cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Fabrication and characterization of dual-layer hollow fibre membranes incorporating poly(citric acid)-grafted GO with enhanced antifouling properties for water treatment
Creators: name: Said, Noresah
name: Lau, Woei Jye
name: Abidin, Muhammad Nidzhom Zainol
name: Mansourizadeh, Amir
name: Ismail, Ahmad Fauzi
Publisher: name: Taylor & Francis
Year: 2023
Subjects: Biochemistry
Space Science
Physical Sciences not elsewhere classified
Medicine
Cell Biology
Biotechnology
Environmental Sciences not elsewhere classified
Chemical Sciences not elsewhere classified

description: Membrane fouling during the filtration process is a perennial issue and could lead to reduced separation efficiency. In this work, poly(citric acid)-grafted graphene oxide (PGO) was incorporated into a matrix of single-layer hollow fibre (SLHF) and dual-layer hollow fibrr (DLHF) membranes, respectively, aiming to improve membrane antifouling properties during water treatment. Different loadings of PGO ranging from 0 to 1 wt% were first introduced into the SLHF to identify the best PGO loading for the DLHF preparation with its outer layer modified by nanomaterials. The findings showed that at the optimized PGO loading of 0.7 wt%, the resultant SLHF membrane could achieve higher water permeability and bovine serum albumin rejection compared to the neat SLHF membrane. This is due to the improved surface hydrophilicity and increased structural porosity upon incorporation of optimized PGO loading. When 0.7 wt% PGO was introduced only to the outer layer of DLHF, the cross-sectional matrix of the membrane was altered, forming microvoids and spongy-like structures (more porous). Nevertheless, the BSA rejection of the membrane was improved to 97.7% owing to an inner selectivity layer produced from a different dope solution (without the PGO). The DLHF membrane also demonstrated significantly higher antifouling properties than the neat SLHF membrane. Its flux recovery rate is 85%, i.e. 37% better than that of a neat membrane. By incorporating hydrophilic PGO into the membrane, the interaction of the hydrophobic foulants with the membrane surface is greatly reduced.
Weak radiative hyperon decays
Creators: name: Zenczykowski, P.
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The problem of weak radiative hyperon decays (WRHD) is reviewed. With the recent measurement of the $Ξ^0 \to Λγ$ asymmetry confirming Hara's theorem, implications from its violation in low-energy theoretical approaches are discussed. It is shown how an underlying symmetry link should be formulated for a successful description of both nonleptonic and radiative weak hyperon decays. The sign of the $Ξ^0 \to Λγ$ asymmetry and the overall size of parity-violating WRHD amplitudes together lead to the resolution of the old S:P problem in nonleptonic decays.
description: 5 pages, uses espcrc2.sty; invited talk at the 5th International Conference on Hyperons, Charm and Beauty Hadrons (BEACH2002), University of british Columbia, Vancouver, June 25-29,2002
Unsaturation and Liquefaction: Case Study of Dense Sand
Creators: name: K.H. Tran, S. Imanzadeh
Publisher: name: Southeast Asian Geotechnical Society
Year: 2022
Subjects: Hostun RF sand
Skempton parameter B
Cyclic loading
Liquefaction
Unsaturation

description: The Geotechnical Engineering Journal of the SEAGS & AGSSEA, 53, 4, pp 41-48
Clinical implications for counseling international students
Creators: name: Rabinowitz, Karina Dawn
name: 0000-0003-3717-0567
Publisher: name: The University of Texas at Austin
Year: 2019
Subjects: International students
Counseling
International student challenges
International study
International student mental health
International student psychology
International college students
International university students
International student acculturative stress
International student language barriers
International student academic challenges
International student support system
International student discrimination
International student financial concerns

description: The present paper presents an overview of the challenges international students report commonly facing during international study, the impact these experiences have on the mental health of the international student community, and clinical implications of these factors for counseling with international students in a college and university counseling center context. Common concerns for international students such as acculturative stress, language barriers, academic challenges, lack of support system discrimination, and financial concerns are reviewed. The mental health ramifications related to these experiences as well as the barriers to help seeking reported by international students are connected to suggestions for practice that may improve the experiences of clinicians, international students, and university faculty and staff alike
Kink-antikink interactions in the double sine-Gordon equation and the problem of resonance frequencies
Creators: name: Gani, V. A.
name: Kudryavtsev, A. E.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Condensed Matter (cond-mat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We studied the kink-antikink collision process for the "double sine-Gordon" (DSG) equation in 1+1 dimensions at different values of the potential parameter $R>0$. For small values of $R$ we discuss the problem of resonance frequencies. We give qualitative explanation of the frequency shift in comparison with the frequency of the discrete level in the potential well of isolated kink. We show that in this region of the parameter $R$ the effective long-range interaction between kink and antikink takes place.
description: 9 pages, LaTeX, 4 figures (eps)
New Observables in Inclusive Production of Quarkonia
Creators: name: Lansberg, Jean-Philippe
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: After an introduction motivating the study of quarkonium production, we review the recent developments in the phenomenology of quarkonium production in inclusive scatterings of hadrons and leptons. We naturally address data and predictions relevant for the LHC, the Tevatron, RHIC, HERA, LEP, B factories and EIC. An up-to-date discussion of the contributions from feed downs within the charmonium and bottomonium families as well as from b hadrons to charmonia is also provided. This contextualises an exhaustive overview of new observables such as the associated production along with a Standard Model boson (photon, W and Z), with another quarkonium, with another heavy quark as well as with light hadrons or jets. We address the relevance of these reactions in order to improve our understanding of the mechanisms underlying quarkonium production as well as the physics of multi-parton interactions, in particular the double parton scatterings. An outlook towards future studies and facilities concludes this review.
description: LaTeX, 151 pages; 71 figures, 13 tables. Version accepted for publication in Physics Reports
title: Jean-Claude Melchior
Creators: name: Leibowitch, Jacques (1942-2020)
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020

