bluuebunny/crossref_metadata_2025_split huggingface dataset:
Modulator Induced Formation of a Neutral Framework Based on Trinuclear Cobalt(II) Clusters and Nitrilotribenzoic Acid: Synthesis, Magnetism, and Sorption Properties
Authors: Akintola Oluseun , Buchholz Axel , Görls Helmar , Plass Winfried 
Published: April 2021

AbstractThe solvothermal reaction of cobalt(II) chloride and 4,4′,4′′‐nitrilotribenzoic acid (H3ntb) in dmf employing a modulator based approach leads to the formation of the neutral framework with the formula [Co9(ntb)6(solv)12]n (JUMP‐3). Different mono‐ and dicarboxylic acids such as benzoic, phthalic, isophthalic, and acetic acid could be used as appropriate modulator to trigger the reaction toward the formation of the neutral framework. X‐ray crystallography revealed a three‐dimensional network composed of linear trinuclear cobalt(II) units as metal nodes and the triarylamine linkers. The topological analysis showed that the framework adopts a 3,6‐coordinated net with 3,6T80 topology. Magnetic measurements performed in the temperature range of 2–300 K indicate antiferromagnetic interactions between the cobalt(II) ions within its linear trinuclear clusters. The N2 sorption properties were investigated and show the presence of micropores, which is consistent with the presence of the 1D channels in the crystal structure of JUMP‐3.
A novel approach on femtocell placement in the commercial buildings using genetic algorithm
Authors: Nassiri Mohammad Javad , Etemadi Borujeni Shahram 
Published: April 2021

AbstractThe femtocell networks have been developed to solve the indoor coverage issues. In the large commercial buildings, finding the minimum number of femtocells and their locations with a full coverage of the building is a complicated problem. This article attempts to minimize the number of femtocells in a large building while providing maximum coverage. In this article, the locations of the femtocells are determined such that the total number of handovers in the building is minimal. For this purpose, the building area is divided into small and equal‐sized subregions, and a femtocell matrix coverage is obtained for each subregion using the path‐loss equation. We utilize the femtocell matrix coverage and propose a mathematical model to minimize the number of femtocells with a maximum (almost complete) coverage of the building area. We employ the genetic algorithm to solve this NP‐hard problem. An efficient algorithm is also presented to create the initial population for the genetic algorithm. Based on the past behavior of the users, we select the locations for the femtocells to reduce the number of handovers. Numerical results indicate that with almost complete coverage, our proposed method reduces the femtocell counts up to 55% and reduces the number of handovers up to 30% compared with the previous work.
Promoting evaluation in youth character development through enhanced Evaluation Capacity Building: Empirical findings from the PACE Project
Authors: Chauveron Lisa M. , Urban Jennifer Brown , Samtani Satabdi , Cox Milira , Moorman Leslie , Hargraves Monica , Buckley Jane , Linver Miriam R. 
Published: April 2021

AbstractIn this paper, we present empirical findings from a mixed‐methods study of an Evaluation Capacity Building (ECB) initiative called the Partnerships for Advancing Character program Evaluation (PACE) Project that applied the Relational Systems Evaluation (RSE) approach. We focused especially on how participation in this partnership‐based ECB program is associated with changes in attitudes and behaviors related to evaluation capacity and Evaluative Thinking. We used a repeated measures design with semi‐structured interviews and surveys to examine two research questions: (1) Do Program Professionals participating in PACE adopt Evaluative Thinking behaviors? And (2) Do Program Professionals participating in PACE demonstrate increased evaluation capacity, including improved attitudes about evaluation? We found that PACE successfully increased Program Professional's behaviors, attitudes, and capacity; in particular, participants overwhelmingly noted that the emphasis on Evaluative Thinking changed the way they think about and approach evaluation, such that evaluation is now more well‐integrated into their practice.
Exercise and Adipose Tissue Immunity: Outrunning Inflammation
Authors: Winn Nathan C. , Cottam Matthew A. , Wasserman David H. , Hasty Alyssa H. 
Published: April 2021

