent trends in the
patenting of photovoltaic technology have emerged that, in conjunction with other factors, could increase industry
costs and discourage future innovation. First, the vast majority of PV patents are being granted to private companies
at a time when PV markets are becoming increasingly competitive. Second, many patents were granted during the
last solar boom to companies that may have since failed, presenting opportunities for non-practicing licensing entities
to acquire patents and threaten the PV industry. Third, the abundance of patents and their perception as delaying
rapid deployment of renewable energy technologies could encourage the application of compulsory licensing by
governments. These three trends would each act to stifle progress in PV technology. One potential solution may be
the use of patent pools, which have the potential to reduce transaction and litigation costs while retaining control over
the technology. However, patent pools must be carefully constructed and administered, and standard setting
organizations within the PV field have taken different approaches to the implementation of patent pools in connection
with their respective standards.
Update of PV Energy Payback Times and Life-Cycle Greenhouse Gas Emissions
Creators: name: Fthenakis, V.
name: Kim, H.C.
name: Held, M.
name: Raugei, M.
name: Krones, J.
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; 4412-4416
description: An update of EPBT and greenhouse gas emissions from the life cycle of CdTe thin-film technology and bulk
Si PV technologies (i.e., mono, multi-crystalline and ribbon) is presented. All technologies have improved substantially from
the previous (2004-2006) estimates. CdTe PV production and recycling in Frankfurt-Oder, Germany has been investigated in
detail. Furthermore, emission factors of NF3 in the production of the gas and its use in reactor cleaning in a-Si/tandem-Si PV
facilities are investigated based on actual data from two production sites and six end-use facilities. These data show much
lower NF3 emission factors than those previously reported.
PVCYCLE - The Voluntary Take Back System and Industrial Recycling of PV Modules
Creators: name: Wambach, K.
name: Schlenker, S.
name: Konrad, B.
name: Müller, A.
name: Von Ramin-Marro, D.
name: Clyncke, J.
name: Gómez, V.
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; 4417-4421
description: A modern and green industrial production of photovoltaic products requires sound environmental policies
of the companies involved. PVCYCLE Association is working hard on a take back and high value recycling solution for
end of life modules and production scrap to be implemented in short term. The increasing amount of waste, the rocketing
number of module types, and the wide variation of materials used require technical solutions for cost effective and
environmentally sound recycling of all product types. SolarWorld has developed a completely new and cost effective
recycling technology ready for up-scaling to an industrial processing of any end of life modules within a European take
back strategy. An essential milestone was fulfilled to establish a voluntary, EU certified recycling system. An overview
of the technical approach, recycling results, costs and status of the industrial realisation will be presented.
STRUCTURE-BASED DESIGN OF GLYCOMIMETIC LIGANDS FOR THE N-TERMINAL DOMAIN OF BC2L-C LECTIN
Creators: name: LAL, KANHAYA
Publisher: name: Universit� degli Studi di Milano
Year: 2021

description: The prevalence of drug-resistant infections has challenged the existing treatment regimen using antibiotics. There is a need to discover and employ alternative and complementary therapies to counteract these life threatening infections. In fast few decades, the use of anti-adhesion molecules targeting virulence factors such as lectins has been proven an attractive approach to counteract the infections by disarming the pathogens. This thesis work aimed to design glycomimetic antagonists of the N-terminal domain of the BC2L-C lectin (BC2L-C-nt) from the drug-resistant pathogen known as B. cenocepacia. We employed a fragment-based approach to design glycomimetic antagonists of the target protein (BC2L-C-nt). The initial studies were focused towards the binding site prediction and target evaluation by computational tools which identified additional druggable regions near the fucoside binding site in BC2L-C-nt. These additional regions have been explored further to evaluate the druggability by employing virtual screening of a small fragment library. This identified an interesting region (region ?X?) that could host the drug-like fragments by establishing some key interactions. These interactions with the lectin have been confirmed using a group of biophysical techniques, including X-ray crystallography. Remarkably, the binding mode of one of the fragment (KL3) has been validated by X-ray crystallography at high resolution confirming the ability of site X to host drug-like fragments. Further, the fragments have been chemically connected to the fucose core to obtain high-affinity bifunctional glycomimetic ligands. Interestingly, the crystal complexes of BC2L-C-nt with two bifunctional glycomimetic ligands again confirmed the druggability of the identified site, thus also validated the computational predictions. Hence, the first generation of glycomimetic ligands with binding affinities in micromolar range have been successfully designed. These glycomimetics provide further opportunities to design high-affinity ligands. Future studies based on structure-based approaches and robust synthetic routes to synthesize glycomimetics can lead towards the high-affinity ligands as anti-adhesive agents against B. cenocepacia.
DISSECTING THE STING-DEPENDENT MOLECULAR MECHANISMS IN A PRECLINICAL MODEL OF COMBINED TREATMENT WITH TUMOUR-TARGETED HERPES SIMPLEX VIRUS AND IMMUNE CHECKPOINT BLOCKADE
Creators: name: FROECHLICH, GUENDALINA
Publisher: name: Universit� degli Studi di Milano
Year: 2021

