bluuebunny/crossref_metadata_2025_split huggingface dataset:
Weak similarity orbit of (log)‐self‐similar Markov semigroups on the Euclidean space
Authors: Patie Pierre , Sarkar Rohan 
Published: February 2023

AbstractWe start by identifying a class of pseudo‐differential operators, generated by the set of continuous negative definite functions, that are in the weak similarity (WS) orbit of the self‐adjoint log‐Bessel operator on the Euclidean space. These WS relations turn out to be useful to first characterize a core for each operator in this class, which enables us to show that they generate a class, denoted by , of non‐self‐adjoint ‐contraction positive semigroups. Up to a homeomorphism, includes, as fundamental objects in probability theory, the family of self‐similar Markov semigroups on . Relying on the WS orbit, we characterize the nature of the spectrum of each element in that is used in their spectral representation which depends on analytical properties of the Bernstein‐gamma functions defined from the associated negative definite functions, and, it is either the point, residual, approximate or continuous spectrum. We proceed by providing a spectral representation of each element in which is expressed in terms of Fourier multiplier operators and valid, at least, on a dense domain of a natural weighted ‐space. Surprisingly, the domain is the full Hilbert space when the spectrum is the residual one, something which seems to be noticed for the first time in the literature. We end up the paper by presenting a series of examples for which all spectral components are computed explicitly in terms of special functions or recently introduced power series.
Extreme isotopic heterogeneity in impact melt rocks: Implications for Martian meteorites
Authors: Jaret Steven J. , Rasbury E. Troy , Reiners Peter , Spray John G. , Thompson Lucy M. , Hemming Sidney R. , Thompson Michelle S. 
Published: February 2023

AbstractLead isotope ratios have been determined in multiple feldspar grains from hand samples of impact melt rock at the Manicouagan and Sudbury impact structures in Canada. The results reveal an extreme range of isotope values. This indicates that melt sheets are not homogeneous with respect to Pb at the millimeter scale. Such heterogeneity is significantly larger than that seen in non-impact-generated igneous rocks. Individual Pb isotope ratios of feldspars from Martian shergottites show a large range in 206Pb/204Pb values within one sample, more similar to the terrestrial impact melt sheets than to nonimpact igneous rocks. We suggest crystallization from impact melt sheets rather than volcanic sources as a petrogenetic model for some of the Martian shergottites.
Buoyant doming generates metamorphic core complexes in the North American Cordillera
Authors: Levy Drew A. , Zuza Andrew V. , Michels Zachary D. , DesOrmeau Joel W. 
Published: February 2023

AbstractMetamorphic core complexes (MCCs) are considered to be a hallmark of large-magnitude crustal extension, with their characteristic high-strain mylonitic fabrics attributed to simple-shear strain downdip of a detachment fault. However, some MCCs exhibit pure-shear–dominated mylonitic fabrics temporally decoupled from regional extension, which may be related to magmatically enhanced buoyant doming of the lower crust. We tested the viability of buoyant doming for the formation of MCCs in the North American Cordillera by investigating the kinematics and conditions of mylonitic shear in the Ruby Mountains–East Humboldt Range (REH) MCC. Field observations and geochronology demonstrate an ~10 m.y. gap between midcrustal attenuation and regional extension in the brittle upper crust. Mylonites in the REH record general shear strain with &gt;80% bulk attenuation at strain rates of 10–13 to 10–12 s–1 and temperatures of 400–600 °C. The REH mylonites developed at the culmination of 40–29 Ma magmatism involving mantle-derived mafic intrusions and leucogranite crustal melts prior to post–17 Ma detachment faulting. We posit diapirism driven by thermal and melt buoyancy could have generated shear zones along the diapir flanks at our documented strain rates. Characteristics of the buoyant doming model are expressed in many low- to moderate-melt-fraction MCCs globally, and the pre-extensional high-strain mylonitic fabrics may therefore be an important mechanism for localizing temporally decoupled brittle detachment faulting.
A Compact and Broadband Magic Tee with Waveguide Filter for Ka-Band System
Authors: Jang Youna , Choi Yuseong , Choi Jin-Woo , Ahn Dal 
Published: February 2023