description: 1 fichier (3 pages)
Absence of initial singularities in superstring cosmology
Creators: name: Jain, Sanjay
Publisher: name: arXiv
Year: 1997
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In a universe whose elementary constituents are point particles there does not seem to be any obvious mechanism for avoiding the initial singularities in physical quantities in the standard model of cosmology. In contrast in string theory these singularities can be absent even at the level where spacetime is treated classically. This is a consequence of the basic degrees of freedom of strings in compact spaces, which necessitate a reinterpretation of what one means by a very small universe. We discuss the basic degrees of freedom of a string at the classical and quantum level, the minimum size of strings (string uncertainty principle), the t-duality symmetry, and string thermodynamics at high energy densities, and then describe how these considerations suggest a resolution of the initial singularity problem. An effort has been made to keep this writeup self-contained and accessible to non-string theorists.
description: 20 pages, revtex, including 2 PostScript figures appended using epsf. Based on talk given at the Conference on Big Bang and Alternative Cosmologies: A Critical Appraisal, Bangalore, India, January 1997
Taraxacum campylodes G. E. Haglund
Creators: name: Zhou, Ya-Dong
name: Mwachala, Geoffrey
name: Hu, Guang-Wan
name: Wang, Qing-Feng
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Asterales
Asteraceae
Taraxacum
Taraxacum campylodes

description: * Taraxacum campylodes G.E.Haglund  —
Habit: Herb.
Habitat: LMDF. Distribution: IV.
Voucher: N/A.
References: Bussmann (1993, 1994).
description: Published as part of Zhou, Ya-Dong, Mwachala, Geoffrey, Hu, Guang-Wan & Wang, Qing-Feng, 2022, Annotated checklist of the vascular plants of Mount Kenya, East Africa, pp. 1-108 in Phytotaxa 546 (1) on page 97, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464
Розподіл інваріантної міри хаотичного аттрактора для неоднорідних систем
Creators: name: , Лозован
name: Сокульський
name: Свелеба
name: Катеринчук
name: Куньо
name: Карпа
name: Шмигельський
Publisher: name: Zenodo
Year: 2019
Subjects: Розподіл інваріантної міри
Показники Ляпунова
Гіперхаос
Диференціальні рівняння 4 порядку

description: В. Лозован,В. Сокульського, С. Свелеба, І. Катеринчук, І. Куньо, І. Карпа, Я. Шмигельський // Розподіл інваріантної міри хаотичного аттрактора для неоднорідних систем // Електроніка та інформаційні технології // IX-ої Українсько-польська науково - практична конференція 28–31 серпня 2017 р. // Львів – Чинадієво, Україна. С. 6-9. DOI: http://doi.org/10.5281/zenodo.3435067
The Determinants of National College Entrance Exam Performance in China - With an Analysis of Private Tutoring
Creators: Zhang, Yu
Publisher: name: Columbia University
Year: 2011
Subjects: Education and state
School management and organization
Labor economics
Education, Secondary

