cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Wrinkles of graphene on Ir(111): Macroscopic network ordering and internal multi-lobed structure
Creators: name: Petrović, Marin
name: Sadowski, Jerzy T.
name: Šiber, Antonio
name: Kralj, Marko
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The large-scale production of graphene monolayer greatly relies on epitaxial samples which often display stress-relaxation features in the form of wrinkles. Wrinkles of graphene on Ir(111) are found to exhibit a fairly well ordered interconnecting network which is characterized by low-energy electron microscopy (LEEM). The high degree of quasi-hexagonal network arrangement for the graphene aligned to the underlying substrate can be well described as a (non-Poissonian) Voronoi partition of a plane. The results obtained strongly suggest that the wrinkle network is frustrated at low temperatures, retaining the order inherited from elevated temperatures when the wrinkles interconnect in junctions which most often join three wrinkles. Such frustration favors the formation of multi-lobed wrinkles which are found in scanning tunneling microscopy (STM) measurements. The existence of multiple lobes is explained within a model accounting for the interplay of the van der Waals attraction between graphene and iridium and bending energy of the wrinkle. The presented study provides new insights into wrinkling of epitaxial graphene and can be exploited to further expedite its application.
description: 10 pages, 7 figures, 1 table, supplementary data available online
Phytoplankton community structure and water quality of Red River, Vietnam
Creators: name: Duong, Thi Thuy
name: Le, Thi Phuong Quynh
name: Ho, Tu Cuong
name: Vu, Thi Nguyet
name: Hoang, Thi Thu Hang
name: Dang, Dinh Kim
name: Lu, Xixi
Publisher: name: Journal of Vietnamese Environment
Year: 2014

description: This study aimed to describe the distribution and relative abundance of the phytoplankton obtained during the two seasons (rainy and dry seasons) from the Red river system. The water and phytoplankton samples were monthly collected during the year 2012 at four sampling stations along the Red River (Yen Bai, Vu Quang Hoa Binh, and Ha Noi) . Environmental variables (e.g. temperature, dissolved oxygen, pH, suspended solids, conductivity, TDS, NO3­-N, NH4­-N, PO4-P, Total Phosphorus; and DOC) and phytoplankton (e.g. cell density and relative abundant species) were analyzed. Six phytoplankton classes were identified with the Bacillariophyceae dominating in the phytoplankton community. A distinct seasonal variation in phytoplankton structure was observed with high cells density in dry season and low values in rainy season. PCA (Principal Component Analysis) showed that suspended solid factor that governed the temporal and spatial distribution of phytoplankton structure in the Red River system. Nghiên cứu này trình bày sự phân bố và độ phong phú tương đối của quần xã thực vật nổi vào mùa mưa và mùa khô trong hệ thống sông Hồng. Các mẫu nước và thực vật nổi được thu hàng tháng trong năm 2012 tại 4 điểm trên sông Hồng (Yên Bái, Vụ Quang, Hòa Bình và Hà Nội). Các thông số môi trường (nhiệt độ, lượng oxy hòa tan, pH, chất rắn lơ lửng, độ dẫn, TDS, NO3-N, NH4-N, PO4-P, T-P và DOC) và thực vật phù du (mật độ tế bào, độ phong phú tương đối) đã được phân tích. Sáu lớph tảo được được xác định với tảo silíc chiếm ưu thế trong quần xã thực vật phù du. Sinh khối thực vật đạt giá trị cao vào mùa khô trong khi thấp vào mùa mưa. Phân tích hợp phần chính cho thấy yếu tố chất rắn lơ lửng đóng vai trò quan trọng việc xác định biến động thời gian và không gian cấu trúc quần xã thực vật nổi trong hệ thống sông Hồng.
description: Journal of Vietnamese Environment, Vol 6 No 1 (2014)
Emotion dysregulation, self-harm and disordered eating: A protocol for a mechanistic investigation
Creators: name: Warne, Naomi
name: Heron, Jon
name: Mars, Becky
name: Solmi, Francesca
name: Moran, Paul
name: Stewart, Anne
name: Munafo, Marcus
name: Penton-Voak, Ian
name: Biddle, Lucy
name: Skinner, Andy
name: Gunnell, David
name: Bould, Helen
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Psychiatry and Psychology
subject: Medicine and Health Sciences
subject: disordered eating
subject: epidemiology
subject: longitudinal
subject: mediation
subject: self-harm

description: Protocol for analysis investigating emotion dysregulation, self-harm and disordered eating in data from the Avon Longitudinal Study of Parents and Children (ALSPAC).
The Generic Critical Behaviour for 2D Polymer Collapse
Creators: name: Nahum, Adam
Publisher: name: arXiv
Year: 2015
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The nature of the theta point for a polymer in two dimensions has long been debated, with a variety of candidates put forward for the critical exponents. This includes those derived by Duplantier and Saleur (DS) for an exactly solvable model. We use a representation of the problem via the $CP^{N-1}$ sigma model in the limit $N \rightarrow 1$ to determine the stability of this critical point. First we prove that the DS critical exponents are robust, so long as the polymer does not cross itself: they can arise in a generic lattice model, and do not require fine tuning. This resolves a longstanding theoretical question. However there is an apparent paradox: two different lattice models, apparently both in the DS universality class, show different numbers of relevant perturbations, apparently leading to contradictory conclusions about the stability of the DS exponents. We explain this in terms of subtle differences between the two models, one of which is fine-tuned (and not strictly in the DS universality class). Next, we allow the polymer to cross itself, as appropriate e.g. to the quasi-2D case. This introduces an additional independent relevant perturbation, so we do not expect the DS exponents to apply. The exponents in the case with crossings will be those of the generic tricritical $O(n)$ model at $n=0$, and different to the case without crossings. We also discuss interesting features of the operator content of the $CP^{N-1}$ model. Simple geometrical arguments show that two operators in this field theory, with very different symmetry properties, have the same scaling dimension for any value of $N$ (equivalently, any value of the loop fugacity). Also we argue that for any value of $N$ the $CP^{N-1}$ model has a marginal parity-odd operator which is related to the loops' winding angle.
description: 16 pages + appendices, 10 figures. v2: minor changes to improve clarity
DETERMINANTS OF BANK LENDING RATES: EMPIRICAL STUDY ON COMMERCIAL BANKS IN ETHIOPIA
Creators: name: Habtamu Amsalu
Publisher: name: Zenodo
Year: 2024

