bluuebunny/crossref_metadata_2025_split huggingface dataset:
Long-term outcomes after transcatheter aortic valve replacement in nonagenarians: a multicenter age-based analysis
Authors: Costa Giuliano , Valvo Roberto , Fiorina Claudia , Adamo Marianna , Giannini Cristina , Testa Luca , Bruschi Giuseppe , Poli Arnaldo , De Felice Francesco , Montorfano Matteo , Maffeo Diego , Iadanza Alessandro , Reimers Bernhard , Bedogni Francesco , Petronio Anna S. , Tamburino Corrado , Barbanti Marco 
Published: November 2020

Aim
To assess the outcome of nonagenarians patients receiving transcatheter aortic valve replacement (TAVR).

Methods
We aimed to stratify the overall population from an Italian, multicenter, observational project including a total of 3792 consecutive patients who underwent TAVR with CoreValve and Evolut R/PRO devices between April 2009 and October 2018, into four groups according to their age class (≥90 vs. 80–89 years vs. 70–79 vs. <70 years) and to compare outcomes up to 4 years after TAVR.

Results
At 4 years, survival estimates showed no difference in terms of overall survival [Kaplan–Meier estimates (KM est.) 49.9 vs. 58.1% vs. 57.0 vs. 69.3%; P
logrank = 0.28] among the four groups. After 2 years from the procedure, landmark analysis showed an age-based difference in overall survival (KM est. 63.8 vs. 75.0% vs. 75.1 vs. 88.7%; P
logrank = 0.025) but no difference in terms of survival from cardiovascular death (KM est. 87.8 vs. 87.4% vs. 86.1 vs. 96.1%; P
logrank = 0.43). Finally, age itself was not correlated with overall mortality at 4 years (hazard ratio 1.06, 95% confidence interval 0.86–1.30, P = 0.591).

Conclusion
TAVR with self-expanding CoreValve and Evolut prostheses was demonstrated to have good long-term outcomes, regardless of the patient's age. At 4 years, no difference in overall mortality was reported among age-based groups, while a higher overall mortality was reported in nonagenarians after 2 years from the procedure. TAVR showed good long-term outcomes even in nonagenarian patients, and it could be the therapy of choice for selected elderly patients.
On 4-dimensional flows with wildly embedded invariant manifolds of a periodic orbit
Authors: Pochinka Olga V. , Shubin Danila D. 
Published: November 2020

Abstract
In the present paper we construct an example of 4-dimensional flows on 𝕊3 × 𝕊1 whose saddle periodic orbit has a wildly embedded 2-dimensional unstable manifold. We prove that such a property has every suspension under a non-trivial Pixton's diffeomorphism. Moreover we give a complete topological classification of these suspensions.
Besicovitch cascades and bounded partial quotients
Authors: Kochergin Andrey 
Published: November 2020

Abstract
The article continues a series of works studying cylindrical transformations having discrete orbits (Besicovitch cascades). For any γ ∈ (0,1) and any ɛ > 0 we construct a Besicovitch cascade over some rotation with bounded partial quotients, and with a γ–Hölder function, such that the Hausdorff dimension of the set of points in the circle having discrete orbits is greater than 1 − γ− ɛ.
Dynamics of conformal foliations
Authors: Zhukova Nina I. 
Published: November 2020

Abstract
The purpose of this article is to review the author's results on the existence and structure of minimal sets and attractors of conformal foliations. Results on strong transversal equivalence of conformal foliations are also presented. Connections with works of other authors are indicated. Examples of conformal foliations with exceptional, exotic and regular minimal sets which are attractors are constructed.
Any closed 3-manifold supports A-flows with 2-dimensional expanding attractors
Authors: Medvedev V. , Zhuzhoma E. 
Published: November 2020

Abstract
We prove that given any closed 3-manifold M
3, there is an A-flow f

t
on M
3 such that the non-wandering set NW (f

t
) consists of 2-dimensional non-orientable expanding attractor and trivial basic sets.
Evaluation of Physical and Mechanical Properties of Cotton Warps Under a Cyclic Load of Stretch-Abrasion
Authors: Guo Min , Liu Jianli , Zhu Bo , Gao Weidong 
Published: November 2020