description: This study ascertains the effects of private tutoring and other factors on student performance in the National College Entrance Examination (NCEE) in China, using first hand data collected in a typical Chinese city in 2010. Three identification strategies including the instrumental variable model, the 3-level hierarchical linear model, and the Heckman two-stage method are applied in order to account respectively for the endogeneity of private tutoring participation, hierarchical data structure, and non-random high school selection bias. The quantile regression and the analysis of the urban and rural subsamples identify heterogeneous effects of various education factors on student performance. The study finds that the High School Entrance Exam (HSEE) score, good study habits and ability, parents caring about study and respecting the child, key class, the HSEE admission line, rich school activities, and the administrative style of high authority and accountability are significant and positive determinants of the NCEE score across subjects and models. Socioeconomic status has a significant and positive effects on the NCEE English score and total score, but the effect size is relatively small. Female students perform better than male students in Chinese and English, and there is no gender gap in math or in the total score. Private tutoring generally has no effect on the NCEE score for the whole sample, but may have a positive effect on low performing urban students and a negative effect on rural students who are not at the top. Rural students may face limited access to high quality private tutoring compared with their urban counterparts. Lower HSEE score, a higher SES, and more school level educational inputs are positive predictors of private tutoring participation. By using primary data, this study is the first to provide a comprehensive investigation of the effects of three levels (individual, class, and school) of factors on the NCEE performance in China. It includes factors such as the parental styles of educating their child and the school administrative styles that were seldom considered in previous studies in China. This also is the first to investigate the effect of private tutoring on student performance in China. Detailed information on the private tutoring industry is documented for the first time. The findings of this study have significant implications for education decision making by public policymakers and parents.
Remediation of soils contaminated with total petroleum hydrocarbons through soil washing with surfactant solutions
Creators: name: Caetano, Gabriela
name: de Matos Machado, Remígio
name: Correia, Maria Joana Neiva
name: Marrucho, Isabel Maria
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biochemistry
subject: Physical Sciences not elsewhere classified
subject: Microbiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Geology
subject: FOS: Earth and related environmental sciences
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Science Policy
subject: Plant Biology

description: Soil fulfils vital functions for life on Earth and so, just like water and air, its protection from all sources of contamination is a major concern. However, the extensive use of petroleum derived products, either as energy sources or as commodities, leads to important environmental liabilities. Ex situ soil washing is a technology to concentrate contaminants, allowing soil cleaning and the reuse of extracted petroleum derived products. This work focuses on the optimization of ex situ soil washing process using surfactants, introducing an evaluation of the washing solution recycling and its after use safe disposal, promoting the reduction of raw materials, energy and water resources costs. Two surfactants, sodium dodecyl sulphate (SDS) and polyoxyethylene sorbitan monooleate (Tween 80), were tested in the decontamination of an artificially contaminated soil with engine lubricant oil waste. The optimization of the washing conditions, such as stirring speed, liquid–solid ratio, number of washing stages, and surfactant concentration, was carried out using a design of experiments (DOE) software, so that the maximum extraction efficiency of total petroleum hydrocarbons (TPHs) was achieved. A TPH removal efficiency of (80.7 ± 3.2)% was obtained with Tween 80 after 5 h of washing and (90.7 ± 2.8)% with SDS after 2 h at 200 rpm on an orbital shaker with a liquid to solid ratio (L/S) of 15. The potential for reuse of the washing solutions was evaluated. Finally, the discharge of the washing solution was considered using activated carbon to remove the surfactants and ensure its safe disposal.
The mechanism of doping and the features of phase diagrams of HTSC cuprates and ferropnictides
Creators: name: Mitsen, Kirill
name: Ivanenko, Olga
Publisher: name: arXiv
Year: 2019
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We propose a generalized model of electronic structure modification in HTSC cuprates and ferropnictides under doping. In this model the role of doping consists in only a local change in the electronic structures of the parent phases of cuprates and ferropnictides due to the formation of trion complexes comprising a doped carrier localized in unit cell and charge transfer (CT) excitons around it. These CT excitons emerge in CuO4 or AsFe4 plaquettes in the CuO2 or FeAs basal planes (CT plaquettes) under the influence of doped carrier, restricting its itinerancy. As the dopant concentration is increased, CT plaquettes combine into clusters of the so called CT phase. It is this CT phase that is related in the model to the HTSC phase. In support of this assumption, we determined the ranges of dopant concentrations conforming to the existence of percolation clusters of the CT phase; these ranges were shown to coincide with the positions of the superconducting domes on the phase diagrams of these compounds. The model also perfectly describes subtle features of the phase diagrams of various cuprates and ferropnictides including the 1/8 anomaly, narrow peaks in the dependences of the London penetration depth on the concentration of the dopant, and other specific features. The mechanism of the generation of free carriers in the CT phase, provided by intrinsic self-doping, was considered. The mechanism is not directly related to external doping, but is due to the interaction of band electrons with so called Heitler-London (HL) centres inherently existing in the percolation cluster of CT phase and representing pairs of adjacent CuO4 or AsFe4 CT plaquettes in the CuO2 or FeAs basal planes. Material in CT phase was shown to represent a medium, in which the mechanism of excitonic superconductivity, specified by the interaction of band electrons with HL centres, can be realized.
description: 22 pages, 7 figures
Separation and recycling of Au and Ag from waste light-emitting diodes
Creators: name: Zhang, Anqi
name: Li, Shanglue
name: Zhuang, Xuning
name: Song, Xiaolong
name: Gu, Weihua
name: Bai, Jianfeng
name: Wang, Jingwei
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Cell Biology
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Biological Sciences not elsewhere classified