description: This study investigates and analyzes bank-specific variables and external determinant factors of lending rates of commercial banks" in Ethiopia. Seven factors (five bank specific and two macroeconomic factors) affecting banks lending rate were identified and analyzed. Internal factors selected under this study consists of several aspects such as operating expenses, deposit rate, non-interest income, liquidity and asset size, while external variables included are GDP and inflation. Thirteen commercial banks have been the subject for the study ranging from the period 2010 to 2017. A quantitative research approach and explanatory design were adopted in carrying out this research. The study had employed panel data estimation techniques to analyze the influence of bank specific and macroeconomic factors on lending rate. The random effect panel regression technique was applied to estimate the model using the econometric software package EViews 9. The results indicate that lending rates are significantly impacted by variables associated with higher cost structures or lower income. The results of balanced random effect panel data regression analysis showed that operating costs, deposit rate, liquidity, asset size and GDP have a positive and statistically significant relationship with lending rate. On the other hand, non-interest income has negative and statistically significant effect on lending rate, suggesting that variable that help improve bank"s income tend to benefit borrowers by lowering the interest they pay
Unified feature association networks through integration of transcriptomic and proteomic data
Creators: name: Wendler, Jason P.
name: Deatherage Kaiser, Brooke L.
name: Oxford, Kristie
name: McDermott, Jason E.
name: Waters, Katrina M.
name: McClure, Ryan S.
name: Swanstrom, Jesica
name: Adkins, Joshua N.
name: Baric, Ralph S.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2019

description: High-throughput multi-omics studies and corresponding network analyses of multi-omic data have rapidly expanded their impact over the last 10 years. As biological features of different types (e.g. transcripts, proteins, metabolites) interact within cellular systems, the greatest amount of knowledge can be gained from networks that incorporate multiple types of -omic data. However, biological and technical sources of variation diminish the ability to detect cross-type associations, yielding networks dominated by communities comprised of nodes of the same type. We describe here network building methods that can maximize edges between nodes of different data types leading to integrated networks, networks that have a large number of edges that link nodes of different–omic types (transcripts, proteins, lipids etc). We systematically rank several network inference methods and demonstrate that, in many cases, using a random forest method, GENIE3, produces the most integrated networks. This increase in integration does not come at the cost of accuracy as GENIE3 produces networks of approximately the same quality as the other network inference methods tested here. Using GENIE3, we also infer networks representing antibody-mediated Dengue virus cell invasion and receptor-mediated Dengue virus invasion. A number of functional pathways showed centrality differences between the two networks including genes responding to both GM-CSF and IL-4, which had a higher centrality value in an antibody-mediated vs. receptor-mediated Dengue network. Because a biological system involves the interplay of many different types of molecules, incorporating multiple data types into networks will improve their use as models of biological systems. The methods explored here are some of the first to specifically highlight and address the challenges associated with how such multi-omic networks can be assembled and how the greatest number of interactions can be inferred from different data types. The resulting networks can lead to the discovery of new host response patterns and interactions during viral infection, generate new hypotheses of pathogenic mechanisms and confirm mechanisms of disease.
Landauer limit of energy dissipation in a magnetostrictive particle
Creators: name: Roy, Kuntal
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: According to Landauer's principle, a minimum amount of energy proportional to temperature must be dissipated during the erasure of a classical bit of information compensating the entropy loss, thereby linking the information and thermodynamics. Here we show that the Landauer limit of energy dissipation is achievable in a shape-anisotropic single-domain magnetostrictive nanomagnet having two mutually anti-parallel degenerate magnetization states that store a bit of information. We model the magnetization dynamics using stochastic Landau-Lifshitz-Gilbert equation in the presence of thermal fluctuations and show that on average the Landauer bound is satisfied, i.e., it accords to the generalized Landauer's principle for small systems with stochastic fluctuations.
Solid waste management in Vietnam and estimation of CH4 emission from landfill by IPCC 2006, application for Go Cat landfill in Ho Chi Minh City
Creators: name: Le, Anh Hung
Publisher: name: Journal of Vietnamese Environment
Year: 2014