AbstractThe fatigue behavior of cotton warps was studied by a newly weaving load simulator (WLS) developed in our laboratory. Reborn hairiness, strength retention, and elongation retention of sized warps were adopted to evaluate the physical and mechanical properties of sized warps under stretch-abrasion cyclic loading. The influences of different fatigue cycles on the above three indicators were also discussed. The results indicated that the fatigue behavior of the cotton warps accompanied by abrasion yields a three-parameter Weibull distribution. All the fitting plots show acceptable linearity. Moreover, there is a strong relationship of quadratic polynomial between the tensile properties and the fatigue cycle of the sized warps according to the scatter fitting (R2> 91.08%). Similarly, there is also a good relationship of quadratic polynomial between the reborn hairiness index and the fatigue cycle of the sized warps (R2> 94.51%). Finally, regardless of the strength retention, elongation retention, and reborn hairiness, the physical and mechanical properties of the cotton warps still change with the continuous increase of the fatigue cycle after 40% of the fatigue cycle, but it is not significant. The research was helpful to estimate the capacity of the warps to sustain failure.
Effects of Flocks Doping on the Dynamic Mechanical Properties of Shear Thickening Gel
Authors: Tan Yuhao , Li Yuling , Ma Yanxue , Rao Bingjun 
Published: November 2020

Abstract
Polymethyl methacrylate (PMMA) was used as the dispersed phase and mold silicone was used as the continuous phase to prepare the shear thickening gel (STG) doped with a certain amount of flocks by rotary stirring. STG doped with flocks by a rotary rheometer was tested and observed through a scanning electron microscope. Results revealed that both the rotary stirring sample preparation and the rheological test method of the rotary rheometer could lead to the regular arrangement of flocks and could not reflect shear thickening performance accurately. The flocks showed a random arrangement in STG after the mixing process, and the dynamic mechanical properties were able to be measured with a dynamic mechanical analyzer (DMA). Flocks with a fineness of 3 Denier, 1 mm in length, and a mass ratio of 5% had significant effects on the dynamic mechanical properties of STG. Due to long continuous shearing time, flocks were arranged regularly when the sweeping frequency was higher than 125 Hz, then the shear thickening performance of the doped STG was declined.
Estimation of Seams in Paraglider Wing
Authors: Maślanka Paulina , Korycki Ryszard , Szafrańska Halina 
Published: November 2020

Abstract
The aim of the article is to analyze the seams connecting the covering textiles in paraglider wing and estimate their physical strength. The most extreme flight parameters (the angle of attack and velocity) in the numerical model of the wing allow the determination of the mean pressure inside the contour and the maximal difference between the pressures on the inner and the outer material surfaces. The preprocessing stage and numerical calculations in Ansys environment consider three different covering materials. The tool Porous Media is used to create the objects of a given value of air permeability. The estimated parameter of seam is the maximal pressure difference between both sides of the covering material, which that interacts with the test results. The quality index of the seam is defined by the maximal force to seam rupture and relative elongation during rupture. The obtained results indicate that the seams are resistant to the pressure difference caused by the most extreme flight parameters.
Numerical Investigation of Heat Transfer in Garment Air Gap
Authors: Zhang Yijie , Jia Juhong 
Published: November 2020

Abstract
This article aimed to study the characteristics and mechanisms of 3D heat transfer through clothing involving the air gap. A three-dimensional finite volume method is used to obtain the coupled conductive, convective, and radiative heat transfer in a body-air-cloth microclimate system. The flow contours and characteristics of temperature, heat flux, and velocity have been obtained. The reason for the high flux and temperature regions was analyzed. Computational results show that the coupled effect of the air gap and the airflow between the skin and garment strongly influences the temperature and heat flux distribution. There are several high-temperature regions on the clothing and high heat flux regions on the body skin because the conductive heat flux can cross through the narrow air gap and reach the cloth surface easily. The high-speed cooling airflow brings about high forced convective heat flux, which will result in the temperature increase on the upper cloth surface. The radiative heat flux has a strong correlation with the temperature gradient between the body and clothing. But its proportion in the total heat flux is relatively small.
Environmental Carrying Capacity Analysis Based on Water Resources (Case Study of East Surabaya Area)
Authors: Hastoyuando Enggar , Brontowiyono Widodo , Hasanah Nur Aini Iswati 
Published: November 2020