Chronic inflammation is considered a precipitating factor and possibly an underlying cause of many noncommunicable diseases, including cardiovascular disease, metabolic diseases, and some cancers. Obesity, which manifests in more than 650 million people worldwide, is the most common chronic inflammatory condition, with visceral adiposity thought to be the major inflammatory hub that links obesity and chronic disease. Adipose tissue (AT) inflammation is triggered or heightened in large part by (1) accelerated immune cell recruitment, (2) reshaping of the AT stromal‐immuno landscape (e.g., immune cells, endothelial cells, fibroblasts, adipocyte progenitors), and (3) perturbed AT immune cell function. Exercise, along with diet management, is a cornerstone in promoting weight loss and preventing weight regain. This review focuses on evidence that increased physical activity reduces AT inflammation caused by hypercaloric diets or genetic obesity. The precise cell types and mechanisms responsible for the therapeutic effects of exercise on AT inflammation remain poorly understood. This review summarizes what is known about obesity‐induced AT inflammation and immunomodulation and highlights mechanisms by which aerobic exercise combats inflammation by remodeling the AT immune landscape. Furthermore, key areas are highlighted that require future exploration and novel discoveries into the burgeoning field of how the biology of exercise affects AT immunity.
Thermal‐aging characteristics of epoxy/glass fiber composite materials fordry‐typeair‐core reactors
Authors: Bian Bo , Xia Guowei , Li Jingwei , Shao Shuai , Duan Qijun , Xie Qing 
Published: April 2021

AbstractIn recent years, dry‐type air‐core reactors have frequently experienced inter‐turn short circuits due to the aging of the inter‐turn insulation. In this paper, we prepared epoxy/glass fiber samples and carried out an accelerated thermal aging test up to 840 hours. In different stages of aging, we tested the surface insulation properties, dielectric properties, thermal and mechanical properties of the samples. The results show that: Flashover voltage drops significantly, and when aging for 35 days, it has dropped by 12.4%. This is because aging is accompanied by the conversion of shallow traps to deep traps and the reduction of conductive channels, which slows down the charge dissipation rate and decreases the flashover voltage. Dielectric, thermal, and mechanical properties also show a deteriorating trend. Through the analysis of the changes in thermal and mechanical properties, it is inferred that thermal aging will damage the epoxy matrix more than the glass fiber. In addition, combined with the scanning electron microscope, Fourier transform infrared spectrometer, and X‐ray photoelectron spectrometer characterization results, we believed that the main reason for the material deterioration is the detachment of the glass fiber and the break of the long chain of the matrix. This article has certain reference value for the subsequent engineering application and online monitoring of this material.
Validation of an electronic algorithm for Hodgkin and non‐Hodgkin lymphoma in ICD‐10‐CM
Authors: Epstein Mara M. , Dutcher Sarah K. , Maro Judith C. , Saphirak Cassandra , DeLuccia Sandra , Ramanathan Muthalagu , Dhawale Tejaswini , Harchandani Sonali , Delude Christopher , Hou Laura , Gertz Autumn , DiNunzio Nina , McMahill‐Walraven Cheryl N. , Selvan Mano S. , Vigeant Justin , Cole David V. , Leishear Kira , Gurwitz Jerry H. , Andrade Susan , Cocoros Noelle M. 
Published: April 2021

AbstractPurposeLymphoma is a health outcome of interest for drug safety studies. Studies using administrative claims data require the accurate identification of lymphoma cases. We developed and validated an International Classification of Diseases, Tenth Revision, Clinical Modification (ICD‐10‐CM)‐based algorithm to identify lymphoma in healthcare claims data.MethodsWe developed a three‐component algorithm to identify patients aged ≥15 years who were newly diagnosed with Hodgkin (HL) or non‐Hodgkin (NHL) lymphoma from January 2016 through July 2018 among members of four Data Partners within the FDA's Sentinel System. The algorithm identified potential cases as patients with ≥2 ICD‐10‐CM lymphoma diagnosis codes on different dates within 183 days; ≥1 procedure code for a diagnostic procedure (e.g., biopsy, flow cytometry) and ≥1 procedure code for a relevant imaging study within 90 days of the first lymphoma diagnosis code. Cases identified by the algorithm were adjudicated via chart review and a positive predictive value (PPV) was calculated.ResultsWe identified 8723 potential lymphoma cases via the algorithm and randomly sampled 213 for validation. We retrieved 138 charts (65%) and adjudicated 134 (63%). The overall PPV was 77% (95% confidence interval: 69%–84%). Most cases also had subtype information available, with 88% of cases identified as NHL and 11% as HL.ConclusionsSeventy‐seven percent of lymphoma cases identified by an algorithm based on ICD‐10‐CM diagnosis and procedure codes and applied to claims data were true cases. This novel algorithm represents an efficient, cost‐effective way to target an important health outcome of interest for large‐scale drug safety and public health surveillance studies.
Potential mechanisms of the fatigue‐reducing effect of cognitive‐behavioral therapy in cancer survivors: Three randomized controlled trials
Authors: Müller Fabiola , Wijayanto Feri , Abrahams Harriët , Gielissen Marieke , Prinsen Hetty , Braamse Annemarie , van Laarhoven Hanneke W.M. , Groot Perry , Heskes Tom , Knoop Hans 
Published: April 2021