description: Over 27.8 million tons of solid waste produced per year from various sources in Vietnam, of which more than 46% from urban areas. In cities, the per-capita figure for garbage production has topped 0.7 kg per person per day; the largest amounts of garbage in Ho Chi Minh City and in Hanoi, 1.3 kg per day and 1.0 kg per day, respectively. Due to limited funding, most municipal waste is collected and dumped into landfills, not in compliance with hygiene standards. Currently, CH4 amount produced from landfills in Vietnam, in general, and in Ho Chi Minh City, in particular, has not been specifically identified. This report presents a method for determining the amount of CH4 released from closed landfills with the IPCC 2006 model. This model is capable of calculating and forecasting the amount of CH4 from landfills based on first-order decay (First Order Decay, FOD). The study applied the IPCC 2006 for preliminary estimate and forecast of CH4 produced at GoCat landfill in Ho Chi Minh City. Calculation results will support Go Cat’s landfill management in the future for the economic and environmental efficiency. Trên 27,8 triệu tấn chất thải rắn được phát sinh mỗi năm tại Việt Nam từ các nguồn khác nhau, trong đó 46% đến từ khu vực đô thị. Trung bình mỗi ngày mỗi người dân tại các đô thị phát thải 0,7 kg rác thải, lớn nhất tại Tp.Hồ Chí Minh với 1,3 kg/người/ngày và tại Tp. Hà Nội với 1,0 kg/người/ngày. Do hạn chế về kinh phí nên rác thải đô thị sau khi thu gom chủ yếu đem đi chôn lấp không hợp vệ sinh. Lượng khí CH4 sinh ra từ các bãi chôn lấp rác thải tại Việt Nam nói chung và tại Tp.Hồ Chí Minh nói riêng chưa được quan tâm. Nghiên cứu này sử dụng mô hình của IPCC năm 2006 để đánh giá lượng khí CH4 phát sinh từ bãi rác, ứng dụng cho khu chôn lấp rác thải Gò Cát của Tp.Hồ Chí Minh. Kết quả tính toán nhằm phục vụ cho công tác quản lý khu chôn lấp về hiệu quả kinh tế và bảo vệ môi trường.
description: Journal of Vietnamese Environment, Vol 6 No 1 (2014)
Kondo induced π-phase shift of microwave photons in a circuit quantum electrodynamics architecture
Creators: name: Deng, Guang-Wei
name: Henriet, Loic
name: Wei, Da
name: Li, Shu-Xiao
name: Li, Hai-Ou
name: Cao, Gang
name: Guo, Guang-Can
name: Schiro, Marco
name: Hur, Karyn Le
name: Guo, Guo-Ping
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Mesoscopic systems constitute appealing platforms to study many-body physics with light and matter degrees of freedom. The Kondo effect refers to the screening of a spin-1/2 impurity by a cloud of conduction electrons, then forming a many-body Fermi liquid ground state. The Kondo resonance produces a phase shift in the transmitted electronic wave packet which depends on the symmetry and nature of the many-body ground state. Theoretical calculations suggest that the Kondo resonance can interact with the irradiation photon field and should give rise to a π-phase shift of the photon signal in the case where the ground state is a Fermi liquid. This π-phase shift of microwave photon is driven from the Korringa-Shiba relation of quantum impurity Fermi-liquid ground states. We report the first observation of such a π-phase shift in a graphene double quantum dot within a circuit quantum electrodynamics architecture where the microwave photons couple to the pseudo-spin or charge degrees of freedom. The observed Kondo temperature TK ~ 550 mK is in agreement with DC conductance measurements. All our results support the formation of a Kondo resonance located above the Fermi level of the electronic reservoirs and the occurrence of an SU(4) Fermi-liquid ground state. We finally study how the Kondo-photon interactions can be tuned by inter-dot electron tunnel coupling strengths. Our experimental achievements may contribute to a better understanding of many-body physics in hybrid circuit systems, and open up new applications in atomic thin materials from the light-matter interaction.
Push button reproduction attempt of a research claim from Christopher Wlezien, (2017), in Comparative Political Studies
Creators: name: Tutor, Melba
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Social and Behavioral Sciences

description: Claim paragraph (from the sourcing sheet): The study tests the claim that the longer parties are in power, the further they push policy away from the average citizen, leading voters to punish the government on Election Day; that voters punish the government for pushing policy away from the average citizen is the portion of this claim selected. This reflects the following statement from the paper’s abstract: “That is, the policy liberalism of presidents from different parties diverges over time as their tenure in the White House increases, and the degree to which it does matters for the presidential vote.” The results of using the author’s measure of policy misrepresentation are shown in the second column of Table 2, where the outcome variable is presidential vote (the incumbent party’s share of the two-party vote). The focal predictor is the term for ‘policy misrepresentation (above/below predicted)’ (see the second column of Table 2 for details). The coefficient (−0.29; SE = 0.07; p < .01 (two-tailed)) for the variable implies that producing four laws more (less) than we would predict during a presidential term based on the public’s policy mood costs the president’s party about 1% on Election Day. The focal test in the original paper is: The coefficient (−0.29; SE = 0.07; p < .01 (two-tailed)) for the variable implies that producing four laws more (less) than we would predict during a presidential term based on the public’s policy mood costs the president’s party about 1% on Election Day.
Is macroscopic entanglement a typical trait of many-particle quantum states?
Creators: name: Tichy, Malte C.
name: Park, Chae-Yeun
name: Kang, Minsu
name: Jeong, Hyunseok
name: Mølmer, Klaus
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We elucidate the relationship between Schrödinger-cat-like macroscopicity and geometric entanglement, and argue that these quantities are not interchangeable. While both properties are lost due to decoherence, we show that macroscopicity is rare in uniform and in so-called random physical ensembles of pure quantum states, despite possibly large geometric entanglement. In contrast, permutation-symmetric pure states feature rather low geometric entanglement and strong and robust macroscopicity.
description: 13 pages, 9 figures
Increasing the translation of mouse models of MERS coronavirus pathogenesis through kinetic hematological analysis
Creators: name: Leist, Sarah R.
name: Jensen, Kara L.
name: Sheahan, Timothy P.
name: Baric, Ralph S.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2019