Abstract
East Surabaya, an area that is developing intensively, is known for its excessive problems, including a water shortage which reoccurs every year. The main objective of this study is to investigate the environmental carrying capacity based on the available water resources in East Surabaya, Indonesia. The method used consists of determining the ratio between supply and demand in order to obtain the carrying capacity of the local environment. The results show that the carrying capacity in East Surabaya in the year 2030 is of conditional sustain and amounts to 1.0. Generally, the deficit status (overshoot) occurs between May and November and conditional sustain in April and December, with the condition of surplus (sustain) occurring from January to March. However, further action is needed to conserve water during the surplus months and thus meet the needs arising during the deficit months.
Climate Adaptability of Old and New House in Bushehr's Historical Texture
Authors: Mozafari Nadiya , Alimardani Masoud 
Published: November 2020

Abstract
The port of Bushehr, with its valuable and unique historical texture, completely matches with its unbearable climate conditions. Over hundreds of years, the port has provided an appropriate ground for human life as no air conditioner is needed there. Unfortunately, this valuable old texture has been destroyed inadvertently. New buildings in the port are just superficial copies of the old buildings’ external surfaces, with no attention to their goal, i.e., the provision of thermal comfort for inhabitants. The new buildings are dramatically increasing without considering the historical texture and climate. As a result, the inhabitants have to use air conditioners in most months continuously; hence, there would be an increase in energy consumption and a disruption in climate balance. This study has been conducted to compare the compatibility of such architecture with the climate and its success in providing climate comfort for the inhabitants. According to the information obtained from the study, the old houses built more than 100 years ago using traditional design had better performance in adaptability with climate. Accordingly, the exploitation of traditional instructions and patterns in a new format would largely reduce energy consumption in hot seasons and eliminate the need for heating in cold seasons. In this regard, a huge amount of energy is saved, resulting in less damage to the environment.
Expropriation and Airport Development
Authors: Kazda Antonín , Novák Sedláčková Alena , Bračić Matija 
Published: November 2020

Abstract
The article deals with issues, which may arise during the preparation of line infrastructure projects in the public interest such as airports, railways or highways. We focused mainly on the issue of expropriation of land in the public interest and related problems in Slovakia and Croatia but also in other states. Few case studies complement the theoretical part of the study. The paper is focused on comparison of selected national legislation especially Slovak and Croatian in this field and individual State’s approaches and tries to find the necessary changes in legislation whose could be usefully for the future. Slovakia and Croatia were chosen for comparison because not only they have a similar population and number of public airports, but they also have a common history and had common legal framework where, after the Austro-Hungarian settlement in 1867, Croatia itself belonged to Zalitavsko within Austria-Hungary together with Slovakia.
Implementing Different Tubular Framings on High-Rise Structures and Optimizing their Cost and Drift Control with an Optimum Column Spacing
Authors: Malik Saadat , Ul Haq Syed Ikram , Zaidi Safdar Abbas , Maher Ataullah 
Published: November 2020

Abstract
This paper presents the results of variation in column spacing of a tube in its outer periphery concerning structural drift and cost optimization. For high rise structures, tubular framing and outrigger braced frames are considered as the most appropriate solution economically. In recent past not must study has been focused on the tubular frame in its columns spacing and span length. In this research, a simple square plan structure has been considered with different heights of 30, 40, and 50 story buildings. Six different framing systems of the tubular structure have been developed with different column spacing in each and employed to each high-rise structure. Concrete strength and steel yield strength has been taken as a fixed value for every model. Several models were developed with these combinations and the drift and structural safety have been optimized by reducing the cross-section sizes in each system. Seismic analysis has been carried out to evaluate the effects of varying column spacing in each tube. The comparison of all the employed systems was carried out and cost analysis has been made. Observations have been taken from drift, base shear, and cost analysis of each framing system of the tube, and certain results were concluded for structures with different height.
A Comparative Thermal Analysis of Walls Composed of Traditional and Alternative Building Materials
Authors: Petkova-Slipets Rositsa , Yordanov Krastin , Zlateva Penka 
Published: November 2020