description: Oncolytic viruses promote anti-tumour immune response by direct tumour cell killing and activation of intratumoural immune system. The role of innate antiviral immune response to oncolytic viruses is still debated, as they counteract viral replication and trigger adaptive antitumor immunity. The DNA sensing-mediated cGAS/STING axis may act as a key balancer between lytic and immunotherapeutic activity of oncolytic viruses. Indeed, upon infection, viral DNA is sensed by cGAS/STING axis that, in turn, induces type-I interferon cascade counteracting viral replication and spread. For this reason, STING represents a hurdle for classical lytic-centric function of oncolytic viruses. On the other side, the immunological role of STING should also be considered, as it is emerging as a key bridge between innate and adaptive immunity. To evaluate the role of STING expression in tumour cells in response to onco-virotherapy, we generated murine STING KO tumour cell lines through CRISPR/Cas9 genome editing. Preclinical studies in syngeneic immunocompetent tumour-bearing mice showed that the inactivation of STING in tumour cells, while favouring oncolytic viral replication, impaired the immunotherapeutic effects of combination therapy based on herpetic oncolytic virus and PD1 blockade. Molecular characterization of tumours revealed that loss of STING prevents antitumour immune activation inducing a tolerogenic cell death and immunosuppressive tumour microenvironment. Accordingly, I propose that antiviral, tumourresident STING provides fundamental contributions to heat-up the TME eliciting immunotherapeutic efficacy of oncolytic viruses.
Simulating the timescale dependent color variation in quasars with a revised inhomogeneous disk model
Creators: name: Cai, Zhen-Yi
name: Wang, Jun-Xian
name: Gu, Wei-Min
name: Sun, Yu-Han
name: Wu, Mao-Chun
name: Huang, Xing-Xing
name: Chen, Xiao-Yang
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The UV/optical variability of active galactic nuclei and quasars is useful for understanding the physics of the accretion disk and is gradually attributed to the stochastic fluctuations over the accretion disk. Quasars generally appear bluer when they brighten in the UV/optical, the nature of which remains controversial. Recently \citeauthor{Sun2014} discovered that the color variation of quasars is timescale dependent, in the way that faster variations are even bluer than longer term ones. While this discovery can directly rule out models that simply attribute the color variation to contamination from the host galaxies, or to changes in the global accretion rates, it favors the stochastic disk fluctuation model as fluctuations in the innermost hotter disk could dominate the short-term variations. In this work, we show that a revised inhomogeneous disk model, where the characteristic timescales of thermal fluctuations in the disk are radius-dependent (i.e., $τ\sim r$; based on the one originally proposed by \citeauthor{DexterAgol2011}), can well reproduce a timescale dependent color variation pattern, similar to the observed one and unaffected by the un-even sampling and photometric error. This demonstrates that one may statistically use variation emission at different timescales to spatially resolve the accretion disk in quasars, thus opens a new window to probe and test the accretion disk physics in the era of time domain astronomy. Caveats of the current model, which ought to be addressed in future simulations, are discussed.
description: 20 pages, 18 figures, ApJ accepted
Two Diffusion Step Selective Emitter: Comparison of Mask Opening by Laser or Etching Paste
Creators: name: Book, F.
name: Raabe, B.
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; 1546-1549
description: Two dimensional solar cell structures to form a selective emitter on the front side or back contact solar cells are often created with the aid of a selectively opened masking layer. In this paper we compare two methods of opening a PECVD SiNX layer. A nanosecond laser with a wavelength of 355 nm was used to ablate a PECVD SiNX layer. Alternatively, an etching paste was screen printed and subsequently heated to remove the SiNX. Both methods were successfully applied for the formation of a selective emitter structure on standard Cz monocrystalline solar cells. The process sequence includes two diffusion steps and uses one SiNX layer as a mask and also as an ARC. Since the front contact grid and the mask opening have the same shape, they have to be aligned accurately. The best cell efficiency of 18.1% was achieved on an industrial scale solar cell with a SiNX ARC opened by the etching paste. Scanning electron microscope pictures showed that the laser ablation method melts the silicon underneath the SiNX layer and thus a wet chemical damage etch must also be applied, whereas the screen printed etching paste removes
the SiNX without damaging the silicon.
Gas Sensing and Power Harvesting Polyvinylidene Fluoride Nanocomposites Containing Hybrid Nanotubes
Creators: name: Ponnamma, Deepalekshmi
name: Sharma, Ashok K.
name: Saharan, Priya
name: Al-Maadeed, Mariam Al Ali
Publisher: name: Manara - Qatar Research Repository
Year: 2022
Subjects: subject: Macromolecular and materials chemistry
subject: Nanotechnology
subject: FOS: Nanotechnology