description: Newly emerging viral pathogens pose a constant and unpredictable threat to human and animal health. Coronaviruses (CoVs) have a penchant for sudden emergence, as evidenced by severe acute respiratory syndrome coronavirus (SARS-CoV), Middle East respiratory syndrome CoV (MERS-CoV) and most recently, swine acute diarrhea syndrome coronavirus (SADS-CoV). Small animal models of emerging viral pathogenesis are crucial to better understand the virus and host factors driving disease progression. However, rodent models are often criticized for their limited translatability to humans. The complete blood count is the most ordered clinical test in the United States serving as the cornerstone of clinical medicine and differential diagnosis. We recently generated a mouse model for MERS-CoV pathogenesis through the humanization of the orthologous entry receptor dipeptidyl peptidase 4 (DPP4). To increase the translatability of this model, we validated and established the use of an automated veterinary hematology analyzer (VetScan HM5) at biosafety level 3 for analysis of peripheral blood. MERS-CoV lung titer peaked 2 days post infection concurrent with lymphopenia and neutrophilia in peripheral blood, two phenomena also observed in MERS-CoV infection of humans. The fluctuations in leukocyte populations measured by Vetscan HM5 were corroborated by standard flow cytometry, thus confirming the utility of this approach. Comparing a sublethal and lethal dose of MERS-CoV in mice, analysis of daily blood draws demonstrates a dose dependent modulation of leukocytes. Major leukocyte populations were modulated before weight loss was observed. Importantly, neutrophil counts on 1dpi were predictive of disease severity with a lethal dose of MERS-CoV highlighting the predictive value of hematology in this model. Taken together, the inclusion of hematological measures in mouse models of emerging viral pathogenesis increases their translatability and should elevate the preclinical evaluation of MERS-CoV therapeutics and vaccines to better mirror the complexity of the human condition.
Biomass and waste as a renewable and sustainable energy source in Vietnam
Creators: name: Schirmer, Matthias
Publisher: name: Journal of Vietnamese Environment
Year: 2014

description: Due to Vietnam’s economic development its energy demand will continue to rise by 12–16% annually over the next few years. The government has realized that supply problems in the energy sector pose a significant threat to further development. Therefore, it is making concerted efforts to modernize the existing energy sector and expand the generating structure. There are ambitious expansion plans in the field of renewable energy sources, too. Owing to its very high potential, biomass could play a key role in energy production. This paper attempts to analyze the current status of biomass based energy production in Vietnam addressing variety of aspects such as biomass potential, legal framework as well as financial aspect. Section 4 contains an overview of ongoing bioenergy projects. Instead of providing a complete picture, these examples are intended to illustrate the various ways in which biomass can be used in different economic sectors. Finally existing barriers as well as action to incentivise bioenergy are discussed. Do phát triển kinh tế, nhu cầu năng lượng của Việt Nam sẽ tiếp tục tăng 12-16% mỗi năm trong vài năm tới. Chính phủ đã nhận ra rằng vấn đề cung cấp trong lĩnh vực năng lượng gây ra một mối đe dọa đáng kể cho sự phát triển tiếp theo. Vì vậy, có các nỗ lực để hiện đại hóa ngành năng lượng hiện có và mở rộng cấu trúc sản sinh năng lượng. Cũng có những kế hoạch mở rộng đầy tham vọng trong lĩnh vực nguồn năng lượng tái tạo. Do có tiềm năng rất cao, sinh khối có thể đóng một vai trò quan trọng trong sản xuất năng lượng. Bài viết này cố gắng phân tích tình trạng hiện tại của sản xuất năng lượng sinh khối tại Việt Nam giải quyết nhiều khía cạnh như tiềm năng sinh khối, khuôn khổ pháp lý cũng như các khía cạnh về tài chính. Tổng quan về các dự án năng lượng sinh học đang diễn ra được trình bày trong phần 4. Thay vì cung cấp một bức tranh hoàn chỉnh, các ví dụ được dùng để minh họa cho những cách khác nhau, trong đó sinh khối có thể được sử dụng trong các lĩnh vực kinh tế khác nhau. Rào cản cuối cùng hiện tại cũng như hành động để khuyến khích năng lượng sinh học sẽ được thảo luận.
description: Journal of Vietnamese Environment, Vol 6 No 1 (2014)
Joint resonant CMB power spectrum and bispectrum estimation
Creators: name: Meerburg, P. Daniel
name: Münchmeyer, Moritz
name: Wandelt, Benjamin
Publisher: name: arXiv
Year: 2015
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We develop the tools necessary to assess the statistical significance of resonant features in the CMB correlation functions, combining power spectrum and bispectrum measurements. This significance is typically addressed by running a large number of simulations to derive the probability density function (PDF) of the feature-amplitude in the Gaussian case. Although these simulations are tractable for the power spectrum, for the bispectrum they require significant computational resources. We show that, by assuming that the PDF is given by a multi-variate Gaussian where the covariance is determined by the Fisher matrix of the sine and cosine terms, we can efficiently produce spectra that are statistically close to those derived from full simulations. By drawing a large number of spectra from this PDF, both for the power spectrum and the bispectrum, we can quickly determine the statistical significance of candidate signatures in the CMB, considering both single frequency and multi-frequency estimators. We show that for resonance models, cosmology and foreground parameters have little influence on the estimated amplitude, which allows to simplify the analysis considerably. A more precise likelihood treatment can then be applied to candidate signatures only. We also discuss a modal expansion approach for the power spectrum, aimed at quickly scanning through large families of oscillating models.
description: 17 pages, 11 figures. This version: Added refs, fixed typos and some rewrites
Effect of different fertilizer types on Arsenic removal capacity of two fern species
Creators: name: Bui, Thi Kim Anh
Publisher: name: Journal of Vietnamese Environment
Year: 2014