Abstract
This research aims at comparing the thermal performance of walls made from traditional and alternative building materials. The experimental study involves five types of walls were studied based on perforated ceramic bricks and a mixture of clay, sand with various straw proportions. Specialized software and the finite element method (FEA) were employed for modelling of the thermal processes and their visualization for the different types of walls. A simulation modelling algorithm was developed. The models developed show very good convergence of the results and provide for subsequent design and thermal calculation of constructions made by environmentally friendly materials.
Microstructural And Mechanical Properties Of Selective Laser Melted Inconel 718 For Different Specimen Sizes
Authors: Madejski Bartosz , Malicki Maciej , Czarnewicz Sławomir , Gruber Konrad 
Published: November 2020

Abstract
Selective laser melting (SLM) falls into the category of additive manufacturing technologies that are being increasingly used in the aerospace industry. This study presents the results of the examination of the microstructure and mechanical properties of selective laser melted Inconel 718. The tests were carried out for samples of different geometry (thickness, shape). The investigation showed the effect of the specimen’s size and the printing direction on the microstructure and mechanical properties. In the microstructural investigation, light and scanning electron microscopes were used. The microstructure investigation included measurements of the grain size and the carbides’ content. In order to estimate porosity computer tomography was used. Tensile tests were carried out at room temperature. The results showed differences in mechanical and microstructural properties of different size specimens.
Perception of formal and informal institutions by entrepreneurs in China, Morocco, and Germany – A cross-cultural pilot study
Authors: Busch Rainer , Gassemi Karim , Papastamatelou Julie , Unger Alexander , May Christian 
Published: November 2020

Abstract

Introduction and Aims
Entrepreneurship and the business environment, in general, are being influenced by the existence of formal and informal institutions. This study focuses on the negative versus positive perceptions of Moroccan, Chinese, and German entrepreneurs to formal and informal institutions, and the associations of these perceptions with self-efficacy and market versus network orientation of the business environment.

Methods
In a sample of n = 319 female and male entrepreneurs, we have examined similarities and differences in the perception of informal and formal institutions and their effects on self-efficacy and business strategy, while conducting t-tests and linear regressions.

Results
In all three cultural contexts, both formal and informal institutions play a significant role because of different reasons.

Conclusion
The nature of entrepreneurship is complex as both formal and informal institutional factors are differently associated with businesses. The results could enhance the understanding regarding the coexistence of formal or informal institutions within the business environments of different countries and the connections between business orientation and self-efficacy.
Feasibility and Safety of Peripheral Intravenous Administration of Vasopressor Agents in Resource-limited Settings
Authors: Padmanaban Ajay , Venkataraman Ramesh , Rajagopal Senthilkumar , Devaprasad Dedeepiya , Ramakrishnan Nagarajan 
Published: November 2020

Abstract

Background
Vasopressors are conventionally administered through a central venous catheter (CVC) and not through a peripheral venous catheter (PVC) since the latter is believed to be associated with increased risk of extravasation. Placement of a CVC requires suitably trained personnel to be on hand, and in resource-limited settings, this requirement may delay placement. Because of this and in cases where suitably trained personnel are not immediately available, some clinicians may be prompted to utilise a PVC for infusing vasopressors. The objective of this study is to assess the feasibility and safety of vasopressors administered through a PVC.

Materials and methods
Patients who received vasopressors through a PVC for more than one hour were included in a single centre, consecutive patient observational study. Patients with a CVC at the time of initiation of vasopressors were excluded. Data regarding the size, location of PVCs, dose, duration and number of vasopressors infused were recorded. The decision to place CVC was left to the discretion of the treating physician. Extravasation incidents, severity and management of such events were recorded.

