bluuebunny/crossref_metadata_2025_split huggingface dataset:
Less Invasive Management of Endovascular Embolization and Neuroendoscopic Surgery for a Dural Arteriovenous Fistula Presenting with Acute Subdural Hematoma
Authors: Ishibashi Ryota , Maki Yoshinori , Ikeda Hiroyuki 
Published: August 2022

AbstractAcute subdural hematoma (ASDH), which causes midline shift of the brain, rarely arises from a dural arteriovenous fistula (DAVF). Herein, we report the first case of a DAVF manifesting ASDH, which was treated less invasively with endovascular embolization of a drainer of the DAVF and hematoma removal under neuroendoscopy. A 59-year-old man with a sudden onset of headache was transported to our hospital. Left ASDH and intracerebral hematoma in the left occipital lobe were detected. A cerebral angiogram revealed a DAVF fed by the petrosquamous branch of the left middle meningeal artery and jugular branch of the right ascending pharyngeal artery. The shunting point in the lateral tentorial DAVF drains through the internal occipital vein to the superior sagittal sinus. A varix was recognized in the draining vein (Borden type 3, Cognard type 4). The DAVF was embolized with Onyx (Medtronic, Minnesota, USA), and the left ASDH was removed with a small craniotomy under neuroendoscopy. No origin of the left ASDH was apparent in the surgical field. The patient was discharged from the hospital on postoperative day 18. The patient's status was modified Rankin scale 1 on discharge. Our management of combined endovascular treatment and neuroendoscopic hematoma removal may be useful and less invasive for hemorrhagic DAVF.
The Pulmonary Embolism Response Team: Rationale, Operation, and Outcomes
Authors: Glazier James J. , Patiño-Velasquez Skarlet , Oviedo Carlos 
Published: August 2022

AbstractThe pulmonary embolism response team (PERT) is an institutionally based multidisciplinary team that is able to rapidly assess and provide treatment for patients with acute pulmonary embolism (PE). Intrinsic to the team's structure is a formal mechanism to execute a full range of medical, endovascular, and surgical therapies. In addition, the PERT provides appropriate multidisciplinary follow-up of patients. In the 10 years since the PERT was first introduced, it has gained acceptance in many centers in the United States and around the world. These PERTs have joined together to form an international association, called the PERT Consortium. The mission of this consortium is to advance the diagnosis, treatment, and outcomes of patients with PE. There is considerable evidence that the PERT model improves delivery and standardization of care of PE patients, particularly those patients with massive and submassive PE. However, it is not yet clear whether PERTs improve clinical outcomes. A large prospective database is currently being compiled by the PERT Consortium. Analysis of this database will likely further delineate the role of PERTs in the management of intermediate-to-high risk PE patients and, importantly, help determine in which PE patients PERT may improve clinical outcomes.
Mass-Forming Chronic Pancreatitis: Diagnostic Performance of PET/CT
Authors: Reddy Ravikanth 
Published: August 2022

AbstractMass-forming chronic pancreatitis and pancreatic ductal adenocarcinoma are most commonly located in the head of pancreas, and there is a marked overlap in clinical features and imaging findings that makes it diagnostically challenging, although prognosis and management of both these entities differ. Differentiation is made even more difficult when surgical exploratory biopsy is obtained. Radical surgical resection remains the standard of care for pancreatic ductal adenocarcinoma and conservative treatment is effective for mass-forming chronic pancreatitis. Misdiagnosis of mass-forming chronic pancreatitis as pancreatic ductal adenocarcinoma results in unnecessary surgical intervention, and misdiagnosis of pancreatic ductal adenocarcinoma as mass-forming chronic pancreatitis results in delay in surgical intervention when required. Fluorodeoxyglucose-positron emission tomography/computed tomography can reliably be used for tissue characterization of mass-forming chronic pancreatitis and for monitoring disease response following treatment. Although differentiation of mass-like lesions of pancreas is reliably made on histopathology, significant false-negative rate is a major drawback that has a negative effect on diagnosis. This case report describes a rare presentation of mass-forming chronic pancreatitis with florid dystrophic calcifications in a 60-year-old male.
Spontaneous Obliteration of a Dissecting Aneurysm of Recurrent Artery of Heubner Monitored by Serial Magnetic Resonance Vessel Wall Imaging
Authors: Nakazaki Asuka , Ito Masaki , Isobe Masanori , Takahashi Takeshi , Nomura Taichi , Fujihara Fumiaki , Isu Toyohiko , Sugiyama Taku , Osanai Toshiya , Fujimura Miki 
Published: August 2022