description: More and more attention has been paid to the research on phytoremediation and hyperaccumulators. Arsenic (As) uptake by hyperaccumulator plant species depends on many different environmental factors. Fertilizer is one of the most important factors because the plant growth needs nutrients. In this study, the pot experiments were conducted in 12 weeks to understand the effect of different fertilizer on As removal capacity of Pityrogramma calomelanos and Pteris vittata. The results showed that, Arsenic concentration in the frond is higher than that in the root of the fern. As removal efficiency of the ferns from the soil amended with both inorganic and organic fertilizer is highest. The ferns removed As content in soil up to 7.4 and 12.6 mg As per kg DW soil, respectively. For the control experiments without adding fertilizers, As removal ability of the ferns from the soil is lowest that was only 2.1 mg As per kg DW soil. Trên thế giới đã và đang có nhiều nghiên cứu, ứng dụng phương pháp sử dụng thực vật để xử lý ô nhiễm, đặc biệt là các loài thực vật siêu tích tụ kim loại nặng. Sự tích lũy Asen (As) trong các loài thực vật siêu tích lũy phụ thuộc vào rất nhiều yếu tố môi trường và dinh dưỡng khác nhau. Phân bón là một trong những yếu tố quan trọng nhất vì sự phát triển cây rất cần chất dinh dưỡng. Trong nghiên cứu này, các thí nghiệm được tiến hành trong 12 tuần để đánh giá về ảnh hưởng của các loại phân bón khác nhau đến khả năng xử lý ô nhiễm As trong đất của dương xỉ. Kết quả thu được cho thấy, nồng độ As tích lũy trong phần thân của dương xỉ cao hơn rất nhiều so với phần rễ của cây. Hiệu quả loại bỏ As ra khỏi đất của dương xỉ trong các thí nghiệm bổ sung cả phân bón vô cơ và phân bón hữu cơ là cao nhất. Pityrogramma calomelanos và Pteris vittata có thể loại bỏ hàm lượng As trong 1 kg trọng lượng khô đất tương ứng lên đến 7,4 và 12,6 mg. Các công thức thí nghiệm đối chứng không bổ sung phân bón thì cho hiệu quả loại bỏ As ra khỏi đất là thấp nhất chỉ 2,1 mg As trên 1 kg trọng lượng khô đất.
description: Journal of Vietnamese Environment, Vol 6 No 1 (2014)
Peripheral Nerve Blocks for Acute Pain Management in Patients Undergoing Abdominal Surgery: An Umbrella Review Protocol
Creators: name: Barone, Natasha
name: Gaffar, Rana
name: Fiore, Julio
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Medicine and Health Sciences
subject: Medical Specialties
subject: Surgery
subject: abdominal surgery
subject: peripheral nerve block
subject: postoperative outcomes
subject: postoperative pain

description: This is a protocol for an umbrella review (systematic evaluation of systematic reviews and meta-analyses) aimed to address the following research question: In adult patients undergoing abdominal surgery, does the use of peripheral nerve blocks improve postoperative pain outcomes in comparison to a control intervention?
Tracking the polyclonal neutralizing antibody response to a dengue virus serotype 1 type-specific epitope across two populations in Asia and the Americas
Creators: name: Katzelnick, Leah C.
name: Harris, Eva
name: Young, Ellen
name: Balmaseda, Angel
name: Andrade, Daniela V.
name: Warnes, Colin
name: de Silva, Aravinda M.
name: Baric, Ralph S.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2019

description: The four dengue virus serotypes (DENV1-4) cause major public health problems worldwide. Highly neutralizing type-specific human monoclonal antibodies (hmAbs) target conformation-dependent epitopes on the DENV envelope protein, including 1F4, a DENV1 type-specific hmAb. Using a recombinant DENV2 virus displaying the DENV1 1F4 epitope (rDENV2/1), we measured the proportion and kinetics of DENV1 neutralizing antibodies targeting the 1F4 epitope in individuals living in Asia and the Americas where different DENV1 genotypes were circulating. Samples from 20 individuals were analyzed 3 and 18 months post-primary DENV1 infection, alongside samples from 4 individuals collected annually for four years post-primary DENV1 infection, from two studies in Nicaragua. We also analyzed convalescent post-primary DENV1 plasma samples from Sri Lankan individuals. We found that neutralizing antibodies recognizing the 1F4 epitope vary in prevalence across both populations and were detected from 20 days to four years post-infection. Additionally, both populations displayed substantial variability, with a range of high to low proportions of DENV1 type-specific neutralizing antibodies recognizing the 1F4 epitope seen across individuals. Thus, the 1F4 epitope is a major but not exclusive target of type-specific neutralizing antibodies post-primary infection with different DENV1 genotypes in Asia and Latin America, and additional epitopes likely contribute to type-specific neutralization of DENV1.
Multipartite rational functions
Creators: name: Klep, Igor
name: Vinnikov, Victor
name: Volčič, Jurij
Publisher: name: arXiv
Year: 2015
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics

description: Consider a tensor product of free algebras over a field $k$, the so-called multipartite free algebra $A=k \langle X^{(1)}\rangle\otimes\cdots\otimes k\langle X^{(G)}\rangle$. It is well-known that $A$ is a domain, but not a fir nor even a Sylvester domain. Inspired by recent advances in free analysis, formal rational expressions over $A$ together with their matrix representations in $M_{n_1}(k)\otimes\cdots\otimes M_{n_G}(k)$ are employed to construct a skew field of fractions $U$ of $A$, whose elements are called multipartite rational functions. It is shown that $U$ is the universal skew field of fractions of $A$ in the sense of Cohn. As a consequence a multipartite analog of Amitsur's theorem on rational identities relating evaluations in matrices over $k$ to evaluations in skew fields is obtained. The characterization of $U$ in terms of matrix evaluations fits naturally into the wider context of free noncommutative function theory, where multipartite rational functions are interpreted as higher order noncommutative rational functions with an associated difference-differential calculus and linear realization theory. Along the way an explicit construction of the universal skew field of fractions of $D\otimes k\langle X\rangle$ for an arbitrary skew field $D$ is given using matrix evaluations and formal rational expressions.
Phytoremediation of heavy metal polluted soil and water in Vietnam
Creators: name: Bui, Thi Kim Anh
name: Dang, Dinh Kim
name: Nguyen, Trung Kien
name: Nguyen, Ngoc Minh
name: Nguyen, Quang Trung
name: Nguyen, Hong Chuyen
Publisher: name: Journal of Vietnamese Environment
Year: 2014

description: Phytoremediation has been intensively studied during the past decade due to its cost-effectiveness and environmental harmonies. Most of the studies on treatment of heavy metal pollution in soil and water by plant species have been done in developed countries but are limited in Vietnam. In this study, we presented some research results of phytoremediation of polluted soils and water with heavy metals that were done by Institute of Environmental Technology for several last years. For treatment of heavy metal pollution in the water, some plants have great ability to accumulate heavy metals such as Vetiveria zizanioides, Phragmites australis, Eichhornia crassipes, Pistia stratiotes, Ipomoea aquatica, Nypa fruticans and Enhydra fluctuans. The heavy metal uptake into shoots and roots of 33 indigenous plant species in Thai Nguyen province was also determined. Two species of the plants investigated, Pteris vittata L. and Pityrogramma calomelanos L. were As hyperaccumulators, containing more than 0.1% As in their shoots while Eleusine indica, Cynodon dactylon, Cyperus rotundus and Equisetum ramosissimum accumulated very high Pb (0.15-0.65%) and Zn (0.22-1.56%) concentrations in their roots. Some experiments to clarify the potential of several plants as good candidates for phytoremediation of polluted soil by heavy metals were carried out in our institute. Phương pháp sử dụng thực vật để xử lý ô nhiễm đã được nghiên cứu nhiều trong thập kỷ qua do chi phí thấp và thân thiện với môi trường. Hầu hết các nghiên cứu về xử lý ô nhiễm kim loại nặng trong đất và nước bằng thực vật đã được thực hiện ở các nước phát triển nhưng ít có tại Việt Nam. Trong nghiên cứu này, chúng tôi giới thiệu một số kết quả dùng công nghệ thực vật để xử lý ô nhiễm kim loại nặng trong đất và nước tại Viện Công nghệ môi trường trong những năm gần đây. Đối với xử lý ô nhiễm kim loại nặng trong nước, một số thực vật có khả năng tích lũy tốt kim loại nặng như Vetiveria zizanioides, Phragmites australis, Eichhornia crassipes, Pistia stratiotes, Ipomoea aquatica, Nypa fruticans và Enhydra fluctuans. Sự hấp thụ và tích lũy kim loại nặng trong phần trên mặt đất và rễ của 33 loài thực vật bản địa tại Thái Nguyên cũng đã được xác định. Hai loài thực vật khảo sát là Pteris vittata và Pityrogramma calomelanos là những loài siêu tích lũy As, chứa hơn 0,1% As trong phần trên mặt đất của cây. Eleusine indica, Cynodon dactylon, Cyperus rotundus và Equisetum ramosissimum tích lũy Pb (0,15-0,65%) và Zn (0,22-1,56%) rất cao trong rễ. Một số thí nghiệm đánh giá tiềm năng của một số thực vật là đối tượng tốt cho xử lý ô nhiễm kim loại nặng trong đất đã được tiến hành trong phòng thí nghiệm của Viện Công nghệ môi trường.
description: Journal of Vietnamese Environment, Vol 6 No 1 (2014)
Push button reproduction attempt of a research claim from Jan Rovny, (2014), in World Politics
Creators: name: Tutor, Melba
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Social and Behavioral Sciences

description: Claim paragraph (from the sourcing sheet): In countries where the significant ethnic minority originates from the center of a communist federation, ethnic minorities identify with the left significantly more than the ethnic majority does. This reflects the following statement from the paper's abstract: "Recent empirical evidence, however, uncovers significant variance of party competition patterns across East European countries. To explain this variance, this article argues that an interaction between communist institutional framework and partisan responses to ethnic minorities determines party competition structure in the region." The claim is tested in Model 1 of Table 1 with an ordinary least squares regression with country dummies, where left-right placement is predicted as a function of minority status while controlling for gender, age, education, income, and country. The independent variable of interest is a dummy variable comparing ethnic minorities from the federal center and majorities in their countries. The table demonstrates that ethnic minorities originating from a federal center tend to be significantly more left-leaning than the ethnic majorities in their countries (coefficient on Minority from Federal Center term in model 1 = –1.179, cluster-corrected SE = 0.100, p < 0.01). The focal test in the original paper is: The table demonstrates that ethnic minorities originating from a federal center tend to be significantly more left-leaning than the ethnic majorities in their countries (coefficient on Minority from Federal Center term in model 1 = –1.179, cluster-corrected SE = 0.100, p < 0.01).
Creating nano composite TiO2.Fe2O3/laterite material applying to treat arsenic compound in groundwater
Creators: name: Nguyen, Hoang Nam
Publisher: name: Journal of Vietnamese Environment
Year: 2014