In this letter, we propose and fabricate a waveguide Magic Tee with waveguide filter for Ka-band system. The proposed Magic Tee has a reduced

z

-axis arm, which must typically be long for impedance matching at the input port. A bridge iris is inserted at port 4 for signal application. The

z

-axis arm at port 4 is significantly shortened by the impedance matching tuning through the iris that is normally uses to connect the adaptor. Thus, the dimension of the proposed Magic Tee is reduced to

7.12
×
10
×
3.6

m

m

3

, and the insertion loss shows good performance of 0.9 dB by applying the impedance matching tuning. The proposed Magic Tee also contains a 7th waveguide filter, which is used to verify the signal division performance. The results of excitation at each port of the Magic Tee show insertion loss less than 4.5 dB and return loss of over 18 dB.
Effects of Iron and Vitamin C on Growth Performance, Iron Utilization, Antioxidant Capacity, Nonspecific Immunity, and Disease Resistance to Aeromonas hydrophila in Chinese Mitten Crab (Eriocheir sinensis)
Authors: Song Ying , Cai Xinyu , Bu Xianyong , Liu Shubin , Song Mingqi , Yang Yiwen , Wang Xiaodan , Shi Qingchao , Qin Jianguang , Chen Liqiao 
Published: February 2023

Iron is an essential trace element with an abroad physiological function, and iron deficiency can impair animal health. Vitamin C (VC) has the potential to release iron from diets and increase iron uptake. This study evaluates the effects of dietary iron and vitamin C on the growth performance, iron utilization, antioxidant capacity, and nonspecific immunity of the Chinese mitten crab (Eriocheir sinensis). Juvenile E. sinensis (

1.14
±
0.01

g

) were fed six diets supplemented with three levels of iron (41.40, 92.25, and 143.00 mg/kg), and each iron level supplemented either 4.33 mg/kg or 700.90 mg/kg of vitamin C for 8 weeks. Crabs fed 41.40 mg/kg of iron diet had the lowest weight gain (WG) and specific growth rate (SGR) and had the highest feed conversion rate (FCR) regardless of dietary vitamin C levels. Dietary 700.90 mg/kg of vitamin C improved WG and SGR but decreased FCR when the diets were supplemented with 41.40 and 143.00 mg/kg of iron (

P
<
0.05

). Dietary 700.90 mg/kg of vitamin C significantly improved the expression levels of divalent metal ion transporter 1, ferroportin, and iron regulation protein in the intestine and hepatopancreas when supplemented with 92.25 and 143.00 mg/kg of iron (

P
<
0.05

) and enhanced the transferrin content in hemolymph and iron deposition in the hepatopancreas when supplemented with 92.25 and 143.00 mg/kg of iron (

P
<
0.05

). Crabs fed the diet supplemented with 41.40 mg/kg of iron had the highest malondialdehyde content and the lowest superoxide dismutase activity in the hepatopancreas. Dietary 700.90 mg/kg of vitamin C supplementation also increased the acid phosphatase and bacteriolytic activity when diets were supplemented with 41.40 and 143.00 mg/kg of iron (

P
<
0.05

). In addition, crabs fed 143.00 mg/kg of iron and 700.90 mg/kg of vitamin C diet had the highest survival rate after the Aeromonas hydrophila challenge. This study demonstrates that dietary 700.90 mg/kg of vitamin C could promote iron absorption and utilization, thereby increasing the growth, immunity, and disease resistance of E. sinensis.
Política Externa Brasileira e Balança Comercial: breve análise dos governos Jânio Quadros/João Goulart e Castelo branco (1961 – 1967)
Authors: Gomes Talissa , Menon Gustavo 
Published: February 2023

O presente trabalho aborda uma breve análise da Política Externa Brasileira (PEB) e a relação com os resultados da balança comercial durante os períodos governamentais de Jânio Quadros (1961), João Goulart (1961-1964) e Castelo Branco (1964-1967), sob a ótica de relações comerciais entre Brasil e os Estados Unidos. Para isso, do ponto de vista metodológico, a pesquisa, de caráter exploratória-descritiva, percorreu o exame da condução da política externa brasileira durante o início dos anos 1960 - especialmente o alinhamento oficial do Itamaraty – e, por outro lado, coletou os dados do antigo Ministério do Desenvolvimento, Indústria e Comércio Exterior (MDIC), hoje absorvido pelo Ministério da Economia do Governo Federal brasileiro, para o exame dos indicadores e resultados da balança comercial brasileira, especialmente sua relação com os EUA. A pesquisa resulta na conclusão de que ações da política externa brasileira, mesmo divergente após o golpe militar de 1964, não impactaram de forma significativa nos resultados da balança comercial do período em questão, onde outros elementos e abordagens de longa duração devem ser consideradas para a interpretação das correntes de comércio e seu vínculo com a atuação da política externa dos Estados.
Nomogram to Predict Good Collateral Formation After the STA-MCA Bypass Surgery in Adult Patients With Moyamoya Disease
Authors: Sun Haogeng , Li Yue , Xiao Anqi , Li Wanjiang , Xia Chao , You Chao , Ma Lu , Liu Yi , Xia Chunchao 
Published: February 2023