description: Waste light-emitting diodes (LEDs) contain rare and precious metals which have attracted wide attention due to their high resource. In this study, experimental research was conducted on the separation and recycling of Au and Ag from LEDs. Firstly, thermal treatment and sieving were done to separate and enrich the metals in LEDs. With the constant heating rate of 10°C/min to 450°C under air atmosphere, the metals could be effectively separated from organics and the rare metals Au and Ag mainly concentrate in particles with a diameter ≤600 μm, whose concentration is about 1816 and 1429 mg/kg, respectively. Then, a mix-acid system of HCl-CH3COOH was introduced to leach Au and Ag from the enriched sample. The results show that the HCl-CH3COOH system could effectively leach Au and Ag, and the leaching performance of Au and Ag can reach 95.4% and 96.2%, respectively under the recommended conditions (total acid concentration 5 mol/L, HCl:CH3COOH = 4:1, leaching temperature 80°C, solid–liquid ratio 1:100, leaching time 5 h). The study can provide a new option for recycling of waste LEDs, which also provide a more environment-friendly method for Au and Ag leaching from industrial wastes.
title: Курс высшей математики для гуманитарных направлений
title: Учебное пособие
titleType: Subtitle
Creators: name: Алексеев Г.В.
name:  Холявин И.И.
Publisher: name: Ай Пи Эр Медиа
Year: 2019

description: В кратком, но достаточном объеме с необходимой строгостью изложены основные положения высшей математики для гуманитарных направлений подготовки высших учебных заведений. Особенностью учебного пособия является наличие примеров решения разнообразных задач с помощью пакета прикладных программ Mathcad. Сегодня при построении цифровой экономики трудно представить область знаний и деятельности современного специалиста без умения использовать в своей работе навыки компьютерной обработки материалов при решении тех или иных производственных и социальных задач. Подготовлено в соответствии с Федеральным государственным образовательным стандартом высшего образования. Предназначено бакалаврам и магистрам, обучающимся по направлению 39.03.02 «Социальная работа» при изучении дисциплины «Высшая математика». Может быть полезно и для других направлений гуманитарной подготовки, а также практикам, работающим с большими массивами разнообразных цифровых данных.
Adiabatic Quantum Transistors
Creators: name: Flammia, Steven
Publisher: name: The University of British Columbia
Year: 2016

description: The invention of the transistor was a watershed moment in the history of computing: it provided a logic element that was naturally robust to noise and error. Quantum computers offer the potential to exponentially speed up some computational problems, but have not been built in large part because quantum information is notoriously fragile and quickly becomes classical information in the presence of noise. In theory, the quantum threshold theorem asserts that these difficulties can be circumvented, but in practice the requirements of this theorem are daunting. Here we propose a novel method for building a fault-tolerant quantum computer which much more closely mimics the classical transistor. We show how a suitably engineered material can be made to quantum compute by the simple application of an external field to the sample. This construction opens a new path toward the engineering of a large-scale quantum computer with design and control advantages o! ver prior state of the art. Just as a transistor works by causing a phase transition between an insulating and conducting phase conditional on an external electric field, the applied field here causes a phase transition at the end of which a quantum gate has been enacted and quantum information propagated across the device.
The Determinants of College Graduates' Migration Decision and Its Impact on Starting Salaries in China
Creators: Shi, Yan
Publisher: name: Columbia University
Year: 2015
Subjects: Education
Economics

description: This study examines the determinants of college graduates' work migration decision and explores its impact on college graduates' starting salaries in China, using most recent nationally representative CSLM 2011 survey data.
                  This study is the first one that incorporates student characteristics, institution attributes and regional characteristics (both economic and non-economic factors) in the regression analysis on determinants of work migration in the Chinese context. When investigating work migration's effects on graduates' starting salaries, in addition to the OLS model, the study also employs alternative identification strategies including instrumental variable method and propensity score matching method to account for the potential endogeneity of work migration and reduce selection bias. In addition, this study addresses sample selection issue with Heckman correction technique.
                  The results reveal that the following variables have a significant positive impact on college graduates' work migration: study migration, science or engineering major, student leader in high school, passed CET4, passed CET6, engineering-concentrated institution, from 985 institutions, and from 211 institutions. College graduates who possess the above individual characteristics or are from the above institutions are more likely to migrate to work. Meanwhile, this study also finds that female, provincial GDP per capita, provincial population, provincial area size, and provincial ECI score are significant and negative determinants of work migration.
                  In terms of work migration's impact on college graduates' starting salaries, the weighted and unweighted OLS regression analyses reveal that new graduates who decide to migrate for work enjoy a 9.9% and 8.6% starting monthly salary premium over those graduates who do not do so, respectively. Three different PSM schemes are used to conduct PS-adjusted regressions and the results also show that work migration has a statistically significant positive impact on graduates' starting salaries. Consistent with the PSM findings, the magnitude of the coefficient estimate for work migration in IV regression is larger than the OLS estimate. Specifically, for the regression using two instrumental variables, the results find that college graduates who decide to migrate for work have a 15.8% higher starting salary compared to those who would not. These findings of this study have important implications for educational policy makers and higher education institutions in China.
Holomorphic Methods in Mathematical Physics
Creators: name: Hall, Brian C.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: This set of lecture notes gives an introduction to holomorphic function spaces as used in mathematical physics. The emphasis is on the Segal-Bargmann space and the canonical commutation relations. Later sections describe more advanced topics such as the Segal-Bargmann transform for compact Lie groups and the infinite-dimensional theory.
description: Final version
Bezpartochnyi M., Britchenko I., Vazov R. Agriculture in Bulgaria: from European Union accession to the COVID-19 pandemic/ Concepts, strategies and mechanisms of economic systems management in the context of modern world challenges: scientific monograph // VUZF University of Finance, Business and Entrepreneurship. – Sofia: VUZF Publishing House“St. Grigorii Bogoslov”, 2021. –p. 187-206.
Creators: name: Britchenko, Igor
name: Bezpartochnyi, Maksym
name: Radostin, Vazov
Publisher: name: figshare
Year: 2021
Subjects: subject: 70101 Agricultural Land Management
subject: FOS: Other agricultural sciences
subject: 140201 Agricultural Economics
subject: FOS: Economics and business
subject: Economics