description: Gas sensing properties at room temperature and energy harvesting performances are realized for the polyvinylidene fluoride (PVDF) nanocomposites containing titanium dioxide (TiO2) nanotubes grown in the presence of carbon nanotubes (CNT). While hydrothermal reaction is practiced for the development of TiO2/CNT hybrid nanotubes, spin coating is done for the nanocomposite films to be deposited on sensing electrodes. Influence of various filler concentrations and the synergistic combination of fillers on the sensing characteristics are studied by recording the response times and the stability of the results. Upon exposure to liquefied petroleum gas, the PVDF/TiO2-CNT (2.5 wt.%) gas sensor shows a sensing response of 0.45 s (400 ppm LPG), approximately nine times higher than the composite containing 2.5 wt.% of TiO2 or 2.5 wt.% CNT. The piezoelectric response of the samples is also recorded and correlated with the synergistic influence of the filler materials. The current study can stimulate a good trend in fabricating self-powered gas sensors from PVDF nanocomposites.Other 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/s11664-019-07915-y
European Photovoltaic Actions and Programmes-2009
Creators: name: Menna, P.
name: Gambi, R.
name: Hercsuth, A.
name: Gillett, W.
name: Tondi, G.
name: Piontek, A.
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; 4372-4376
description: The 7th Framework Programme for research and the second IEE Programme both have significantly increased
budgets compared to the previous programmes, and will run for seven years, from 2007 to 2013, with calls planned annually.
Under these programmes the EU has continued to provide support for photovoltaic research, technological development and
demonstration together with market development and transformation. Technological development and innovation remain
fundamental to delivering the more competitive PV systems, which are needed in the rapidly expanding renewable energy
markets. At the same time, European legislation has proven to be an important driver of renewable energy development,
including PV. The new recently adopted renewable energy directive is expected to play an increasing role and to stimulate to a
large extent also the PV sector. The strong political commitment to renewable energy targets backed by sound support
schemes and research and market transformation programmes are essential elements of the framework conditions which are
necessary to assure the future growth of the PV sector in Europe.
GOLD-CATALYZED SYNTHESIS AND FUNCTIONALIZATION OF HETEROARENES
Creators: name: PIROVANO, VALENTINA
Publisher: name: Universit� degli Studi di Milano
Year: 2014

description: This work of thesis describes the results obtained from the study of gold-catalyzed synthesis or functionalization reactions or heteroarenes. The work is presented in four different chapters. The first chapter summarizes the most representative reactivity trends in the field of gold catalysis and serves as general introduction. The second chapter is focused on the cycloaddition reaction of 2-vinylindoles with enones towards the preparation of tetrahydrocarbazole derivatives. This process has been studies using classic Lewis acids and gold complexes as catalysts. According to the results, gold catalysts proved more efficient to accomplish the transformation. In the third chapter, a study on gold-catalyzed cycloaddition reactions of 2-vinylindoles with allene derivatives is presented. This work has allowed to identify two different reaction pathways, a formal 4+2 cycloaddition and a multicomponent reaction, both leading to different tetrahydrocarbazole derivatives. The reaction outcome can be controlled with the judicious choice of the reaction conditions. The forth chapter is devoted to the study of gold- and to less extend silver-catalyzed reactions of indoles with dehydroaminoacis. This study has enabled the discovery of a new reactivity of this substrates. The reaction involves the formation of ?-indolylacrilate derivatives.
Design of a Special Set-Up for the I-V Characterization of Bifacial Photovoltaic Solar Cells
Creators: name: Ezquer, M.
name: Petrina, I.
name: Cuadra, J.M.
name: Lagunas, A.R.
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; 1553-1556
description: The objective of this paper is to describe a bifacial cell tester designed and constructed by CENER in order to evaluate the electrical response of the bifacial PV solar cells. The great versatility of the set-up built makes possible the measurement of the I-V characteristic of the bifacial solar cells with different combinations of front-rear irradiances, and in this way obtain the electrical cell parameters like short circuit current (ISC), open circuit voltage (VOC), maximal power (PMAX), Fill Factor, etc, in different albedo conditions. The I-V characterization results of a bifacial PV cell are shown as example to illustrate the possibilities of the tester.
IL PRIMO CONSORZIO AGRARIO COOPERATIVO DI PIACENZA (1900 - 1945)
Creators: name: CATTANEI, GIUSEPPE
Publisher: name: Universit� degli Studi di Milano
Year: 2011