description: This article presents nano composite TiO2.Fe2O3/laterite materials, which were successfully prepared by hydrometallurgical method. The materials were modified using urea as the nitrogen source. The particles size of the materials is from 20-30 nanometers. The obtained materials can not only absorb arsenic compounds but also enhance the ability of converting As (III) or As (V) into Aso, which is removed from solution. Arsenic removal efficiency of these materials is high. Using sunlight in a hydraulic retention time, about 180 minutes, the arsenic value at the inflow was about 10 mg/L but the outflow was negligible. Covering TiO2.Fe2O3 nano on laterite have brought high economical efficiency, on one hand, it saved material and on the other hand, it can be continuously operated without the centrifugal separation of the nano material. Bài báo này giới thiệu về phương pháp điều chế vật liệu nano TiO2.Fe2O3 biến tính nitơ được phủ trên đá ong bằng phương pháp thủy luyện. Vật liệu nano thu được có kích thước 20-30 nm. Vật liệu thu được không những có khả năng hấp phụ các hợp chất của asen mà còn có khả năng khử As (III) hoặc As (V) thành Asokhi được chiếu sáng. Sử dụng ánh sáng mặt trời chiếu vào hệ thống xử lý trong thời gian 180 phút có thể loại bỏ được gần như hoàn toàn asen ra khỏi nước mặc dù hàm lượng đầu vào là 10 mg/l. Việc phủ vật liệu TiO2.Fe2O3 nano lên đá ong đã mang lại hiệu quả kinh tế cao, một mặt nó tiết kiệm được vật liệu, mặt khác, vật liệu có thể sử dụng một cách liên tục mà không cần phải tách bằng phương pháp ly tâm.
description: Journal of Vietnamese Environment, Vol 6 No 1 (2014)
Efficiency of combining limestone, sawdust and microorganisms to treat Zinc and Manganese in AMD in Mao Khe, Quang Ninh
Creators: name: Nguyen, Hoang Nam
name: Dang, Thi Ngoc Thuy
name: Bui, Thi Kim Anh
name: Nguyen, Hong Chuyen
Publisher: name: Journal of Vietnamese Environment
Year: 2014

description: This paper presents a novel technology combining limestone, sawdust and microorganisms to treat Zn and Mn in acid mine drainage (AMD) which brought a specially high efficiency. Hydraulic retention time is 1.1 day, aeration velocity is 0.6 L of air per 1 L of solution per min, cost only 0.2 USD/m3. In the system, the process of adsorption, biological hydrolization of cellulose supply carbon source for dissimilatory sulfate reduction and the precipitation process of metals with sulfide it was very convenient place. The concentration of heavy metals of AMD such as Mn, Zn... in the inflow are about 70 - 80 mg/L for Mn2+; 40 - 48 mg/L for Zn2+, outflow are only 0.4, 0.03 mg/L respectively. In conclusion, acid mine drainage wastewater treated by this technology can be reused for activities in the mines. Bài báo này giới thiệu công nghệ mới kết hợp phương pháp vật lý, hóa học, sinh học cho việc xử lý Zn và Mn có trong nước thải axit mỏ đạt hiệu quả đặc biệt cao. Hệ thống được xử dụng trong nghiên cứu gồm đá vôi, mùn cưa, vi sinh vật và được kết nối với hệ thống lọc bằng, sỏi, cát vàng và than hoạt tính. Hệ thống được vận hành liên tục theo 3 giai đoạn khác nhau với thời gian lưu 1,5 ngày (giai đoạn A), 1,1 ngày, tốc độ sục khí 0,3 L không khí trong 1 phút trong 1 L. dung dịch (giai đoạn B) và 1,1 ngày, tốc độ sục khí 0,6 L không khí trong 1 phút trong 1 L. dung dịch (giai đoạn C). Trong hệ thống, nồng độ trung bình của Zn2+ ở đầu vào khoảng 40,81 đến 44,52 mg/L, ở đầu ra nồng độ trung bình chỉ còn lại 5,41; 1,10 và 0,03 mg/L tương ứng. Nồng độ đầu vào của ion Mn2+ khoảng 69,44; 75,84 và 76,48 mg/L tương ứng, tuy nhiên, ở đầu ra nồng độ của ion đạt 5,66 mg/L, 1,35 và 0,41 mg/L. Sử dụng công nghệ này thời gian lưu ngắn, chi phí khoảng 4000 VNĐ/m3.
description: Journal of Vietnamese Environment, Vol 6 No 1 (2014)
YOUTH RISKY SEXUAL PRACTICES AND ASSOCIATED FACTORS AMONG HIGH SCHOOL STUDENTS IN BISHOFTU TOWN, OROMIA REGION, ETHIOPIA
Creators: name: Bedassa Fite
Publisher: name: Zenodo
Year: 2017

description: Background: Youth risky sexual practices are associated with serious and long-term, and in some cases, to life-threatening consequences. This is especially true when youth people engage in more than one risky sexual Practices. Although several studies were conducted in different parts of the world to understand the factors associated with risky sexual practices, little is known about the issue in Ethiopia in general and in Bishoftu town, in particular. Objectives: The objective of the present study was to assess the magnitude of risky sexual practices and associated factors among high school students in Bishoftu town, Oromia regional state, Ethiopia from December to February 2017 Methods: A cross-sectional school based study was conducted using quantitative data collection method. 461 people were included in the study. Data were collected using standard and structured self administered questionnaires. The collected data was entered into EPI info version 3.5 and analyzed using SPSS Version 21.
Human Norovirus Histo-Blood Group Antigen (HBGA) Binding Sites Mediate the Virus Specific Interactions with Lettuce Carbohydrates
Creators: name: Atmar, Robert L.
name: Saif, Linda
name: Baric, Ralph S.
name: Brewer-Jensen, Paul
name: Hou, Yixuan
name: Gao, Xiang
name: Boley, Patricia
name: Esseili, Malak A.
name: Wang, Quihong
name: Lindesmith, Lisa C.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2019