AbstractAneurysms of the recurrent artery of Heubner (RAH) are known to be one of the uncommon cerebral aneurysms, predominantly presenting with bleeding symptoms. Previously, nine cases of the RAH aneurysms have been reported, all of which were treated surgically or endovascularly and most cases developed postoperative cerebral infarct in the ipsilateral caudate nucleus. Herein, we report a man presenting with transient ischemic attack due to diffuse cerebral vasospasm from a minor non-disabling subarachnoid hemorrhage (SAH) from an RAH aneurysm. He visited our hospital 7 days after the first experience of a thunderclap headache complaining with transient unilateral motor weakness and thin SAH in the right sylvian fissure. Diagnostic catheter angiography revealed a dissecting fusiform aneurysm (8 mm in size) originating from the left RAH contralateral to the thin SAH. Contrast-enhanced magnetic resonance vessel wall imaging (MR-VWI) helped to identify the ruptured nature of the RAH aneurysm. Owing to his delayed ischemic condition after minor SAH, he was conservatively treated with serial MR-VWI monitoring. The aneurysm was spontaneously obliterated with an asymptomatic lacunar infarct in the ipsilateral caudate nucleus in a month. Together, this case was considered as the dissecting aneurysm of RAH with a favorable outcome after the conservative management. Although long-term follow-up is mandatory because the disappearance of the vessel wall enhancement does not necessarily secure the permanent cure of the lesion, serial MR-VWI is helpful to diagnose the ruptured nature and monitor its chronological change in combination with conventional radiological imaging techniques.
Rare Case of Solitary Nasal Fibrous Tumor Eroding Skull-Base
Authors: Bhati Aditendraditya Singh , Rana Nishant , Raheja Girish , Tyagi Sudheer K. 
Published: August 2022

AbstractSolitary fibrous tumor (SFT) is a spindle cell lesion, classified under mesothelial tumors. Involvement of the nasal cavity, paranasal sinuses, and nasopharynx is rare. We present an extremely rare case of SFT of nasal origin eroding the anterior skull base. Complete local excision is the treatment of choice in the head and neck SFT, and we successfully excised the tumor by endoscopic approach only. The patient followed an uneventful course without any evidence of recurrence on 8-months follow-up.
Synthesis of Spirocyclic Diindeno[1,2-b:2′,1′-d]thiophenes
Authors: Langer Peter , Ammon Erich , Villinger Alexander , Ehlers Peter 
Published: August 2022

AbstractSpirocyclic diindenothiophenes were prepared by cyclization of tosylhydrazones, readily available from ketones, with 3,4-dibromo-2,5-bis(2-bromphenyl)thiophene. For bicyclic ketones, the bis-spirocycles were formed with very good diastereoselectivity.
Acute COVID-19 Pneumonia Unmasking a Large Left Atrial Myxoma
Authors: Hou Linle , Newman Joshua S. , You Joseph , Esposito Michael J. , Jauhar Rajiv , Vatsia Sheel K. , Azari Bani M. 
Published: August 2022

AbstractThis is a case of acute coronavirus disease 2019 pneumonia that revealed an incidental large atrial myxoma with obstructive physiology that ultimately required emergent treatment with a definitive atriotomy and resection of the underlying myxoma.
Real Exponential, Logarithmic, and Trigonometric Functions for Physicists
Authors: Pereyra Nicolas A. 
Published: August 2022

Real Exponential, Logarithmic, and Trigonometric Functions for Physicists builds on the author's previous books focused on mathematics for scientists. This new work presents a rigorous study of the underlying mathematical functions used in physics and provides its readers a deeper understanding for those studying and practicing the physical sciences.
This in-depth study:Delivers a thorough introduction to the math behind commonly used functions in physics and other disciplinesProvides readers with a strong foundation for developing analytic and problem-solving skillsApplies real life examples to bring theory to life for science students
Real Exponential, Logarithmic, and Trigonometric Functions for Physicists is a valuable guide for physics and math students, and is a concise text for instructors teaching in courses on number theory and other areas of the sciences where mathematics is needed.
Body part metaphors in phraseological expressions
Authors: Ganfi Vittorio , Piunno Valentina , Mereu Lunella 
Published: August 2022