Background:
Collateral formation from the extracranial carotid artery to ischemic brain tissue determines the clinical success of superficial temporal artery (STA) to middle cerebral artery (MCA) bypass surgery in adult patients with moyamoya disease, but postoperative collateral formation (PCF) after STA-MCA bypass surgery is unpredictable. Accurate preoperative prediction of acceptable PCF could improve patient selection. This study aims to develop a prediction nomogram model for PCF in this patient population.

Methods:
Adult patients with moyamoya disease undergoing the STA-MCA bypass surgery between January 2013 and December 2020 at a single institution were retrospectively or prospectively enrolled in this observational study. Data including potential clinical and radiological predictors were obtained from hospital records. A nomogram was generated based on a multivariate logistic regression analysis, to identify potential predictors associated with good PCF. The performance of the nomogram was evaluated for discrimination, calibration, and clinical utility.

Results:
Data from 243 patients with moyamoya disease who underwent the STA-MCA bypass surgery were analyzed to build the nomogram. After 1-year follow-up, 162 (66.7%) hemispheres had good PCF and 81 (33.3%) had poor PCF. Good PCF is associated with 3 preoperative factors: age at operation, a diameter of donor branch of STA, and the preinfarction period stage. Incorporating these 3 factors, the model achieved a concordance index of 0.88 (95% CI, 0.84–0.92) and had a well-fitted calibration curve and good clinical application value. A cutoff value of 100 was determined to predict good PCF via this nomogram.

Conclusions:
The nomogram exhibits high accuracy in predicting good PCF after the STA-MCA bypass surgery in adult patients with moyamoya disease and may allow surgeons to better evaluate preoperatively candidacy for successful bypass surgery.
Bidding on Price and Quality: An Experiment on the Complexity of Scoring Rule Auctions
Authors: Camboni Riccardo , Corazzini Luca , Galavotti Stefano , Valbonesi Paola 
Published: February 2023

Abstract
We experimentally study procurement auctions when both quality and price matter. We compare two treatments where sellers compete on one dimension only (price or quality), with three treatments where sellers submit a price-quality bid and the winner is determined by a scoring rule that combines the two offers. We find that, in the scoring rule treatments, efficiency and buyer's utility are lower than predicted. Estimates from a Quantal Response Equilibrium model suggest that increasing the dimension of the strategy space imposes a complexity burden on sellers, so that a simpler mechanism like a quality-only auction may be preferable.
A More Robust t-Test
Authors: Müller Ulrich K. 
Published: February 2023

Abstract
This paper combines extreme value theory for the smallest and largest k observations for some given k&gt;1 with a normal approximation for the average of the remaining observations to construct a more robust alternative to the usual t-test. The new test is found to control size much more successfully in small samples compared to existing methods. This holds for the canonical inference for the mean problem based on an i.i.d. sample, but also when comparing two population means and when conducting inference about linear regression coefficients with clustered standard errors.
Identity Verification Standards in Welfare Programs: Experimental Evidence from India
Authors: Muralidharan Karthik , Niehaus Paul , Sukhtankar Sandip 
Published: February 2023

Abstract
We study the impact of reforms that introduced more stringent, biometric ID requirements into India’s largest social protection program, using large-scale randomized and natural experiments. Corruption fell but with substantial costs to legitimate beneficiaries, 1.5–2 million of whom lost access to benefits at some point during the reforms. At the same time, adverse effects appear to have been driven primarily by decisions about the way the transition was managed, illustrating both the risks of rapid reforms, and how the impacts of promising new technologies can be highly sensitive to the protocols governing their use.
Focused Interventions and Test Score Fade-Out
Authors: Gilraine Michael , Penney Jeffrey 
Published: February 2023