description: Lettuce is often implicated in human norovirus (HuNoV) foodborne outbreaks. We identified H-like histo-blood group antigens (HBGAs) on lettuce leaves as specific binding moieties for virus-like particles (VLPs) of HuNoV GII.4/HS194/2009 strain. The objective of this study was to determine whether HuNoV-lettuce binding is mediated through the virus HBGA binding sites (HBS). Toward this objective, VLPs of historical HuNoV GII.4 strains (1987, 1997, 2002, 2004 and 2006) with known natural mutations in their HBS, two newly generated VLP mutants of GII.4/HS194/2009 (D374A and G443A) and a VLP mutant (W375A) of GI.1/Norwalk/1968 along with its wild type VLPs, which displays distinct HBS, were investigated for their binding to lettuce. ELISA revealed that historical GII.4 strains binding to lettuce was dependent on their HBGAs profiles. The VLP mutants D374A and G443A lost binding to HBGAs and displayed no to minimal binding to lettuce, respectively. The VLPs of GI.1/Norwalk/1968 strain bound to lettuce through an H-like HBGA and the binding was inhibited by fucosidase digestion. Mutant W375A which was previously shown not to bind to HBGAs, displayed significantly reduced binding to lettuce. We conclude that the binding of HuNoV GII.4 and GI.1 strains to lettuce is mediated through the virus HBS.
Shifting the Quantum-Classical Boundary: Theory and Experiment for Statistically Classical Optical Fields
Creators: name: Qian, Xiao-Feng
name: Little, Bethany
name: Howell, John C.
name: Eberly, J. H.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The growing recognition that entanglement is not exclusively a quantum property, and does not even originate with Schrödinger's famous remark about it [Proc. Camb. Phil. Soc. 31, 555 (1935)], prompts examination of its role in marking the quantum-classical boundary. We have done this by subjecting correlations of classical optical fields to new Bell-analysis experiments, and report here values of the Bell parameter greater than ${\cal B} = 2.54$. This is many standard deviations outside the limit ${\cal B} = 2$ established by the Clauser-Horne-Shimony-Holt (CHSH) Bell inequality [Phys. Rev. Lett. 23, 880 (1969)], in agreement with our theoretical classical prediction, and not far from the Tsirelson limit ${\cal B} = 2.828...$. These results cast a new light on the standard quantum-classical boundary description, and suggest a reinterpretation of it.
description: Comments and Remarks are warmly welcome! arXiv admin note: text overlap with arXiv:1406.3338
The effects of biofilter on the removal of greenhouse gases at anaerobic digestion plants
Creators: name: Nguyen, Thanh Phong
name: Clemens, Joachim
name: Cuhls, Carsten
Publisher: name: Journal of Vietnamese Environment
Year: 2014

description: This study investigated the removal of gases such as methane (CH4), nitrous oxide (N2O) and ammonia (NH3) from biofilters in nine anaerobic digestion plants in Germany that treat biowaste. The treatment is in form of mechanical pre-treatment, anaerobic digestion followed by a composting with or without intensive aeration. The exhaust gases from the mechanical and anaerobic steps are treated by biofilters. In average, the biofilters removed 30% of total organic carbon (TOC), 50% of non-methane volatile organic carbon (NMVOC) and 51% NH3, whereas N2O concentrations increased by 26%. For CH4 the biofilters had only a small removal effect (6%). Nghiên cứu khảo sát sự loại bỏ những khí gây hiệu ứng nhà kính như CH4, N2O và NH3 từ những bể lọc khí sinh học ở chín nhà máy xử lý rác thải hữu cơ ở nước Đức bằng các biện pháp kỵ khí và hiếu khí. Rác hữu cơ được xử lý ở nhà máy thông qua các biện pháp như tiền xử lý bằng cơ học, kỵ khí và tiếp theo là hiếu khí với công nghệ thổi khí chủ động hoặc không thổi khí chủ động. Khí thải từ các quá trình cơ học và kỵ khí được xử lý bằng biện pháp lọc khí sinh học trước khi thải ra môi trường. Trung bình, những bể lọc khí sinh học loại bỏ 30% tổng lượng carbon hữu cơ, 50% những chất carbon hữu cơ bay hơi nhưng không phải khí methane và 51% khí ammoniac. Trong khi đó, nồng độ khí N2O tăng lên 26% sau khi qua bể lọc khí sinh học. Đối với khí methane, bể lọc khí sinh học có hiệu suất loại bỏ với loại khí này rất thấp chỉ 6%.
description: Journal of Vietnamese Environment, Vol 6 No 1 (2014)
Evaluation of patients’ experience and related qualitative outcomes in venous thromboembolism and anticoagulation: A scoping review.
Creators: name: Genge, Leanne
name: Skeith, Leslie
name: Le Gal, Gregoire
name: Tritschler, Tobias
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Medicine and Health Sciences

description: The objective of this scoping review is to characterize key outcomes of VTE disease as identified by patients within the current landscape of qualitative literature, with the goal of understanding the physical, psychological and emotional impact of VTE disease reflected from patients’ perspectives. This scoping review is part of a larger initiative to develop a core outcome set for all VTE research that matters to physicians, patients and other stakeholders.