AbstractThe paper addresses the employment of body part nouns in the creation of phraseological expressions of some European languages, a topic at the crossroads of language, cognition and culture. In particular, the contrastive analysis explores the common linguistic representation of meanings through body part metaphorical expressions in Italian, French, Spanish and English. While several efforts to gauge the existence of a “European linguistic type” (cf.Haspelmath, 2001) have been largely devoted to the study of grammatical structures, a systematic account of the lexical component of the major European languages has not been attempted yet. Among the lexical units, phraseological expressions (e.g. compounds, multiword units, idiomatic expressions, as well as light verb and light noun constructions) represent a relevant ground to inquire into, since they are the most transparent and authentic vehicle of common ideas and experiences gradually rooted in European communicative realities.
Rapid localization of radioactive leaks based on hybrid adaptive grey wolf algorithm
Authors: Zhao Jiankun , Liu Wei , Zhang Qingxian , Wu Hexi , Ge Liangquan , Li Tianbin , Gu Yi , Zeng Qi , Liu Yibao 
Published: August 2022

Abstract
Radioactive source localization algorithms have been widely
used in the detection of nuclear accident areas. But some
shortcomings, such as complex algorithm structure, slow localization
speed and poor accuracy, were obviously performed to affect mobile
robot locating autonomously. In this paper, a potential alternative
method was investigated to be a new usage of locating leaks, just
via specifying the change of exposure rate. In this model, several
key factors, such as gamma ray attenuation, scattering factor,
travel angle guide, spatial discretization, etc., were taken into
consideration, to demonstrate the effectiveness of the algorithm,
which is appropriated in unknown areas of the radioactive waste
repository. Since there are three factors with different
contribution, such as position, quantity of the source and gamma ray
energy, which considered to demonstrate its impact on success. So, a
hybrid adaptive grey wolf algorithm (HAGWO) has been adopted and
implemented to develop a novel rapid method of radioactive leak
location. Three aspects, including the good point set initialization
in population size, balanced convergence function, and self-adaptive
greedy strategy for population update, were optimized and merged
into the locating model. To investigate the effectiveness of the
algorithm, results of HAGWO are compared with grey wolf algorithm
(GWO), good point set initialization strategy GWO(GGWO) and adaptive
head wolf strategy GWO (ALGWO) in convergence speed, accuracy,
stability and positioning error of single and double leak points. It
is observed that convergence speed is increased by 37.93 ± 2%
at the highest; the convergence accuracy is increased by
92.42 ± 2% at the most; the stability is improved by
30% ∼ 50%. The positioning error of single leak point is within
1.08%, and the positioning error of double leak point is less than
8.90%. Besides, compared with GWO, GGWO and ALGWO, the single-point
accuracy is improved by 1.36 percentage points (to GWO), and the
double-point accuracy is improved by 40.35 percentage points (to
ALGWO) at most. It is observed that HAGWO performs the best in
locating leaks, with a faster convergence, stronger stability and
more accuracy.
Estimation of granite radiation hazards of Deh Siahan village in Rafsanjan city
Authors: Khezripour S. , Zarei N. , Rezaie M.R. 
Published: August 2022

Abstract
There are villages in Rafsanjan city (Kerman, Iran) that are
nearby or located on radioactive granite rock, unfortunately. In
this study, by measuring the 232Th, 238U and 40K
radioactive elements, the amount of radiation hazards caused by
radioactive granite rock. For the residents Deh Siahan village has
been investigated. The results show that the radiation hazard
parameters of Deh Siahan village are higher than the permissible
values announced by the UNSCEAR reports. For example, the
total effective dose rates of Deh Siahan village was determined to
be 0.30 ± 0.01 mSv/y. The calculated values of the excess
lifetime cancer risks (ELCR) for Deh Siahan village is
10.51 ± 0.03× 10-4. The average absorbed dose rate in
air for Deh Siahan village is 156.68 ± 4.01 nGy/h for the whole
studied samples, this value is about 285% of the maximum level
recommended by (ICRP60, 1991) to the public (1 mSv/y), so there is
high radiological risk for the peoples in those village.
Complex interaction between meteorological factors on the risk of hand, foot, and mouth disease
Authors: Du Zhicheng , Hopke Philip , Marks Tia , Lin Shao , Zhang Wangjian , Hao Yuantao 
Published: August 2022