AbstractObjectiveFatigue is a common symptom among cancer survivors that can be successfully treated with cognitive‐behavioral therapy (CBT). Insights into the working mechanisms of CBT are currently limited. The aim of this study was to investigate whether improvements in targeted cognitive‐behavioral variables and reduced depressive symptoms mediate the fatigue‐reducing effect of CBT.MethodsWe pooled data from three randomized controlled trials that tested the efficacy of CBT to reduce severe fatigue. In all three trials, fatigue severity (checklist individual strength) decreased significantly following CBT. Assessments were conducted pre‐treatment and 6 months later. Classical mediation analysis testing a pre‐specified model was conducted and its results compared to those of causal discovery, an explorative data‐driven approach testing all possible causal associations and retaining the most likely model.ResultsData from 250 cancer survivors (n = 129 CBT, n = 121 waitlist) were analyzed. Classical mediation analysis suggests that increased self‐efficacy and decreased fatigue catastrophizing, focusing on symptoms, perceived problems with activity and depressive symptoms mediate the reduction of fatigue brought by CBT. Conversely, causal discovery and post‐hoc analyses indicate that fatigue acts as mediator, not outcome, of changes in cognitions, sleep disturbance and depressive symptoms.ConclusionsCognitions, sleep disturbance and depressive symptoms improve during CBT. When assessed pre‐ and post‐treatment, fatigue acts as a mediator, not outcome, of these improvements. It seems likely that the working mechanism of CBT is not a one‐way causal effect but a dynamic reciprocal process. Trials integrating intermittent assessments are needed to shed light on these mechanisms and inform optimization of CBT.
Bilateral vocal fold palsy due to ingested battery in the postcricoid area/proximal esophagus
Authors: Goussard Pierre , Morrison Julie , Nel Etienne , Mfingwana Lunga , Andronikou Savvas , Blokland Rachel A. , Mukhtar Abdiwahab , Loock James W. , de Bruyn G. H. M. 
Published: April 2021

AbstractStridor is a common symptom associated with foreign body aspiration. In most cases, this is due to the foreign bodies lodging in the supraglottis, glottis, subglottis, or high extra‐thoracic trachea. Infrequently, foreign bodies located in the esophagus cause stridor. The ingestion of button batteries (BBs) has been reported to cause multiple problems. The incidence has been estimated at 10.5 per million people per year with a case fatality rate of 0.5%. BBs predominantly cause esophageal mucosal injury. Mechanisms of injury include pressure necrosis, electrolysis, caustic exposure, or heavy metal toxicity. The reported complications include severe esophageal ulceration, trachea‐esophageal fistula or aorto‐esophageal fistula, and pneumonia. Vocal fold pathology after battery ingestion, other than edema of cords, has been rarely reported. We describe a case of acute bilateral vocal fold dysfunction and review the literature.
Insight into the semiconducting performance of tetraphenyldipyranylidene derivatives in organic field‐effect transistors
Authors: Naserian Samira , Izadyar Mohammad , Arkan Foroogh 
Published: April 2021