Abstract
An administrative rule in North Carolina allowed students who failed an exam to retake it approximately two weeks later, triggering a brief yet intense test preparation period. We develop a structural model that accounts for selection and find that these students score much higher on the retest. Using a regression discontinuity design, we find substantial fade-out of the test score gains after one year but some persistence thereafter. Unlike other interventions that produce similar initial increases in performance, we do not observe benefits to long-term outcomes. Our findings highlight that persistence should be accounted for when comparing educational interventions.
Reestablishing Dicranopteris spissa (Gleicheniaceae, Polypodiopsida) from synonymy, an endemic species from Brazil. Phytotaxa 533 (1): 98–104. (Erratum)
Authors: LIMA LUCAS VIEIRA , SALINO ALEXANDRE 
Published: February 2023

This publication is a Corrigendum to Lima & Salino (2022). In the original article, we did not fully refer to the original publication of the basionym of the new proposed combination, which we rectify here. The authors apologize for the mistake and state that this does not change the scientific conclusions of the article in any way.
Safety assessment of the functional feed additive phenylcapsaicin in a commercial broiler diet
Authors: Paulsen Torbjørn Rage , Jensen Knut Helge , van Harn Jan , Veldkamp Teun 
Published: February 2023

Introduction: Intestinal colonisation of Salmonella is a major concern in the poultry industry, and a low dose of the high-purity synthetic capsaicin analogue phenylcapsaicin (PheCap) has the potential to be a phytobiotic alternative to antibiotics in reducing floor Salmonella in commercial broiler chicken houses. In this study we present the first safety assessment of PheCap at doses relevant for the poultry industry. Methods: In a completely randomized block design, Ross 308 male broilers were offered feed containing 0, 10, 15, or 150 mg PheCap/kg. Growth rates, mortality, haematology, clinical chemistry, foot pad lesions, litter quality and gross pathological examination of organs and tissues were evaluated for signs of toxicity over a two-phase, 35-day growth period. Results: No differences in feed intake and broiler growth were found, with broilers in the control group having the highest mortality. There was a statistically significant increase in the European Production Efficiency Factor (EPEF) for the 10 (p = 0.02) and 15 mg PheCap/kg feed (p = 0.003) treatment doses. No dose dependent adverse effects were found for any of the treatment doses. The No Observed Adverse Effect Level (NOAEL) of PheCap is probably higher than that of the highest weekly averaged daily intake of 36.3 mg/kg BW/day observed in the present study. Conclusions: The inclusion of PheCap in broiler feed at doses relevant for the commercial poultry industry is assumed not have any negative effects on broiler health.
Electrical properties and chemiresistive response to 2,4,6 trinitrotoluene vapours of large area arrays of Ge nanowires
Authors: Frigeri Paola , Gombia Enos , Bosi Matteo , Trevisi Giovanna , Seravalli Luca , Ferrari Claudio 
Published: February 2023

AbstractWe study the electrical and morphological properties of random arrays of Ge nanowires (NW) deposited on sapphire substrates. NW-based devices were fabricated with the aim of developing chemiresistive-type sensors for the detection of explosive vapours. We present the results obtained on pristine and annealed NWs and, focusing on the different phenomenology observed, we discuss the critical role played by NW–NW junctions on the electrical conduction and sensing performances. A mechanism is proposed to explain the high efficiency of the annealed arrays of NWs in detecting 2,4,6 trinitrotoluene vapours. This study shows the promising potential of Ge NW-based sensors in the field of civil security.
Hi-C analysis of genomic contacts revealed karyotype abnormalities in chicken HD3 cell line
Authors: Maslova A. , Plotnikov V. , Nuriddinov M. , Gridina M. , Fishman V. , Krasikova A. 
Published: February 2023