description: The history of ?Primo Consorzio Agrario? of Piacenza is inserted in a seam historiographic school, in reality a little frequented, that studies the role of this farmers cooperative in the cooperation?s and agricolture?s development. This farmers cooperative established in 1900 and it was of the same wavelength as the agricultural local environment. This organization develops him in the first 15 years of 1900. It becomes the more vital economic center in Piacenza. The life of this farmers cooperative is tightly tied to the ?Federazione italiana dei Consorzi agrari?, born in Piacenza in 1892. Its independence ended in the fascist period, on the occasion of the laws of 1938 and the 1942. Taken back only his normal activity at the end of the Second World war.
Moving object tracking in clinical scenarios: application to cardiac surgery and cerebral aneurysm clipping
Creators: name: Dakua, Sarada Prasad
name: Abinahed, Julien
name: Zakaria, Ayman
name: Balakrishnan, Shidin
name: Younes, Georges
name: Navkar, Nikhil
name: Al-Ansari, Abdulla
name: Zhai, Xiaojun
name: Bensaali, Faycal
name: Amira, Abbes
Publisher: name: Manara - Qatar Research Repository
Year: 2022
Subjects: Clinical sciences
Health services and systems

description: Surgical procedures such as laparoscopic and robotic surgeries are popular since they are invasive in nature and use miniaturized surgical instruments for small incisions. Tracking of the instruments (graspers, needle drivers) and field of view from the stereoscopic camera during surgery could further help the surgeons to remain focussed and reduce the probability of committing any mistakes. Tracking is usually preferred in computerized video surveillance, traffic monitoring, military surveillance system, and vehicle navigation. Despite the numerous efforts over the last few years, object tracking still remains an open research problem, mainly due to motion blur, image noise, lack of image texture, and occlusion. Most of the existing object tracking methods are time-consuming and less accurate when the input video contains high volume of information and more number of instruments. This paper presents a variational framework to track the motion of moving objects in surgery videos. The key contributions are as follows: (1) A denoising method using stochastic resonance in maximal overlap discrete wavelet transform is proposed and (2) a robust energy functional based on Bhattacharyya coefficient to match the target region in the first frame of the input sequence with the subsequent frames using a similarity metric is developed. A modified affine transformation-based registration is used to estimate the motion of the features following an active contour-based segmentation method to converge the contour resulted from the registration process. The proposed method has been implemented on publicly available databases; the results are found satisfactory. Overlap index (OI) is used to evaluate the tracking performance, and the maximum OI is found to be 76% and 88% on private data and public data sequences.Other Information Published in: International Journal of Computer Assisted Radiology and Surgery
 License: https://creativecommons.org/licenses/by/4.0
See article on publisher's website: http://dx.doi.org/10.1007/s11548-019-02030-z
Performance of Thirty Years Stand Alone Photovoltaic System
Creators: name: Saleh, I.M.
name: Abouhdima, I.
name: Gantrari, M.B.
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; 3995-3998
description: The use of Photovoltaic systems as a stand-alone power supply in Libyan telecommunication networks has
been in use since 1979. A pilot project was put in work in 1979-1980 to supply electricity for telecommunication repeater
stations, it was expected that the system will only last for twenty years; but the systems lasted thirty years up to now, and
expected to run for more. It was proved that PV generators are reliable and more economical in comparison with diesel
generators.
In Libya more photovoltaic systems were put into work since 1990, with an estimated total peak power of more than 800
KWp by the end of year 2008. It was due to the durability and reliability of PV systems in this type of applications, that
convinced Almadar Algadid company which is a mobile and telecommunication company in Libya, to use PV systems in
GSM stations around the country, the total peak power in the field of communicationwill reach about 2.6 Mega watt peak by
the end of this year.
The experience reflected from using PV systems in telecommunications for thirty years proved to be reliable, have a very low
or no communication stops, and more economical in comparison with stations running by diesel generators.
The PV systems, which are installed in 1979-1980, still running with a little decrease in the output power but with some
changes in its designed parameters. We experienced that closed type batteries are more reliable than open type, with a life
time of ten years, when designing the batteries with five days autonomy.
In this paper we will compare the PV system output power after thirty years of work with the designed power, expose the
past experiences for using these PV systems in microwave repeater stations.
Selective Ablation of Passivation Layers on Silicon Solar Cells by Ultrashort Femtosecond Laser Pulses
Creators: name: Rublack, T.
name: Seifert, G.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Advanced Photovoltaics
Fundamental Studies

