bluuebunny/crossref_metadata_2025 huggingface dataset:
Dissecting the effects of water guest adsorption and framework breathing on the AlO4(OH)2 centres of metal–organic framework MIL-53 (Al) by solid state NMR and structural analysis
Authors: Khudozhitkov Alexander E. , Arzumanov Sergei S. , Toktarev Alexander V. , Cherepanova Svetlana V. , Gabrienko Anton A. , Kolokolov Daniil I. , Stepanov Alexander G.
Published: August 2021

27Al MAS NMR is used to differentiate the effects of pore contraction/expansion and water adsorption in breathing MIL-53 (Al) MOF.
Crown ethers in hydrogenated graphene
Authors: Guo Kai , Liu Sitong , Tu Haoming , Wang Zhikun , Chen Liang , Lin Haiqing , Miao Maosheng , Xu Jing , Liu Wei
Published: August 2021

Graphane could serve as an ideal platform to rigidify the highly flexible crown ethers, which will greatly improve the binding strength and selectivity of crown ethers with metal cations and open up new applications for crown ethers and graphane.
Effects of ligands on (de-)enhancement of plasmonic excitations of silver, gold and bimetallic nanoclusters: TD-DFT+TB calculations
Authors: Asadi-Aghbolaghi Narges , Pototschnig Johann , Jamshidi Zahra , Visscher Lucas
Published: August 2021

The TD-DFT+TB approach is shown to efficiently describe large atomistic models of plasmonic nanocrystals protected with ligands.
Progress and future challenges in passive NO adsorption over Pd/zeolite catalysts
Authors: Zhao Huawang , Hill Alexander J. , Ma Lei , Bhat Adarsh , Jing Guohua , Schwank Johannes W.
Published: August 2021

Proposed NO adsorption cycles over Pd/zeolite materials.
Detection of microalgae objects based on the Improved YOLOv3 model
Authors: Cao Mengying , Wang Junsheng , Chen Yantong , Wang Yuezhu
Published: August 2021

A method to identify microalgae based on an Improved YOLOv3 model was proposed. It can provide reliable and real-time identification.
Catalytic, aerobic depolymerization of epoxy thermoset composites
Authors: Navarro Carlos A. , Ma Yijia , Michael Katelyn H. , Breunig Hanna M. , Nutt Steven R. , Williams Travis J.
Published: August 2021

Fully cured carbon fiber-epoxy composite materials are recycled by a manganese and aluminum catalyzed, aerobic catalysis process specifically designed for high-performance amine-linked epoxy materials commonly used in aerospace manufacturing.
Dipolar HCP materials as alternatives to DMF solvent for azide-based synthesis
Authors: Gao Feng , Bai Rongxian , Li Minghao , Gu Yanlong
Published: August 2021

Hypercrosslinked polymers HCP-DMF and HCP-DMF-SO3H containing abundant and flexible DMF moieties were designed and synthesized.
Multi-stimuli-responsive hydrogels and their medical applications
Authors: Pourjavadi Ali , Heydarpour Rozhin , Tehrani Zahra Mazaheri
Published: August 2021

This review highlights the medical applications of multi-stimuli-responsive hydrogels as self-healing hydrogels, antibacterial materials and drug-delivery systems.
A highly efficient yet stable salamo-type fluorescent chemosensor with multiple responses to Cu2+and S2−
Authors: Yao Guang-Xu , Li Peng , Zhang Jin-Qiang , Wang Li , Liu Hui , Dong Wen-Kui
Published: August 2021

A new salamo-type compound H3L has been synthesized, and exploited as a chemosensor with multiple responses to Cu2+ and S2−. The crystal structure of the Cu(ii)  complex has been determined by X-ray crystallographic analysis.
A sustainable approach to cathode delamination using a green solvent
Authors: Buken Onurcan , Mancini Kayla , Sarkar Amrita
Published: August 2021

A green solvent-based methodology was developed for delaminating cathode active materials from aluminium current collectors in end-of-life Li-ion batteries.
Recent progress of biomimetic motions—from microscopic micro/nanomotors to macroscopic actuators and soft robotics
Authors: Zeng Hongbo , Wang Yu , Jiang Tao , Xia Hongqin , Gu Xue , Chen Hongxu
Published: August 2021