AbstractIn this paper, tetraphenyldipyranylidene (DPPh) was considered as the primary organic molecule in organic field‐effect transistors (OFETs). Electron‐withdrawing atoms (F, Cl, and Br) were attached to the H‐atoms of four peripheral phenyl groups of para‐positions relative to the O‐atoms of DPPh. The influences of different electron‐withdrawing atoms on the electronic and optical properties, charge transport parameters, and charge carrier mobility were investigated at the M06‐2X/6‐311++G(d,p) level. The absorption and emission spectra were theoretically simulated and an intense peak in the visible region was obtained. Moreover, the charge injection energy barriers were calculated by considering Pt as the source electrode and a greater hole transport than electron transport was confirmed. Also, the obtained ratio of the hole/electron mobility shows that the insertion of the electron‐withdrawing atoms in DPPh is a promising strategy to have an ambipolar or n‐type semiconductor. Finally, DPPh‐Br shows a greater performance in the OFETs.
Predicting the lifetime of pull requests in open‐source projects
Authors: de Lima Júnior Manoel Limeira , Soares Daricélio , Plastino Alexandre , Murta Leonardo 
Published: April 2021

AbstractA recent survey using industrial projects has shown that providing an estimate of the lifetime of pull requests to developers helps to speed up their conclusion. Previous work has explored pull request lifetime prediction in open‐source projects using regression techniques but with a broad margin of error. The first objective of our work was to reduce the average error rate of the prediction obtained by the regression techniques so far. We performed experiments with different regression techniques and achieved a significant decrease in the mean error rate. The second objective of our work was to obtain a more effective and useful predictive model that can classify pull requests according to five discrete time intervals. We proposed new predictive attributes for the estimation of the time intervals and employed attribute selection strategies to identify subsets of attributes that could improve the predictive behavior of the classifiers. Our classification approach achieved the best accuracy in all the 20 projects evaluated in comparison with the literature. The average accuracy was of 45.28% to predict pull request lifetime, with an average normalized improvement of 14.68% in relation to the majority class and 6.49% in relation to the state‐of‐the‐art.
Interstitial nephritis of unknown aetiology in captive slender‐horned gazelles (Gazella leptoceros)
Authors: Vercammen Francis , Rutjens Sofie , Chiers Koen 
Published: April 2021

AbstractFour captive slender‐horned gazelles (Gazella leptoceros) died in a short period. The clinical signs were lethargy progressing rapidly to stupor and death. Differential diagnoses included trauma, intoxication, hepatic and renal failure. Blood analyses revealed increased blood urea nitrogen, creatinine, aspartate aminotransferase, alanine aminotransferase and creatine kinase. Serum mean copper levels had risen almost two‐fold. No trauma was found and salient post‐mortem examination results were friable livers and granular and/or pitted renal capsular surfaces with indentations. The most consistent histological change was chronic interstitial lymphoplasmacytic nephritis, tubular degeneration and glomerulosclerosis. Potential causes were investigated and ruled out. Erysipelothrix rhusiopathiae was cultured from the liver and the kidney of three animals, but could not be confirmed histopathologically. Polymerase chain reaction (PCR) carried out on kidney and liver and serological screening were negative for leptospirosis. Copper involvement could not be confirmed by toxicological analysis of liver and kidney tissue or by histopathology. The aetiology remains unknown.
Two‐dimensional thin layer convective flow with heat transfer from magneto‐hydrodynamic uniform free convection flow driven by nonlinear stretching surface
Authors: Ferdows Mohammad , Alzahrani Faris 
Published: April 2021

AbstractA uniform two‐dimensional magneto‐hydrodynamic convection flow of an adhesive incompressible fluid along a vertical stretching surface in accordance with varying thermal conductivity and radiation is analyzed. The uppermost layer temperature, the transverse magnetic field and the stretching velocity are presumed to alter as a power function of the distance from the origin. The non‐linear PDE (partial differential equations) which run our examined problem are converted into a set of non‐linear ordinary differential equations by the use of a relevant transformations followed by a numerical solution implementing a shooting method together with Runge‐Kutta integration formula. We examine the effects of a variety of regulating parameters, viz the magnetic parameter, the velocity and temperature exponents, the variable thermal conductivity parameter, buoyancy parameter and the radiation parameter. The graphs and tables express a powerful impact of these parameters on the behavior of the flow and heat transfer.
A technical analog of the cosmological constant problem and a solution thereof
Authors: Kourkoulou Ioanna , Nicolis Alberto , Sun Guanhao 
Published: April 2021