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 564-565
description: This work evaluates the process of selective ablation of passivation layers by ultrashort IR femtosecond
(fs) laser pulses. The ablation is a precondition for designing structures without masks or photo-lithographical
definition and can be part of a two-step metallization concept or manufacturing of Back Junction Solar Cells. It will
be shown that selective ablation using fs pulses works over a relatively broad range of energies; possible mechanisms
explaining this selective ablation will be discussed.
Plasmonic Photovoltaics: Photocurrent Enhancement by Metal Nanoparticles on Solar Cell Interface
Creators: name: Dmitruk, N.L.
name: Korovin, A.V.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Advanced Photovoltaics
Fundamental Studies

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 566-569
description: Two different ways to enhance the efficiency of surface-barrier solar cell, using metal nanoparticles
incorporated into interface, have been analyzed theoretically in this paper: i) increase of light absorption in
semiconductor due to scattering on the nanoparticles, and ii) additional photocurrent generation by the near-field of
surface plasmon excited. First task have been solved on the base of modified differential formalism method for
Maxwell’s equations, when the boundary conditions simplified by introduction of the curvilinear non-orthogonal
coordinates. The second one solves phenomenologically by using diffusion-diode theory, when the near-field
generation is included in the boundary conditions for minority carriers flux. Numerical results have been obtained for
semiconductors GaAs and Si with Au nanoparticles on the interface with metal or other high conductive layer (ITO,
FTO etc.).
Accurate Extraction of Doping Profiles from Electrochemical Capacitance Voltage Measurements
Creators: name: Bock, R.
name: Altermatt, P.P.
name: Schmidt, J.
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; 1510-1513
description: It is known that the accuracy of Electrochemical Capacitance Voltage measurements crucially depends on many parameters such as measurement voltage, electrolyte concentration, the dissipation factor or the Debye length of the measured material. Using fully automated measurement equipment, we demonstrate that the accuracy is mainly determined by the precise knowledge of the Si-electrolyte contact area. The sealing rings used in commercially available
ECV measurement equipment are not well defined and the contact area may increase during the measurement. We obtain a reproducible and excellent agreement between ECV, four-point probe, and SIMS measurements if we recalculate the doping profiles considering the exact Si-electrolyte contact area obtained from optical microscopy images. In addition, the corrected ECV data can be precisely reproduced with the process simulation software Ssuprem3.
Acceptor Modulation Doping of SiO2 for Providing Holes to Si Quantum Dots
Creators: name: König, D.
name: Rudd, J.
name: Shrestha, S.
name: Conibeer, G.
name: Green, M.A.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Advanced Photovoltaics
Fundamental Studies

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 575-578
description: The thermodynamics of foreign atoms in nano crystals (NCs) shows that conventional doping is not feasible
to a degree required for high quality devices. Modulation doping is used for III-V super lattices (SLs), with
excellent results for majority carriers. Adopting modulation doping to Si NCs in a SiO2 matrix is difficult.
We investigated -SiO2 approximants by ab-initio methods. Conventional Si dopants fail to deliver shallow
energy levels which can be occupied. Finding donors in SiO2 in order to provide electrons for Si NCs is
not possible due to the strong anionic nature of oxygen (O). However, scandium (Sc) works as an acceptor
when replacing Si. The electronic nature of Sc results in a lowest unoccupied molecular orbital (LUMO) at
an unusually high electron affinity (X). This LUMO can then be doubly occupied by accepting an electron
from Si NCs. The doping approach does not depend on the NC material.
Microphone array post-filter for separation of simultaneous non-stationary sources
Creators: name: Valin, Jean-Marc
name: Rouat, Jean
name: Michaud, François
Publisher: name: arXiv
Year: 2016
Subjects: subject: Sound (cs.SD)
subject: FOS: Computer and information sciences