AbstractBackgroundKaryotype abnormalities are frequent in immortalized continuous cell lines either transformed or derived from primary tumors. Chromosomal rearrangements can cause dramatic changes in gene expression and affect cellular phenotype and behavior during in vitro culture. Structural variations of chromosomes in many continuous mammalian cell lines are well documented, but chromosome aberrations in cell lines from other vertebrate models often remain understudied. The chicken LSCC-HD3 cell line (HD3), generated from erythroid precursors, was used as an avian model for erythroid differentiation and lineage-specific gene expression. However, karyotype abnormalities in the HD3 cell line were not assessed. In the present study, we applied high-throughput chromosome conformation capture to analyze 3D genome organization and to detect chromosome rearrangements in the HD3 cell line.ResultsWe obtained Hi-C maps of genomic interactions for the HD3 cell line and compared A/B compartments and topologically associating domains between HD3 and several other cell types. By analysis of contact patterns in the Hi-C maps of HD3 cells, we identified more than 25 interchromosomal translocations of regions ≥ 200 kb on both micro- and macrochromosomes. We classified most of the observed translocations as unbalanced, leading to the formation of heteromorphic chromosomes. In many cases of microchromosome rearrangements, an entire microchromosome together with other macro- and microchromosomes participated in the emergence of a derivative chromosome, resembling “chromosomal fusions'' between acrocentric microchromosomes. Intrachromosomal inversions, deletions and duplications were also detected in HD3 cells. Several of the identified simple and complex chromosomal rearrangements, such as between GGA2 and GGA1qter; GGA5, GGA4p and GGA7p; GGA4q, GGA6 and GGA19; and duplication of the sex chromosome GGAW, were confirmed by FISH.ConclusionsIn the erythroid progenitor HD3 cell line, in contrast to mature and immature erythrocytes, the genome is organized into distinct topologically associating domains. The HD3 cell line has a severely rearranged karyotype with most of the chromosomes engaged in translocations and can be used in studies of genome structure–function relationships. Hi-C proved to be a reliable tool for simultaneous assessment of the spatial genome organization and chromosomal aberrations in karyotypes of birds with a large number of microchromosomes.
Investigation of B-atp6-orfH79 distributing in Chinese populations of Oryza rufipogon and analysis of its chimeric structure
Authors: Zhang Xuemei , Chen Shuying , Zhao Zixian , Ma Cunqiang , Liu Yating 
Published: February 2023

Abstract
Background
The cytoplasmic male sterility (CMS) of rice is caused by chimeric mitochondrial DNA (mtDNA) that is maternally inherited in the majority of multicellular organisms. Wild rice (Oryza rufipogon Griff.) has been regarded as the ancestral progenitor of Asian cultivated rice (Oryza sativa L.). To investigate the distribution of original CMS source, and explore the origin of gametophytic CMS gene, a total of 427 individuals with seventeen representative populations of O. rufipogon were collected in from Dongxiang of Jiangxi Province to Sanya of Hainan Province, China, for the PCR amplification of atp6, orfH79 and B-atp6-orfH79, respectively.

Results
The B-atp6-orfH79 and its variants (B-atp6-GSV) were detected in five among seventeen populations (i.e. HK, GZ, PS, TL and YJ) through PCR amplification, which could be divided into three haplotypes, i.e., BH1, BH2, and BH3. The BH2 haplotype was identical to B-atp6-orfH79, while the BH1 and BH3 were the novel haplotypes of B-atp6-GSV. Combined with the high-homology sequences in GenBank, a total of eighteen haplotypes have been revealed, only with ten haplotypes in orfH79 and its variants (GSV) that belong to three species (i.e. O. rufipogon, Oryza nivara and Oryza sativa). Enough haplotypes clearly demonstrated the uniform structural characteristics of the B-atp6-orfH79 as follows: except for the conserved sequence (671 bp) composed of B-atp6 (619 bp) and the downstream followed the B-atp6 (52 bp, DS), and GSV sequence, a rich variable sequence (VS, 176 bp) lies between the DS and GSV with five insertion or deletion and more than 30 single nucleotide polymorphism. Maximum likelihood analysis showed that eighteen haplotypes formed three clades with high support rate. The hierarchical analysis of molecular variance (AMOVA) indicated the occurrence of variation among all populations (FST = 1; P < 0.001), which implied that the chimeric structure occurred independently. Three haplotypes (i.e., H1, H2 and H3) were detected by the primer of orfH79, which were identical to the GVS in B-atp6-GVS structure, respectively. All seventeen haplotypes of the orfH79, belonged to six species based on our results and the existing references. Seven existed single nucleotide polymorphism in GSV section can be translated into eleven various amino acid sequences.

Conclusions
Generally, this study, indicating that orfH79 was always accompanied by the B-atp6, not only provide two original CMS sources for rice breeding, but also confirm the uniform structure of B-atp-orfH79, which contribute to revealing the origin of rice gametophytic CMS genes, and the reason about frequent recombination of mitochondrial DNA.