Biomimetic motions are derived from the many different functional materials and/or intricate and highly organized structure of the biological material from the molecular to the nanoscale, microscale and macroscale.
Coupling of a new porphyrin photosensitizer and cobaloxime cocatalyst for highly efficient photocatalytic H2 evolution
Authors: Bodedla Govardhana Babu , Wong Wai-Yeung , Zhu Xunjin
Published: August 2021

A porphyrin photosensitizer ZnDC(p-NI)PP containing naphthalimide energy donor chromophores and 4-carboxyphenyl substituents produces a high hydrogen evolution rate (ηH2) of 35.70 mmol g−1 h−1, turnover number of 5958, and apparent quantum efficiency of 10.01%.
Selenium infiltrated hierarchical hollow carbon spheres display rapid kinetics and extended cycling as lithium metal battery (LMB) cathodes
Authors: Wang Yixian , Hao Hongchang , Hwang Sooyeon , Liu Pengcheng , Xu Yixin , Boscoboinik J. Anibal , Datta Dibakar , Mitlin David
Published: August 2021

A one-step activation approach is demonstrated to synthesize hierarchically porous hollow carbon spheres that host Se (Se@HHCS), which allows for exceptional fast charge and cycling performance in generic carbonate electrolyte without any additives.
The external electric field effect on the charge transport performance of organic semiconductors: a theoretical investigation
Authors: Lu Xueying , Sun Yajing , Hu Wenping
Published: August 2021

We found that the external electric field can influence the structures and properties of organic semiconductors, and carefully considering the heteroatoms, symmetry and conjugation degree is possible to achieve directional mobility regulation.
Ion release behavior of vanadium-doped mesoporous bioactive glass particles and the effect of the released ions on osteogenic differentiation of BMSCs via the FAK/MAPK signaling pathway
Authors: Li Jiangfeng , Li Junying , Wei Yuhao , Xu Na , Li Jingtao , Pu Ximing , Wang Juan , Huang Zhongbing , Liao Xiaoming , Yin Guangfu
Published: August 2021

V(v) ions released from V-MBG promote osteogenic differentiation of rBMSCs via FAK/MAPK (pERK1/2) signaling pathway in combination with the synergistic effect of Si, Ca, P ions, and V-MBG promote new bone formation in the cranial defect of rats.
Range‐ambiguity suppression for noise radar in cluttered environment via sparse recovery
Authors: Lu Xingyu , Yu Wenchao , Xia Mengying , Su Weimin , Gu Hong
Published: August 2021

Range ambiguity suppression is a significant problem in traditional pulse‐Doppler radar systems, especially when the pulse repetition frequency is set high to avoid Doppler ambiguity. One possible way to deal with such problem is to apply the noise radar system, by transmitting pulse‐agile waveforms and using a group of matched filters as the receiver to accumulate the power of unambiguous echoes while dispersing the range‐ambiguous ones. However, when strong targets or heavy clutters exist, the dispersed ambiguous power is still high, which leads to high range‐Doppler sidelobes and overwhelms the weak targets. This paper explores a new way to deal with the range‐ambiguity suppression problem in noise radar. The range‐ambiguity suppression as a sparse recovery problem is formulated, and then both the unambiguous and ambiguous targets (and/or clutters) can be simultaneously reconstructed. The proposed method can enhance the range‐ambiguity suppression performance and synthetic an ambiguity‐free range‐Doppler map with a low sidelobe level, which ensures the weak target recovery performance even in a cluttered environment.
Neuroprotective Effects of Delta-9-Tetrahydrocannabinol against FeSO4- and H2O2-Induced Cell Damage on Dopaminergic Neurons in Primary Mesencephalic Cell Culture
Authors: Moldzio Rudolf , Unterberger Alexander , Krewenka Christopher , Kranner Barbara , Radad Khaled
Published: August 2021