description: Microphone array post-filters have demonstrated their ability to greatly reduce noise at the output of a beamformer. However, current techniques only consider a single source of interest, most of the time assuming stationary background noise. We propose a microphone array post-filter that enhances the signals produced by the separation of simultaneous sources using common source separation algorithms. Our method is based on a loudness-domain optimal spectral estimator and on the assumption that the noise can be described as the sum of a stationary component and of a transient component that is due to leakage between the channels of the initial source separation algorithm. The system is evaluated in the context of mobile robotics and is shown to produce better results than current post-filtering techniques, greatly reducing interference while causing little distortion to the signal of interest, even at very low SNR.
description: 4 pages. arXiv admin note: substantial text overlap with arXiv:1603.02341
Impact of the Crystal Structure on Solar Cell Parameters of Ribbon Growth on Substrate (RGS) Solar Cells
Creators: name: Hess, U.
name: Lauermann, T.
name: Seren, S.
name: Hahn, G.
name: Gutjahr, A.
name: Schönecker, A.
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; 1522-1526
description: Ribbon Growth on Substrate (RGS) is a cost-effective method to produce silicon wafers directly from molten silicon without material losses due to wire sawing. This technique decouples crystallization and pulling direction of the silicon wafers which results in good wafer quality at a very high production speed of about one wafer per second. The multicrystalline wafers have typical grain sizes between 0.1 mm and 0.5 mm so that spatially resolved investigations of the effect of the crystal structure on cell performance are expected to improve wafer production and cell processing. One processed RGS solar cell was measured with Light Beam Induced Current (LBIC) and Lock-In Thermography (LIT) and the data was correlated with dislocation densities and electron microscopy investigations. In regions where the as grown wafer is thinner compared to the average wafer thickness, the internal quantum efficiency shows a tendency towards lower values. This can be traced back to high defect densities introduced by mechanical stresses during casting. An Energy Dispersive X-ray (EDX) analysis revealed carbon and oxygen impurities and possible precipitates. Also metal impurities in some of the defect-rich regions were found which may affect their electronic properties.
Implementation of Quality Assurance Procedures in Rural Electrification with PV Systems
Creators: name: Egido Aguilera, M.A.
name: Camino-Villacorta, M.
name: Salazar, I.
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; 4006-4009
description: This paper deals with measures to improve present technical quality of photovoltaic stand-alone
systems by means of a combined strategy – on the one hand, by promoting the quality control of photovoltaic
systems according to global standards that can be verified at local level and on the other hand, through the
development of tools which resolve issues related to reliability of photovoltaic installations. The methodology to
reach both targets is embedded in the critical significance of "local aspects" and the need for improved feedback from
field experience. These assumptions were our basis to structure the project. DOSBE is proposing a full set of
guidelines and technical standards to implement a Quality Assurance Procedure for PV rural electrification systems
that can improve the reliability of PV installations.
Warped $R-$Parity Violation
Creators: name: Allanach, B. C.
name: Iyer, A. M.
name: Sridhar, K.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider a modified Randall-Sundrum (RS) framework between the Planck scale and the GUT scale. In this scenario, RS works as a theory of flavour and not as a solution to the hierarchy problem. The latter is resolved by supersymmetrising the bulk, so that the minimal supersymmetric standard model being the effective 4-dimensional theory. Matter fields are localised in the bulk in order to fit fermion-mass and mixing-data. If $R$-parity violating terms are allowed in the superpotential, their orders of magnitude throughout flavour space are then predicted, resulting in rich flavour textures. If the $R$-parity violating contributions to neutrino masses are somewhat suppressed, then lepton-number violating models exist which explain the neutrino oscillation data while not being in contradiction with current experimental bounds. Another promising model is one where baryon number is violated and Dirac neutrino masses result solely from fermion localisation. We sketch the likely discovery signatures of the baryon-number and the lepton-number violating cases.
description: 20 Pages, 4 Figures
The COVID-19-Related Lockdown in Qatar: Associations Among Demographics, Social Distancing, Mood Changes, and Quality of Life
Creators: name: Megreya, Ahmed M.
name: Latzman, Robert D.
name: Al-Ahmadi, Aisha M.
name: Al-Dosari, Nasser F.
Publisher: name: Manara - Qatar Research Repository
Year: 2022
Subjects: Clinical sciences

description: The worldwide spread of the coronavirus disease (COVID-19), the absence of medical treatment and vaccination, the delayed onset of symptoms, and the rapid human-to-human transmission have led the vast majority of countries to impose strict social distancing procedures. Whereas it appears that social distancing is an effective strategy for mitigating spread, it may also result in a variety of unintended negative consequences to individuals’ psychological well-being and mental health. During the peak of the COVID-19 pandemic, the present study examined associations among some demographic variables (gender, age, marital and working statuses, and having a family member or a friend infected with COVID-19), acceptance of social distancing, mood changes, and quality of life (QoL) in Qatar, a high-income Middle Eastern Arabic-speaking country. Older, married, and working participants were more accepting of social distancing than younger, unmarried, and non-working participants, respectively. Participants indicated that, during this time, they became more distressed, upset, scared, irritable, nervous, and afraid, and less inspired and determined. In a stark contrast, more individuals indicated that they became more interested, alert, and attentive, whereas higher percentages of participants reported feeling less guilty, hostile, and ashamed. Social distancing correlated positively with negative affect, whereas social avoidances correlated positively with positive affect and with physical, psychological, social, and environmental QoL. Finally, positive affect correlated positively, and negative affect correlated negatively, with these four domains of QoL. These results highlight the need for public health and clinical providers to consider peoples’ psychological well-being and mental health during the COVID-19 pandemic.Other Information Published in: International Journal of Mental Health and Addiction
 License: https://creativecommons.org/licenses/by/4.0
See article on publisher's website: http://dx.doi.org/10.1007/s11469-021-00536-9
Dirty on the go? Data quality in online surveys between PC and mobile devices
Creators: name: Meier, Raffael
name: Gwerder, Nina
Publisher: name: figshare
Year: 2023
Subjects: Sociology not elsewhere classified
Marketing research methodology