description: Agriculture in Bulgaria is one of sectors country’s economy in which significant changes have taken place over the past three decades: in the field of economic relations, the structure of farms, the size and production activity of enterprises, income and profit. These changes are due to the agrarian reform carried out in the 1990s, accession Bulgaria to the European Union, and the implementation of measures and mechanisms of the Common Agricultural Policy (CAP). In the period before accession Bulgaria to the European Union (1997-2007) there were significant changes in the organization of agricultural sector of the economy, the formation of statistics, harmonization with European agricultural legislation, adaptation to dynamic changes in the environment. During the period of accession Bulgaria to the European Union, the conditions for functioning of agriculture relate to the formation of necessary mechanisms (organizational, financial, administrative, legal, informational, etc.) and successful adaptation to new realities. Bulgaria’s agriculture underwent significant changes during the COVID-19 pandemic, prompting the developing of appropriate financial support policies by the state and the European Union. For Bulgaria, agriculture is an important sector of the national economy for several reasons. First, it provides the population with food, on the quantitative and qualitative measurement of which depends the national food security of the country, raw materials for the food industry and resources for export. Secondly, favorable climatic conditions are suitable for growing various crops and farm animals. Third, agriculture accounts for 11.0% of gross domestic product, 12.5% of gross value added and employs 25.1% of the population.
A variational characterization of the risk-sensitive average reward for controlled diffusions on $\mathbb{R}^d$
Creators: name: Arapostathis, Ari
name: Biswas, Anup
name: Borkar, Vivek S.
name: Kumar, K. Suresh
Publisher: name: arXiv
Year: 2019
Subjects: subject: Analysis of PDEs (math.AP)
subject: Optimization and Control (math.OC)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: Primary 60J60, Secondary 60J25, 35K59, 35P15, 60F10

description: We address the variational formulation of the risk-sensitive reward problem for non-degenerate diffusions on $\mathbb{R}^d$ controlled through the drift. We establish a variational formula on the whole space and also show that the risk-sensitive value equals the generalized principal eigenvalue of the semilinear operator. This can be viewed as a controlled version of the variational formulas for principal eigenvalues of diffusion operators arising in large deviations. We also revisit the average risk-sensitive minimization problem and by employing a gradient estimate developed in this paper, we extend earlier results to unbounded drifts and running costs.
description: 29 pages
Chemical oxygen demand and tannin/lignin removal from paper mill wastewater by electrocoagulation combined with peroxide and hypochlorite treatments
Creators: name: Caglak, Abdulkadir
name: Sari-Erkan, Hanife
name: Engin, Guleda Onkal
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Space Science
subject: Physical Sciences not elsewhere classified
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Marine Biology
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Plant Biology