Delta-9-Tetrahydrocannabinol and other phytocannabinoids have been previously demonstrated to possess neuroprotective effects in murine mesencephalic cell culture models of Parkinson’s disease, in which increased levels of superoxide radicals led to the loss of dopaminergic neurons. In these models, delta-9-tetrahydrocannabinol did not scavenge these radicals but displayed antioxidative capacity by increasing glutathione levels. Based on these findings, in the present study, we investigated whether the neuroprotective effect of delta-9-tetrahydrocannabinol can also be detected in FeSO4- and H2O2-stressed cells. Mesencephalic cultures were concomitantly treated with FeSO4 (350 μM) or H2O2 (150 μM) and delta-9-tetrahydrocannabinol (0.01, 0.1, 1, 10 μM) on the 12th days in vitro for 48 h. On the 14th DIV, dopaminergic neurons were stained immunocytochemically by tyrosine hydroxylase, and fluorescently using crystal violet, Hoechst 33342, and JC-1. FeSO4 and H2O2 significantly reduced the number of dopaminergic neurons by 33 and 36%, respectively, and adversely affected the morphology of surviving neurons. Moreover, FeSO4, but not H2O2, significantly decreased the fluorescence intensity of crystal violet and Hoechst 33342, and reduced the red/green ratio of JC-1. Co-treatment with delta-9-tetrahydrocannabinol at the concentrations 0.01 and 0.1 μM significantly rescued dopaminergic neurons in FeSO4 and H2O2-treated cultures by 16 and 30%, respectively. delta-9-Tetrahydrocannabinol treatment also led to a higher fluorescence intensity of crystal violet and Hoechst 33342, and increased the red/green fluorescence ratio of JC-1 when concomitantly administered with FeSO4 but not H2O2. To conclude, delta-9-tetrahydrocannabinol rescues dopaminergic neurons against FeSO4- and H2O2-induced neurotoxicity. Using fluorescence dyes, this effect seems to be mediated partially by restoring mitochondrial integrity and decreasing cell death, particularly in FeSO4-treated cultures.
Muscle Oxygenation, Neural, and Cardiovascular Responses to Isometric and Workload-matched Dynamic Resistance Exercise
Authors: Kounoupis Anastasios , Dipla Konstantina , Tsabalakis Ioannis , Papadopoulos Stavros , Galanis Nikiforos , Boutou Afroditi K. , Vrabas Ioannis S. , Smilios Ilias , Zafeiridis Andreas
Published: August 2021

Differences in blood flow patterns and energy cost between isometric and dynamic resistance exercise may result to variant cardiovascular, neural, and muscle metabolic responses. We aimed to compare the cardiovascular, baroreceptor sensitivity, and muscle oxygenation responses between workload-matched, large muscle-mass isometric and dynamic resistance exercises. Twenty-four young men performed an isometric and a dynamic double leg-press protocol (4 sets×2 min) with similar tension time index (workload). Beat-by-beat hemodynamics, baroreceptor sensitivity, muscle oxygenation, and blood lactate were assessed. The increase in blood pressure was greater (p<0.05) in the 1st set during dynamic than isometric exercise (by ~4.5 mmHg), not different in the 2nd and 3rd sets, and greater in the 4th set during isometric exercise (by ~5 mmHg). Dynamic resistance exercise evoked a greater increase in heart rate, stroke volume, cardiac output, and contractility index (p<0.05), and a greater decline in peripheral resistance, baroreceptor sensitivity, and cardiac function indices than isometric exercise (p<0.05). Participants exhibited a greater reduction in muscle oxyhemoglobin and a greater increase in muscle deoxyhemoglobin in dynamic versus isometric exercise (p<0.001–0.05), with no differences in total hemoglobin and blood lactate. In conclusion, large muscle-mass, multiple-set isometric exercise elicits a relatively similar blood pressure but blunted cardiovascular and baroreceptor sensitivity responses compared to workload-matched dynamic resistance exercise. Differences in blood pressure responses between protocols appear small (~5 mmHg) and are affected by the number of sets. The muscle oxidative stimulus is greater during dynamic resistance exercise than workload-matched isometric exercise.
Simultaneous Bilateral Primary Occlusion of the Ophthalmic Artery due to Florid Giant Cell Arteritis
Authors: Berger Tim , Xanthopoulou Kassandra , Zemova Elena , Bohle Rainer M. , Seitz Berthold , Abdin Alaadin
Published: August 2021

Purpose To report a case of simultaneous bilateral ophthalmic artery occlusion in diagnosed giant cell arteritis (GCA).