description: Our comparative analysis of anonymized mobile and non-mobile participation in a large Swiss customer survey from 2022 and 2023 reveals: Mobile responses fall slightly in terms of data quality. Straightliners and too short text responses pose a challenge.
Euro-Solar Programme. Renewable Energy Kits to Fight Poverty
Creators: name: Cendagorta, M.
name: Rodríguez, J.
name: López-Manzanares, L.
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; 4016-4018
description: EURO-Solar is a regional programme of the European Commission, focused on the 8 poorest countries
in Latin America. Its main objective is the development of 600 electrification facilities, either photovoltaic or hybrid
wind / photovoltaic in rural settlements of Central and South America. Along with electricity, equipment will be
provided focusing on the improvement of local people, both at educational and health levels. All these elements
toghether, power generation and loads, known as “kit” were designed during 2007 and 2008, and tested in ITER
facilities, in Granadilla, Tenerife, since late 2008. Test results allow for optimism about their behavior once systems
were installed at the Programme beneficiary communities, civil works will begin this year.
An overview of the environmental pollution and health effects associated with waste landfilling and open dumping
Creators: name: Siddiqua, Ayesha
name: Hahladakis, John N.
name: Al-Attiya, Wadha Ahmed K A
Publisher: name: Manara - Qatar Research Repository
Year: 2022
Subjects: subject: Environmental engineering
subject: FOS: Environmental engineering
subject: Pollution and contamination

description: Landfilling is one of the most common waste management methods employed in all countries alike, irrespective of their developmental status. The most commonly used types of landfills are (a) municipal solid waste landfill, (b) industrial waste landfill, and (c) hazardous waste landfill. There is, also, an emerging landfill type called “green waste landfill” that is, occasionally, being used. Most landfills, including those discussed in this review article, are controlled and engineered establishments, wherein the waste ought to abide with certain regulations regarding their quality and quantity. However, illegal and uncontrolled “landfills” (mostly known as open dumpsites) are, unfortunately, prevalent in many developing countries. Due to the widespread use of landfilling, even as of today, it is imperative to examine any environmental- and/or health-related issues that have emerged. The present study seeks to determine the environmental pollution and health effects associated with waste landfilling by adopting a desk review design. It is revealed that landfilling is associated with various environmental pollution problems, namely, (a) underground water pollution due to the leaching of organic, inorganic, and various other substances of concern (SoC) contained in the waste, (b) air pollution due to suspension of particles, (c) odor pollution from the deposition of municipal solid waste (MSW), and (d) even marine pollution from any potential run-offs. Furthermore, health impacts may occur through the pollution of the underground water and the emissions of gases, leading to carcinogenic and non-carcinogenic effects of the exposed population living in their vicinity. Graphical abstractOther Information Published in: Environmental Science and Pollution Research
 License: https://creativecommons.org/licenses/by/4.0
See article on publisher's website: http://dx.doi.org/10.1007/s11356-022-21578-z
Modified os sepiae of Sepiella inermis as a low cost, sustainable, bio-based adsorbent for the effective remediation of boron from aqueous solution
Creators: name: Bhagyaraj, Sneha
name: Al-Ghouti, Mohammad A.
name: Khan, Mariam
name: Kasak, Peter
name: Krupa, Igor
Publisher: name: Manara - Qatar Research Repository
Year: 2022
Subjects: subject: Environmental engineering
subject: FOS: Environmental engineering
subject: Pollution and contamination