description: The present investigation sought to assess the practicality of utilizing a combined pre-treatment approach comprising electrocoagulation, peroxide, and hypochlorite treatments for the removal of chemical oxygen demand (COD) and tannin/lignin from paper mill wastewater. The study aimed to optimize the operating parameters with a view to maximizing the removal efficiencies while minimizing energy consumption. A pair of iron electrodes were used as anode and cathode in the study, and the main operating parameters were determined as initial pH, applied current, treatment time and oxidant dosage/COD ratio. Response surface methodology (RSM) was used to evaluate the effect of these parameters on COD and tannin/lignin removals. The primary findings of the investigation indicated that the integration of electrocoagulation with peroxide and hypochlorite treatments exhibited efficacy in removing COD, tannin/lignin, colour, phenol, and turbidity from paper mill wastewater. The optimized conditions resulted in COD removal efficiencies of 48.13 ± 2.2% and 29.53 ± 1.4% for EC with H2O2 and Ca(OCl)2, respectively. Tannin/lignin removal efficiencies were 92.59 ± 3.6% and 94.09 ± 1.8% for EC-H2O2 and EC-Ca(OCl)2, respectively. The specific energy consumption (SEC) values showed that EC-Ca(OCl)2 required 7 times more energy than EC-H2O2 for removing 1 kg COD. The principal deduction drawn from the study was that EC-H2O2 pre-treatment demonstrated superior COD removal efficiency and lower energy consumption, while EC-Ca(OCl)2 pre-treatment exhibited greater efficiency in removing toxic and recalcitrant pollutants. In future studies, it would be useful to conduct research to increase COD removal efficiency in addition to tannin/lignin removal in EC-Ca(OCl)2 process.
Reply to: "Converting standardized mean differences to dichotomous outcomes: A comment on the Cochrane review ‘Intra-articular corticosteroid for knee osteoarthritis’"
Creators: name: Jüni, Peter
name: Rutjes, Anne
name: Reichenbach, Stephan
name: Costa, Bruno Da
Publisher: name: figshare
Year: 2019
Subjects: subject: 110322 Rheumatology and Arthritis
subject: FOS: Clinical medicine

description: Reply to: "Converting standardized mean differences to dichotomous outcomes: A comment on the Cochrane review ‘Intra-articular corticosteroid for knee osteoarthritis’"
The Dimension of the Planar Brownian Frontier is 4/3
Creators: name: Lawler, Gregory F.
name: Schramm, Oded
name: Werner, Wendelin
Publisher: name: arXiv
Year: 2000
Subjects: subject: Probability (math.PR)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 60J65

description: In a series of recent preprints, we have proven that with probability one the Hausdorff dimension on the outer boundary of planar Brownian motion is 4/3, confirming a conjecture by Mandelbrot. It is also shown that the Hausdorff dimension of the set of cut points is a.s. 3/4. The present paper is an expository outline of the arguments involved in the proof of these and related results.
Activated carbon based paste electrodes for the simultaneous and effective detection of divalent cadmium and lead ions in wastewater
Creators: name: Aravind, S. P.
name: Anandhu, T. P.
name: Jayakumar, Karthik
name: Appukuttan, Ashna
name: Krishna, B. Rahul
name: Amala, J.
name: Bhuvaneshwari, S.
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biochemistry
subject: Space Science
subject: Cell Biology
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Mathematical Sciences not elsewhere classified

description: Heavy metals (HM) have gained significant attention in terms of regular monitoring and detection owing to their toxicity, non-biodegradability, and persistence. Current techniques for detecting HM are expensive, cumbersome, and require sophisticated instruments and skilled labour. Hence, developing cheap, rapid, energy-efficient, and accurate sensors is imperative and electrochemical techniques have emerged as promising tools. The current study involves the fabrication of an electrochemical sensor for the concurrent detection of lead (Pb2+) and cadmium (Cd2+) ions using modified carbon paste electrodes (mCPE). Activated carbon (AC) with a BET surface area of 1118 m2 g−1 was obtained by chemical activation and thermal treatment of the waste rubberwood sawdust. AC-Graphite, AC-Reduced Graphene Oxide (RGO), and AC-RGO-Chitosan were the types of mCPEs that were utilised. The electrochemical behaviours and effects of pH, concentration, and scan rate were studied using Cyclic voltammetry (CV). Studies on detection were conducted using CV and linear sweep voltammetry. Although all the 3 mCPEs detected Cd2+ and Pb2+ in the simulated wastewater, the CPE with RGO and AC could detect Cd2+ as low as 10.91 µg L−1 and Pb2+ as low as 14.01 µg L−1. The work explored the possibility of using AC as a potential sustainable substitute for graphite in CPE.
title: Stachys macrantha (C. Koch) Stearn cv. 'Superba'
Creators: name: :None
Publisher: name: Universitätsbibliothek
Year: 2014
Subjects: subject: Digitale Pflanzenbilder: Sammlung Dietmar Brandes
subject: 580