Observations A 77-year-old male patient presented to the emergency department with simultaneous vision loss in both eyes for 3 hours. Headache at both temples and jaw claudication had been present for 3 weeks. Laboratory values demonstrated an initially increased C-reactive protein (CRP) of 202.0 mg/L and an erythrocyte sedimentation rate (ESR) of 100 mm within the first 20 minutes. Duplex sonography of the right and left temporal arteries revealed a “halo sign.” A case of GCA was suspected, and intravenous high-dose methylprednisolone therapy was immediately administered. The clinical examination revealed a bilateral central retinal artery occlusion and fluorescein angiography showed a hot optic disc in the right eye and patchy choroidal hypoperfusion in both eyes. Biopsy of the left temporal artery was performed, which confirmed a florid temporal arteritis with complete thrombotic occlusion of the vascular lumen. Despite a good response to the administered
therapy (CRP 17.0 mg/L 1 week after initiation), the visual prognosis was significantly limited through retinal and optic nerve involvement. By the follow-up examination 8 weeks later, the near visual acuity was 20/400 in the right and left eye at a distance of 16 inches.

Conclusion and Importance We hereby present a simultaneous bilateral ophthalmic artery occlusion as a rare complication of GCA. The combination of central retinal artery occlusion, arteritic anterior ischemic optic neuropathy, and choroidal hypoperfusion suggests an acute inflammatory involvement of the ophthalmic artery. In cases of the slightest suspicion of giant cell arteritis, an immediate high-dose steroid therapy initiation is of utmost importance.
The Performance of Universal Adhesives on Orthodontic Bracket Bonding
Authors: Ugurlu Muhittin , Buyukcavus Muhammed Hilmi
Published: August 2021

Objective This article aimed to assess the effects of double application of universal adhesives on the shear bond strength of orthodontic brackets.

Materials and Method Seventy-five extracted human premolars were used. The teeth were randomly assigned into five groups based on the adhesive procedure (n = 15). The universal adhesives Scotchbond Universal (3M Oral Care) and Prime&Bond Universal (Dentsply) were used (following manufacturer’s instructions and double application). Transbond XT Primer (3M Unitek) was employed as control. Following adhesive application, the brackets were bonded on the tooth surfaces. After storage in distilled water for 24 hours at 37°C, the specimens were subjugated to the shear bond strength test under a universal testing machine (Autograph AGS-X; Shimadzu). Data were analyzed with one-way analysis of variance and least significant difference tests (p = 0.05). The adhesive remnant index (ARI) was determined using a stereomicroscope (S4E; Leica Microsystems). Data of ARI scores were submitted to Pearson’s chi-square test.

Results The highest shear bond strengths were acquired with Scotchbond Universal (p < 0.05). The double application of Scotchbond Universal did not impact the shear bond strength. The lowest shear bond strength was found in Prime&Bond Universal (p < 0.05). The double application of Prime&Bond Universal increased the shear bond strength (p < 0.05). There were no significant differences in ARI scores among the groups (p > 0.05).

Conclusion The universal adhesives may be an alternative for the bonding of orthodontic brackets. The double application of universal adhesives might improve the shear bond strength of orthodontic brackets depending on the material.
Presence of Gingival Recession or Noncarious Cervical Lesions on Teeth under Occlusal Trauma: A Systematic Review
Authors: Senos Tróia Pedro Maria Bastião Peliz , Spuldaro Tobias Rauber , da Fonseca Patrícia Alexandra Barroso , Fernandes Gustavo Vicentis de Oliveira
Published: August 2021