Abstract
The relationship between meteorological factors and the risk of hand, foot, and mouth disease (HFMD) has been well documented. However, researchers have failed to consider the complex interactive relationships among meteorological factors. The weekly number of HFMD cases along with meteorological factors were collected between 2009 to 2017 in four cities in Guangdong Province. We used Bayesian kernel machine regression to investigate the nonlinear and interactive relationship between meteorological factors, such as temperature and humidity, on the risk of HFMD. Multivariate meta-analysis was used to pool the city-specific effect estimates and identify factors underlying the inter-city heterogeneity. The risk ratios (RRs) for each percentile increase in temperature from the 50th percentile value, while humidity was at its 10th, 50th, and 90th percentile values, were 1.621(95%CI: 1.226, 2.141), 2.638(2.169, 3.208), and 3.734(2.908, 4.792), respectively (Q= 19.132, P
interaction< 0.001). In contrast, the RRs for each percentile increase in humidity from its 50th percentile, while holding temperature at its 10th, 50th, and 90th percentile values, were 0.901(95%CI: 0.592, 1.369), 2.026(1.679, 2.448), and 0.884(0.632, 1.238), respectively (Q= 24.876, P
interaction < 0.001). Increased wind speed and sunshine duration were also observed to strengthen the impact of other meteorological factors. Furthermore, we found increased gross domestic product per capita and per capital area of parks and green land in city tended to significantly strengthen the interactive effects of humidity on other meteorological factors including sunshine duration (P = 0.013 and 0.042), rainfall (P = 0.017 and 0.035), temperature (P = 0.021 and 0.031), win speed (P = 0.011 and 0.045), and pressure (P = 0.013 and 0.042). Our study contributed further understanding of complex interactions between meteorological factors on the risk of HFMD. Our findings provide epidemiological evidence for meteorological interactions on HFMD, which may provide knowledge for future research on the health effects of meteorological factors.
Characterizing and quantifying uncertainty in projections of climate change impacts on air quality
Authors: East James D , Monier Erwan , Garcia-Menendez Fernando 
Published: August 2022

Abstract
Climate change can aggravate air pollution, with important public health and environmental consequences. While major sources of uncertainty in climate change projections—greenhouse gas (GHG) emissions scenario, model response, and internal variability—have been investigated extensively, their propagation to estimates of air quality impacts has not been systematically assessed. Here, we compare these uncertainties using a coupled modeling framework that includes a human activity model, an Earth system model of intermediate complexity, and a global atmospheric chemistry model. Uncertainties in projections of U.S. air quality under 21st century climate change are quantified based on a climate-chemistry ensemble that includes multiple initializations, representations of climate sensitivity, and climate policy scenarios, under constant air pollution emissions. We find that climate-related uncertainties are comparable at mid-century, making it difficult to distinguish the impact of variations in GHG emissions on ozone and particulate matter pollution. While GHG emissions scenario eventually becomes the dominant uncertainty based on the scenarios considered, all sources of uncertainty are significant through the end of the century. The results provide insights into intrinsically different uncertainties in projections of air pollution impacts and the potential for large ensembles to better capture them.
Performance analysis of electrode materials in electro discharge machining of monel K-500
Authors: Akgün Mahir 
Published: August 2022