description: The occurrence of boron in low concentration is essential; however, a higher concentration of boron source in water has a toxic effect on humans as well as have retard effect on agricultural plant growth. Thus, the affordable and facile method to remediate water from higher boron concentrations is highly demanded. This report explores the ability of naturally occurring sustainable bio-waste os sepiae (cuttlefish bone, CFB) as an effective adsorbent for the removal of boron from water. Chemical activation of the os sepiae powder was examined to improve the efficiency of boron adsorption. A batch adsorption study for boron considering various parameters such as chemical modification of os sepiae, pH, initial boron concentration, and the temperature was scrutinized. Untreated (CFB), alkali-treated (CFB-D) and acid-treated (CFB-A) os sepiae powders were investigated and the adsorption capacities reached up to 53.8 ± 0.04 mg/g, 66.4 ± 0.02 mg/g and 69.8 ± 0.02 mg/g, respectively, at optimal pH 8 and 25 °C. Boron adsorption by CFB, CFB-D, and CFB-A were well fitted with the linear Freundlich adsorption isotherm model with a correlation coefficient of 99.4%, 99.8%, and 99.7% respectively. Thermodynamic parameters indicated that the adsorption of boron by CFB is an exothermic process and more feasible at a lower temperature around 25 °C. Moreover, detailed morphological and chemical characterization of the influence of adsorbed boron on adsorbents was conducted and discussed. The Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) analysis spectra confirms the involvement of various functional groups including amino, carbonate (CO3)2−, and hydroxyl groups on the adsorbent in the adsorption mechanisms for boron removal. The results indicate that CFB can be an excellent example for the recycling and reuse of biowaste for water remediation.Other Information Published in: Environmental Science and Pollution Research
 License: https://creativecommons.org/licenses/by/4.0
See article on publisher's website: http://dx.doi.org/10.1007/s11356-022-20578-3
Development of blend PEG-PES/NMP-DMF mixed matrix membrane for CO2/N2 separation
Creators: name: Mahenthiran, Ashvin Viknesh
name: Jawad, Zeinab Abbas
name: Chin, Bridgid Lai Fui
Publisher: name: Manara - Qatar Research Repository
Year: 2022
Subjects: subject: Environmental engineering
subject: FOS: Environmental engineering
subject: Pollution and contamination

description: The carbon dioxide (CO2) separation technology has become a focus recently, and a developed example is the membrane technology. It is an alternative form of enhanced gas separation performance above the Robeson upper bound line resulting in the idea of mixed matrix membranes (MMMs). With attention given to membrane technologies, the MMMs were fabricated to have the most desirable gas separation performance. In this work, blend MMMs were synthesised by using two polymers, namely, poly(ether sulfone) (PES) and poly (ethylene glycol) (PEG). These polymers were dissolved in blend N-methyl-2-pyrrolidone (NMP) and dimethylformamide (DMF) solvents with the functionalised multi-walled carbon nanotubes (MWCNTs-F) fillers by using the mixing solution method. The embedding of the pristine MWCNTs and MWCNTs-F within the new synthesised MMM was then studied towards CO2/N2 separation. In addition, the optimisation of the loading of MWCNTs-F for blend MMM for CO2/N2 separation was also studied. The experimental results showed that the functionalised MWCNTs (MWCNTs-F) were a better choice at enhancing gas separation compared to the pristine MWCNTs (MWCNTs-P). Additionally, the effects of MWCNTs-F at loadings 0.01 to 0.05% were studied along with the polymer compositions for PES:PEG of 10:20, 20:20 and 30:10. Both these parameters of study affect the manner of gas separation performance in the blend MMMs. Overall, the best performing membrane showed a selectivity value of 1.01 + 0.05 for a blend MMM (MMM-0.03F) fabricated with 20 wt% of PES, 20 wt% of PEG and 0.03 wt% of MWCNTs-F. The MMM-0.03F was able to withstand a pressure of 2 bar, illustrating its mechanical strength and ability to be used in the post combustion carbon capture application industries where the flue gas pressure is at 1.01 bar.Other Information Published in: Environmental Science and Pollution Research
 License: https://creativecommons.org/licenses/by/4.0
See article on publisher's website: http://dx.doi.org/10.1007/s11356-022-20168-3
Ambient RF Energy Harvesting in Ultra-Dense Small Cell Networks: Performance and Trade-offs
Creators: name: Ghazanfari, Amin
name: Tabassum, Hina
name: Hossain, Ekram
Publisher: name: arXiv
Year: 2015
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: In order to minimize electric grid power consumption, energy harvesting from ambient RF sources is considered as a promising technique for wireless charging of low-power devices. To illustrate the design considerations of RF-based ambient energy harvesting networks, this article first points out the primary challenges of implementing and operating such networks, including non-deterministic energy arrival patterns, energy harvesting mode selection, energy-aware cooperation among base stations (BSs), etc. A brief overview of the recent advancements and a summary of their shortcomings are then provided to highlight existing research gaps and possible future research directions. To this end, we investigate the feasibility of implementing RF-based ambient energy harvesting in ultra-dense small cell networks (SCNs) and examine the related trade-offs in terms of the energy efficiency and signal-to-interference-plus-noise ratio (SINR) outage probability of a typical user in the downlink. Numerical results demonstrate the significance of deploying a mixture of on-grid small base stations (SBSs)~(powered by electric grid) and off-grid SBSs~(powered by energy harvesting) and optimizing their corresponding proportions as a function of the intensity of active SBSs in the network.
description: IEEE Wireless Communications, to appear