The goal of this research was to carry out a systematic review to verify the possible influence of occlusal factors on the occurrence of gingival recession and noncarious cervical lesions. To answer the specific research question—whether gingival recession or noncarious cervical lesions on teeth are present under occlusal trauma—a bibliographic search was conducted at MEDLINE/PubMed, Web of Science, and Gray Literature databases focusing on articles published, following strict inclusion criteria based on randomized clinical trials, controlled clinical studies, and case series, with restricted language (English) and publication date between March 2010 and March 2020, considering patients with occlusal trauma and gingival recession/noncarious cervical injuries. Questionnaires, animal or laboratory studies, case reports, and interviews were excluded. First, the title and/or abstract of the articles obtained were analyzed and, finally, a full-text reading was performed. Given the amount and diversity of the final studies, a qualitative analysis was made. Based on the established criteria, it was possible to obtain an initial 757 articles. After screening, five articles were included, and then qualitative analysis was performed. The results described in the articles were different, given the heterogeneity of the articles subjected to analysis. A few studies were published in the past 10 years, suggesting that the traumatic occlusion seems to be associated with the occurrence of the noncarious cervical lesion while it is not possible to arrive at a conclusion with regard to the association of gingival recession and occlusal trauma.

Key Message

Even though many professionals have categorically affirmed that there is a relation between trauma occlusal and gingival recession/noncarious cervical lesion, this systematic review found the absence of strong literature to really prove it. Once defined, it allows the therapeutic focus to centre on the causal or contributing factors and preventing or reducing future recurrence.
Pyrocardan Scaphotrapeziotrapezoid Joint Arthroplasty for Isolated Osteoarthritis: Results after a Mean Follow-Up of 5 Years
Authors: Cholley-Roulleau Martin , Bouju Yves , Lecoq Flore-Anne , Fournier Alexandre , Bellemère Philippe
Published: August 2021

Background Isolated scaphotrapeziotrapezoid (STT) osteoarthritis (OA) mainly develops in women over 50 years of age in a bilateral manner. Many surgical treatments are available, including distal scaphoid resection with or without interposition, trapeziectomy, and STT arthrodesis. However, there is a controversy about which procedure is the most effective.

Purposes The purpose of this study was to report the outcomes of the Pyrocardan implant for treating STT isolated OA at a mean follow-up of 5 years.

Patients and Methods Consecutive patients who underwent STT arthroplasty using the Pyrocardan were reviewed retrospectively by an independent examiner who performed a clinical and radiological evaluation.

Results The mean follow-up time was 5 years (range 3–8 years). Thirteen patients (76%) were followed for more than 5 years. Between the preoperative assessment and the last follow-up, pain levels decreased significantly. There was no significant difference in the mean Kapandji opposition score. Grip and pinch strengths were 88 and 91% of the contralateral side. The active range of motion in flexion–extension and radioulnar deviation was not significantly different to the contralateral side (119° vs. 121° and 58° vs. 52°, p > 0.1). Functional scores were improved significantly. No identifiable differences were found in the radioscaphoid, capitolunate, and scapholunate angles before and after surgery. In three cases, the preoperative dorsal intercalated scapholunate instability (DISI) failed to be corrected. In one case, DISI appeared after the procedure. There was one asymptomatic dislocation of the implant. Calcification around the trapezium and/or distal scaphoid was found in four cases. The survival rate of the implant without reoperation was 95%.

Conclusions In the medium term, Pyrocardan implant is an effective treatment for STT OA as it reduces pain, increases grip strength, and maintains wrist mobility. This is consistent with the results of other published case series using pyrocarbon implants. It provides a high rate of patient satisfaction. Nevertheless, the surgical procedure must be done carefully to avoid STT ligament damage, periarticular calcifications, or dislocation.
‘Do Poor People’s Dreams Ever Come True?’ Educational Aspirations and Lived Realities in Urban Slums in Dhaka, Bangladesh
Authors: Sultan Maheen , Seager Jennifer , Rashid Sabina F. , Haque Mohammed Ashraful , Khondaker Sahida
Published: August 2021

Bangladesh has made progress in advancing adolescent girls’ education, but there remain substantial evidence gaps around age and gender differences in motivations, retention, and access to education for adolescents living in urban slums. This article draws on quantitative and qualitative data collected in 2017 and 2018 by Gender and Adolescence: Global Evidence (GAGE) with adolescents aged 10–17 across three low-income areas in Dhaka to explore adolescent educational attainment, aspirations, and environmental factors that constrain both. We find high educational and professional aspirations among adolescents and their parents, with parental support being an important predictor of both current enrolment and adolescent aspirations. Location is also an important predictor of adolescent aspirations and enrolment, highlighting the importance of infrastructure and services, integration into the city, and stability of the community (including schools and facilities), along with higher incomes and better employment opportunities for households.
Tin(II) thiocyanate Sn(SCN)2 as an ultrathin anode interlayer in organic photovoltaics
Authors: Chaopaknam Jidapa , Wechwithayakhlung Chayanit , Nakajima Hideki , Lertvanithphol Tossaporn , Horprathum Mati , Sudyoadsuk Taweesak , Promarak Vinich , Saeki Akinori , Pattanasattayavong Pichaya
Published: August 2021