Abstract
The present work focusses on the electrical discharge machining (EDM) of Monel K 500 super alloy with different electrodes. The study’s objective is to examine the effects of process parameters and electrode materials (Cu, W-Cu, and graphite) in terms of surface quality, material removal rateand electrode wear. In this context, EDM experiments have been designed and performed using the L27 standard orthogonal array of the Taguchi method with a statistical approach. The outcomes of this study reveal that the current plays an important role to improve the EDM machining performance of Monel K 500. The surface quality is approximately 11.62% and 55.52%, respectively better when Monel K-500 alloy is machined with copper electrodes compared to those in W-Cu and graphite electrodes. Moreover, The W-Cu electrode’s wear is approximately 15.73% and 21.05%, respectively less than those of graphite and Cu electrodes in optimum processing conditions. Graphite electrodes are better than Cu and W-Cu electrodes in terms of material removal rate. The statistical results also show that the estimation equations developed to select the optimum production conditions to give high accuracy results.
Effect of volcano-like textured tools on machining of Ti-6Al-4V alloy: a numerical and experimental analysis
Authors: Liu Gaohui , Fu Yonghong , Zhou Yun , Ji Jinghu , Gu Zehui 
Published: August 2022

Abstract
Higher temperature and lower thermal conductivity between the tool-chip contact face easily result in adhesion and wear on the tool surface which negatively affects the tool life and the machining quality of the workpiece in the machining Ti-6Al-4V alloy process. To address these problems, the investigation, combining the simulation and experiment, introduced the volcano-like textures of different diameters with excellent anti-adhesion performance on the tool rake face. Deform-3D software with updated Lagrangian formulation was used for numerical simulation, and the thermo-mechanical analysis was performed using the Johnson-Cook material model to predict the cutting forces, cutting temperature and tool wear. In machining experiments, volcano-like textures (VT) with different diameters were fabricated by fiber laser on the rake face of cemented carbide tools close to the main cutting edge. Experiments in machining Ti-6Al-4V alloy were carried out with the textured tools and non-textured tool under rough machining, semi-finishing and finishing conditions. Then, cutting force, cutting temperature and tool wear were investigated. The results showed that textured tools generally perform better than non-textured tool. The cutting force of VT1 was reduced by 31.2% and 50%, respectively, compared with the non-textured tool under semi-finishing and finishing conditions. With the refinement of machining, the cutting performance of the textured tools is improved, and the service life of the tool is extended. Therefore, the investigation can provide a basis for the surface texture design and optimization of the carbide tool.
Shape influence on the tribological properties of hexagonal boron nitride nanoplates and nanospheres reinforced epoxy coating
Authors: Wu Yinghao , Zhao Wenchao , Ci Xiaojing , Zhao Wenjie 
Published: August 2022

Abstract
Hexagonal boron nitride was known for its excellent lubricating capacity, however, the shape influence on the tribological properties of hexagonal boron nitride modified epoxy composite coatings was still a challenging requirement. Herein, the boron nitride nanoplates (BNNP) and nanospheres (BNNS) were modified by polydopamine to improve their dispersion in epoxy coatings and the shape influence of two nanoparticles on the tribological property was proved by the micro-morphologies of wear debris. When the mass content of polydopamine-modified BNNS was 0.25 wt%, the friction-reduction and anti-wear effects were the best, and the coefficient of friction and wear rate was reduced by 13.75% and 60.77%, respectively, compared with the pure epoxy coating. The ‘ball effect’ of BNNS provided rolling friction and the layer-structured debris exhibited good lubricating properties. The enhanced wear mechanism of BNNS provided wider potential application in the mechanical industry, automotive, aerospace, and infrastructure fields.
Explicit minimal representation of variance matrices, and its implication for dynamic volatility models
Authors: Abadir Karim M 
Published: August 2022

SummaryWe propose a minimal representation of variance matrices of dimension k, where parameterization and positive-definiteness conditions are both explicit. Then we apply it to the specification of dynamic multivariate volatility processes. Compared to the most parsimonious unrestricted formulation currently available, the required number of covariance parameters (hence processes) is reduced by about a half, which makes them estimable in full parametric generality if needed. Our conditions are easy to implement: there are only k of them, and they are explicit and univariate. To illustrate, we forecast minimum-variance portfolios and show that risk is always reduced (by a factor of 2 to 3 in spite of us using the simplest dynamics) compared to the standard benchmark used in finance, while also improving returns on the investment. Because of our representation, we do not get the usual dimensionality problems of existing unrestricted models, and the performance relative to the benchmark is actually improved substantially as k increases.