Abstract
The near vanishing of the cosmological constant is one of the most puzzling open problems in theoretical physics. We consider a system, the so-called framid, that features a technically similar problem. Its stress-energy tensor has a Lorentz-invariant expectation value on the ground state, yet there are no standard, symmetry-based selection rules enforcing this, since the ground state spontaneously breaks boosts. We verify the Lorentz invariance of the expectation value in question with explicit one-loop computations. These, however, yield the expected result only thanks to highly nontrivial cancellations, which are quite mysterious from the low-energy effective theory viewpoint.
A generalized Momentum/Complexity correspondence
Authors: Barbón J. L. F. , Martín-García J. , Sasieta M. 
Published: April 2021

Abstract
Holographic complexity, in the guise of the Complexity = Volume prescription, comes equipped with a natural correspondence between its rate of growth and the average infall momentum of matter in the bulk. This Momentum/Complexity correspondence can be related to an integrated version of the momentum constraint of general relativity. In this paper we propose a generalization, using the full Codazzi equations as a starting point, which successfully accounts for purely gravitational contributions to infall momentum. The proposed formula is explicitly checked in an exact pp-wave solution of the vacuum Einstein equations.
Exothermic dark mesons in light of electron recoil excess at XENON1T
Authors: Choi Soo-Min , Lee Hyun Min , Zhu Bin 
Published: April 2021

Abstract
We consider a novel mechanism to realize exothermic dark matter with dark mesons in the limit of approximate flavor symmetry in a dark QCD. We introduce a local dark U(1)′ symmetry to communicate between dark mesons and the Standard Model via Z′ portal by partially gauging the dark flavor symmetry with flavor-dependent charges for cancelling chiral anomalies in the dark sector. After the dark local U(1)′ is broken spontaneously by the VEV of a dark Higgs, there appear small mass splittings between dark quarks, consequently, leading to small split masses for dark mesons, required to explain the electron recoil excess in XENON1T by the inelastic scattering between dark mesons and electron. We propose a concrete benchmark model for split dark mesons based on SU(3)L× SU(3)R/SU(3)V flavor symmetry and SU(Nc) color group and show that there exists a parameter space making a better fit to the XENON1T data with two correlated peaks from exothermic processes and satisfying the correct relic density, current experimental and theoretical constraints.
MRI after Whoops procedure: diagnostic value for residual sarcoma and predictive value for an incomplete second resection
Authors: Alramdan Mohammed H. A. , Kasalak Ömer , Been Lukas B. , Suurmeijer Albert J. H. , Yakar Derya , Kwee Thomas C. 
Published: April 2021

AbstractObjectiveTo determine the value of MRI for the detection and assessment of the anatomic extent of residual sarcoma after a Whoops procedure (unplanned sarcoma resection) and its utility for the prediction of an incomplete second resection.Materials and methodsThis study included consecutive patients who underwent a Whoops procedure, successively followed by gadolinium chelate-enhanced MRI and second surgery at a tertiary care sarcoma center.ResultsTwenty-six patients were included, of whom 19 with residual tumor at the second surgery and 8 with an incomplete second resection (R1:n = 6 and R2:n = 2). Interobserver agreement for residual tumor at MRI after a Whoops procedure was perfect (κvalue: 1.000). MRI achieved a sensitivity of 47.4% (9/19), a specificity of 100% (7/7), a positive predictive value of 100% (9/9), and a negative predictive value of 70.0% (7/17) for the detection of residual tumor. MRI correctly classified 2 of 19 residual sarcomas as deep-seated (i.e., extending beyond the superficial muscle fascia) but failed to correctly classify 3 of 19 residual sarcomas as deep-seated. There were no significant associations between MRI findings (presence of residual tumor, maximum tumor diameter, anatomic tumor extent, tumor margins, tumor spiculae, and tumor tail on the superficial fascia) with an incomplete (R1 or R2) second resection.ConclusionGadolinium chelate-enhanced MRI is a reproducible method to rule in residual sarcoma, but it is insufficiently accurate to rule out and assess the anatomic extent or residual sarcoma after a Whoops procedure. Furthermore, MRI has no utility in predicting an incomplete second resection.