We report the application of a coordination polymer semiconductor, tin(II) thiocyanate [Sn(SCN)2], as an ultrathin anode interlayer in organic photovoltaics (OPVs). Sub-10 nm layers of Sn(SCN)2 with high smoothness and excellent transparency having an optical bandgap of 3.9 eV were deposited from an alcohol-based solution at room temperature without post-deposition annealing. Inserting Sn(SCN)2 as an anode interlayer in polymer:fullerene OPVs drastically reduces the recombination loss due to the exciton-blocking energy levels of Sn(SCN)2. At the optimum thickness of 7 nm, an average power conversion efficiency (PCE) of 7.6% and a maximum of 8.1% were obtained. The simple processability using common solvents gives Sn(SCN)2 a distinct advantage over the more well-known copper(I) thiocyanate (CuSCN). The electronic and optical properties of Sn(SCN)2 make it interesting for applications in large-area electronic devices.
A classification of invertible phases of bosonic quantum lattice systems in one dimension
Authors: Kapustin Anton , Sopenko Nikita , Yang Bowen
Published: August 2021

We study invertible states of 1D bosonic quantum lattice systems. We show that every invertible 1D state is in a trivial phase: after tensoring with some unentangled ancillas, it can be disentangled by a fuzzy analog of a finite-depth quantum circuit. If an invertible state has symmetries, it may be impossible to disentangle it in a way that preserves the symmetries, even after adding unentagled ancillas. We show that in the case of a finite unitary symmetry G, the only obstruction is an index valued in degree-2 cohomology of G. We show that two invertible G-invariant states are in the same phase if and only if their indices coincide.
Conditions of rogue-wave generation in gyrotrons
Authors: Rozental R. M. , Sergeev A. S. , Tarakanov V. P. , Zotova I. V. , Rozental S. R. , Ginzburg N. S.
Published: August 2021

Based on a single mode distributed non-stationary model of the gyrotron, we investigate the influence of the non-uniformity of the guiding magnetic field on the processes of rogue-wave generation. We estimate the allowable level of non-uniformity at which the statistical properties of the system are retained. 3D PIC simulations of a Ka-band gyrotron fully verify the theoretical predictions.
A quasi complex-lamellar solution for a hemispherically bounded cyclonic flowfield
Authors: Majdalani Joseph , Williams Langston L.
Published: August 2021

This work describes an inviscid solution for a cyclonic flowfield evolving in a hemispherical chamber configuration. In this context, a vigorously swirling motion is triggered by a gaseous stream that is introduced tangentially to the inner circumference of the chamber's equatorial plane. The resulting updraft spirals around while sweeping the chamber wall, reverses direction while approaching the headend, and then tunnels itself out through the inner core portion of the chamber. Our analysis proceeds from the Bragg–Hawthorne formulation, which proves effective in the treatment of steady, incompressible, and axisymmetric motions. Then using appropriate boundary conditions, we are able to obtain a closed-form expression for the Stokes streamfunction in both spherical and cylindrical coordinates. Other properties of interest are subsequently deduced, and these include the principal velocities and pressure distributions, vorticity, swirl intensity, helicity density, crossflow velocity, and the location of the axial mantle; the latter separates the outer annular updraft from the inner, centralized downdraft. Due in large part to the overarching spherical curvature, the cyclonic motion also exhibits a polar mantle across which the flow becomes entirely radial inward. Along this lower and shorter spherical interface, the polar velocity vanishes while switching angular direction. Interestingly, both polar and axial mantles coincide in the exit plane where the ideal outlet size, prescribed by the mantle position, is found to be approximately 70.7% of the chamber radius. We thus recover the same mantle fraction of the cyclonic flow analog in a right-cylindrical chamber where an essentially complex-lamellar motion is established.
A parameter-free physical model for gas–surface interaction
Authors: Liang Tengfei , Zhang Jun , Li Qi
Published: August 2021