description: Digitale Pflanzenbilder: Sammlung Dietmar Brandes
Distribution of the quantum mechanical time-delay matrix for a chaotic cavity
Creators: name: Brouwer, P. W.
name: Frahm, K. M.
name: Beenakker, C. W. J.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We calculate the joint probability distribution of the Wigner-Smith time-delay matrix $Q=-i\hbar S^{-1} \partial S/\partial ε$ and the scattering matrix $S$ for scattering from a chaotic cavity with ideal point contacts. Hereto we prove a conjecture by Wigner about the unitary invariance property of the distribution functional $P[S(ε)]$ of energy dependent scattering matrices $S(ε)$. The distribution of the inverse of the eigenvalues $τ_1,...,τ_N$ of $Q$ is found to be the Laguerre ensemble from random-matrix theory. The eigenvalue density $ρ(τ)$ is computed using the method of orthogonal polynomials. This general theory has applications to the thermopower, magnetoconductance, and capacitance of a quantum dot.
description: 17 pages, RevTeX; 3 figures included; To appear in Waves in Random Media (special issue on disordered electron systems)
Kinematic self-similar locally rotationally symmetric models
Creators: name: Sintes, A. M.
Publisher: name: arXiv
Year: 1997
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: A brief summary of results on kinematic self-similarities in general relativity is given. Attention is focussed on locally rotationally symmetric models admitting kinematic self-similar vectors. Coordinate expressions for the metric and the kinematic self-similar vector are provided. Einstein's field equations for perfect fluid models are investigated and all the homothetic perfect fluid solutions admitting a maximal four-parameter group of isometries are given.
description: 12 pages, LaTeX, final version, to appear in Class. Quantum Grav
Tithonia diversifolia A. Gray
Creators: name: Zhou, Ya-Dong
name: Mwachala, Geoffrey
name: Hu, Guang-Wan
name: Wang, Qing-Feng
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Asterales
Asteraceae
Tithonia
Tithonia diversifolia

description: * Tithonia diversifolia (Hemsl.) A.Gray  —
Habit: Herb.
Habitat: LMWF, LMDF. Distribution: IV.
 Voucher: Meru Forest, Alt. 1 750 m, 28 Jul. 2014, SAJIT 002258 (HIB).
Reference: Agnew (2013).
description: Published as part of Zhou, Ya-Dong, Mwachala, Geoffrey, Hu, Guang-Wan & Wang, Qing-Feng, 2022, Annotated checklist of the vascular plants of Mount Kenya, East Africa, pp. 1-108 in Phytotaxa 546 (1) on page 97, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464
Prediction model for biochar energy potential based on biomass properties and pyrolysis conditions derived from rough set machine learning
Creators: name: Tang, Jia Yong
name: Chung, Boaz Yi Heng
name: Ang, Jia Chun
name: Chong, Jia Wen
name: Tan, Raymond R.
name: Aviso, Kathleen B.
name: Chemmangattuvalappil, Nishanth G.
name: Thangalazhy-Gopakumar, Suchithra
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Molecular Biology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified

description: Biochar is a high-carbon-content organic compound that has potential applications in the field of energy storage and conversion. It can be produced from a variety of biomass feedstocks such as plant-based, animal-based, and municipal waste at different pyrolysis conditions. However, it is difficult to produce biochar on a large scale if the relationship between the type of biomass, operating conditions, and biochar properties is not understood well. Hence, the use of machine learning-based data analysis is necessary to find the relationship between biochar production parameters and feedstock properties with biochar energy properties. In this work, a rough set-based machine learning (RSML) approach has been applied to generate decision rules and classify biochar properties. The conditional attributes were biomass properties (volatile matter, fixed carbon, ash content, carbon, hydrogen, nitrogen, and oxygen) and pyrolysis conditions (operating temperature, heating rate residence time), while the decision attributes considered were yield, carbon content, and higher heating values. The rules generated were tested against a set of validation data and evaluated for their scientific coherency. Based on the decision rules generated, biomass with ash content of 11–14 wt%, volatile matter of 60–62 wt% and carbon content of 42–45.3 wt% can generate biochar with promising yield, carbon content and higher heating value via a pyrolysis process at an operating temperature of 425°C–475°C. This work provided the optimal biomass feedstock properties and pyrolysis conditions for biochar production with high mass and energy yield.
On the Minimal Size of a Generating Set of Lattices in Lie Groups
Creators: name: Gelander, Tsachik
name: Slutsky, Raz
Publisher: name: arXiv
Year: 2019
Subjects: subject: Group Theory (math.GR)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 22E40

description: We prove that the rank (that is, the minimal size of a generating set) of lattices in a general connected Lie group is bounded by the co-volume of the projection of the lattice to the semi-simple part of the group. This was proved by Gelander for semi-simple Lie groups and by Mostow for solvable Lie groups. Here we consider the general case, relying on the semi-simple case. In particular, we extend Mostow's theorem from solvable to amenable groups.
Why the quantum? Insights from classical theories with a statistical restriction
Creators: name: Spekkens, Robert
Publisher: name: The University of British Columbia
Year: 2016

description: A significant part of quantum theory can be obtained by postulating a single conceptual innovation relative to classical theories, namely, that agents face a fundamental restriction on what they can know about the physical state of any system. This talk will consider a particular sort of statistical restriction wherein only classical variables with vanishing Poisson bracket can be known simultaneously. When this principle is applied to a classical statistical theory of three-level systems (trits), the resulting theory is found to be operationally equivalent to the stabilizer formalism for qutrits. Applied to a classical theory of harmonic oscillators, it yields quantum mechanics restricted to quadrature eigenstates and observables. Finally, applied to a classical statistical theory of bits, it yields a theory that is almost equivalent to (but interestingly different from) the stabilizer formalism for qubits. I will discuss the significance of these results for the project of deriving the formalism of quantum theory from physical principles.
Decorrelation of a class of Gibbs particle processes and asymptotic properties of U-statistics
Creators: name: Beneš, Viktor
name: Hofer-Temmel, Christoph
name: Last, Günter
name: Večeřa, Jakub
Publisher: name: arXiv
Year: 2019
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60G55, 60F05, 60D05