Results
One hundred twenty-two patients age 55(4) years [mean (SD)] were included in the study. The commonest PVC was of 18G calibre (57%), and the most common site of placement was the external jugular vein (36.5%). Noradrenaline was the most common vasopressor used at a dose of 10.6 (7) mcg/min [mean (SD)] and the median duration of nine hours (IQR: 6-14). CVC was placed most commonly due to an increasing dose of vasopressors after 4.5(4) hours [mean (SD)]. Grade 2 Extravasation injury occurred in one patient after prolonged infusion of fifty-two hours, through a small calibre (20G) PVC, which was managed conservatively without any sequelae.

Conclusion
Vasopressors infused through a PVC of 18G or larger calibre into the external jugular, or a forearm vein is feasible and safe. Clinicians need to balance the safety of peripheral vasopressor infusion with the additional costs and complications associated with CVC in resource-limited settings.
Rhabdomyolysis-Induced Acute Renal Injury in a Schizophrenic Patient
Authors: Tiglis Mirela , Hurmuzache Tudor , Bologa Cristina , Neagu Tiberiu Paul , Mirea Liliana , Grintescu Ioana Marina 
Published: November 2020

Abstract
Nowadays, schizophrenia is treated with atypical antipsychotics that can determine neuroleptic malignant syndrome or rhabdomyolysis appearance. In addition to trauma and muscular hypoxia, there are some drugs and toxins associated with rhabdomyolysis development, among which olanzapine. A case of severe rhabdomyolysis syndrome, with extremely high levels of serum creatine kinase (CK), followed by acute kidney failure, secondary to olanzapine overdose and prolonged immobilization is outlined. Continuous renal replacement therapy was performed, with a slow clearance of serum CK levels. Under supportive therapy, systemic alkalinisation with volume resuscitation and corticotherapy, patient’s general condition was improved, as well as his lower limb paresis. He followed frequent psychiatric evaluations and psychotherapies, before and after being transferred to a medical service. Rhabdomyolysis diagnosis is difficult in mild cases due to non-specific signs and symptoms, but it also has some typical manifestation, generically called “the rhabdomyolysis syndrome triad”. The treatment is usually supportive; renal replacement therapy is required in the presence of acute kidney injury unresponsive to aggressive volume resuscitation. The systemic myoglobin release is responsible for renal injury. Olanzapine muscle toxicity can lead to severe rhabdomyolysis syndrome complicated with acute kidney injury and multiple organ dysfunction syndrome. Rapid identification and aggressive therapeutic management are essential for improving patients’ outcome and prevent the occurrence of irreversible injuries.
Anticoagulation in COVID – 19: An Update
Authors: Tiwari Nishant R , Khatib Khalid I , Dixit Subhal B , Rathore Prajay K , Melinkeri Sameer , Ganapule Abhijeet , Borawake Kapil S , Mhatre Ujwala 
Published: November 2020

Abstract
The novel coronavirus disease, 2019 (COVID – 19) evolved as an unprecedented pandemic. The severe acute respiratory syndrome-corona virus-2 (SARS-CoV-2) infection has been associated with significantly deranged coagulation parameters and increased incidence of thrombotic events. Deranged coagulation parameters, such as D-dimers and fibrin degradation products, can indicate a poor prognosis, and their measurement will help stratify the patients according to the disease severity, need of intensive care unit admission, and prediction of the clinical course. Gaps in understanding the natural history of the disease cause difficulties in tailoring therapies and optimizing the management of patients. Lack of specific treatment further complicates this situation. While thrombotic events can cause significant morbidity and mortality in patients, a focused approach to the prevention and treatment of venous thromboembolism (VTE) can, to a great extent, decrease the disease burden caused by thrombotic diseases. Pharmacological prophylactic anticoagulants and mechanical therapies such as pneumatic compression devices can help prevent venous thromboembolism and other thrombotic events. Thrombotic events due to COVID-19, their prevention and management, are the focus of this paper, with the prospect of providing insights into this relatively unexplored area.