description: We study a stationary Gibbs particle process with deterministically bounded particles on Euclidean space defined in terms of an activity parameter and non-negative interaction potentials of finite range. Using disagreement percolation we prove exponential decay of the correlation functions, provided a dominating Boolean model is subcritical. We also prove this property for the weighted moments of a U-statistic of the process. Under the assumption of a suitable lower bound on the variance, this implies a central limit theorem for such U-statistics of the Gibbs particle process. A byproduct of our approach is a new uniqueness result for Gibbs particle processes.
Fabrication and characterization of dual-layer hollow fiber membranes incorporating poly(citric acid) grafted GO with enhanced antifouling property for water treatment
Creators: name: Said, Noresah
name: Lau, Woei Jye
name: Abidin, Muhammad Nidzhom Zainol
name: Mansourizadeh, Amir
name: Ismail, Ahmad Fauzi
Publisher: name: Taylor & Francis
Year: 2023
Subjects: Biochemistry
Space Science
Physical Sciences not elsewhere classified
Medicine
Cell Biology
Biotechnology
Environmental Sciences not elsewhere classified
Chemical Sciences not elsewhere classified

description: Membrane fouling which occurs during filtration process is a perennial issue and could lead to reduced separation efficiency. In this work, poly(citric acid) grafted graphene oxide (PGO) was respectively incorporated into matrix of single-layer hollow fiber (SLHF) and duallayer hollow fiber (DLHF) membranes, aiming to improve membrane antifouling properties during water treatment. Different loading of PGO ranging from 0 to 1 wt% was first introduced into the SLHF in order to identify the best PGO loading for the DLHF preparation with its outer layer modified by nanomaterials. The findings showed that at the optimized PGO loading of 0.7 wt%, the resultant SLHF membrane could achieve both higher water permeability and bovine serum albumin rejection compared to the neat SLHF membrane. This is owing to the improved surface hydrophilicity and increased structural porosity upon the incorporation of optimized PGO loading. When 0.7 wt% PGO was introduced only to the outer layer of DLHF, the cross-sectional matrix of the membrane was altered, forming microvoids and spongy-like structure (more porous). Nevertheless, the BSA rejection of the membrane was improved to 97.7% owing to the presence of inner selectivity layer that was produced from different dope solution (without PGO addition). The DLHF membrane also demonstrated significantly higher antifouling properties compared to the neat SLHF membrane. Its flux recovery rate is 85%, i.e., 37% better than that of neat membrane. By incorporating hydrophilic PGO into the membrane, the interaction of the hydrophobic foulants with the membrane surface is greatly reduced.
Tolpis capensis Sch. Bip.
Creators: name: Zhou, Ya-Dong
name: Mwachala, Geoffrey
name: Hu, Guang-Wan
name: Wang, Qing-Feng
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Asterales
Asteraceae
Tolpis
Tolpis capensis

description: Tolpis capensis (L.) Sch.Bip.  —
Habit: Herb.
Habitat: LMDF, HZ; 1 700–3 300 m. Distribution: II.
 Voucher: Sirimon Track, Alt. 3 300 m, 2 Aug. 1975, Windels 133 (WAG).
References: Bussmann (1994), Agnew (2013).
description: Published as part of Zhou, Ya-Dong, Mwachala, Geoffrey, Hu, Guang-Wan & Wang, Qing-Feng, 2022, Annotated checklist of the vascular plants of Mount Kenya, East Africa, pp. 1-108 in Phytotaxa 546 (1) on page 97, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464
Tenthredo leucocera Mocsary 1909
Creators: name: Taeger, Andreas
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Tenthredinidae
Tenthredo
Tenthredo leucocera

description: Tenthredo leucocera Mocsáry, 1909
A junior subjective synonym of Tenthredo (Tenthredella) ferruginea Schrank, 1776. Synonymy by Conde (1935).
TYPES. Tenthredo leucocera Mocsáry, 1909: 36 –37. Syntype (s) Ƥ, “Sibiria orientalis: Ussuri (Kasakewitsh)”. 1Ƥ syntype ”Kasakewitsch” [= Russia: Khabarovskiy Kray: Kazakevichevo] examined.
description: Published as part of Taeger, Andreas, 2013, The type specimens of Tenthredo Linnaeus, 1758 (Hymenoptera: Tenthredinidae) deposited in the Hungarian Natural History Museum, pp. 201-244 in Zootaxa 3626 (2) on page 221, DOI: 10.11646/zootaxa.3626.2.1, http://zenodo.org/record/248049