Phenomenological gas–surface interaction models and various slip models are nowadays used as the boundary condition in the study of rarefied gas flows and microflows at the microscopic and macroscopic levels, respectively. However, most existing models depend on certain accommodation coefficients which are difficult to be determined prior to application. A physical-based gas–surface interaction model developed recently shows great flexibility and promising performance in capturing the complex gas–surface interaction process at the boundary. Particularly, the new model only employs three input parameters with clear physical meanings. In this work, a “bottom-up” approach for determining the input parameters of the model from the microscopic properties of the gas–surface system is explored. Because of the limitation of the estimation model for the local collision accommodation coefficient, this approach is restricted to light gas-heavy solid surface systems. Consequently, the physical-based gas–surface interaction model no longer involves unknown parameters like the accommodation coefficients in the traditional boundary conditions for rarefied gas flows. Benchmarked by molecular dynamics simulations of the non-isothermal gas–surface interaction process, the parameter-free gas–surface interaction model can accurately predict the reflected velocity distribution as well as the accommodation coefficients on the surface with different corrugation, binding strength, and relative stiffness. Its capability of capturing the influences of surface temperature and gas molecular mass on the gas–surface energy exchange is also demonstrated.
RAS interaction with Sin1 is dispensable for mTORC2 assembly and activity
Authors: Castel Pau , Dharmaiah Srisathiyanarayanan , Sale Matthew J. , Messing Simon , Rizzuto Gabrielle , Cuevas-Navarro Antonio , Cheng Alice , Trnka Michael J. , Urisman Anatoly , Esposito Dominic , Simanshu Dhirendra K. , McCormick Frank
Published: August 2021

Significance

RAS proteins control many aspects of cellular biology in response to extracellular stimuli. These essential nodes of signal transduction interact with effector proteins that contain conserved RAS-binding domains. Mutations in RAS proteins are a common cause of cancer; hence, understanding the function of their downstream effectors is important for the development of novel therapies. In this study, we characterize the interaction between RAS and the effector protein Sin1, a critical component of the mTORC2, through biochemical and structural approaches. We discover that Sin1 contains an atypical RAS-binding domain and assess the role of this interaction in cells and mice. Moreover, we find that this interaction is dispensable for mTORC2 activity and assembly, suggesting an alternative function for Sin1 in cells.
Predicting the effect of confinement on the COVID-19 spread using machine learning enriched with satellite air pollution observations
Authors: Xing Xiaofan , Xiong Yuankang , Yang Ruipu , Wang Rong , Wang Weibing , Kan Haidong , Lu Tun , Li Dongsheng , Cao Junji , Peñuelas Josep , Ciais Philippe , Bauer Nico , Boucher Olivier , Balkanski Yves , Hauglustaine Didier , Brasseur Guy , Morawska Lidia , Janssens Ivan A. , Wang Xiangrong , Sardans Jordi , Wang Yijing , Deng Yifei , Wang Lin , Chen Jianmin , Tang Xu , Zhang Renhe
Published: August 2021

Significance

There is a lack of global observational data to monitor the application of nonpharmaceutical interventions (NPI) and evaluate the effect of NPIs for pandemic management in different territories. We find that economic activity reduction inferred from NO2is a driver of case deceleration in most of the territories. The effect, however, is not linear but dampens over time, and further reductions are only associated with weaker deceleration. Over the winter of 2020/2021, nearly 1 million daily COVID-19 cases could have been avoided by optimizing the timing and strength of activity reduction in different regions relative to a scenario based on the real distribution.
Video remote interpreting for home-based cognitive assessments
Authors: Gilbert Andrew Simon , Croy Samantha , Hwang Kerry , LoGiudice Dina , Haralambous Betty
Published: August 2021

Many health and social care services are implementing video remote interpreting (VRI) to deal with supply shortages and high costs of language interpreting for linguistically diverse clients. This qualitative study examines stakeholders’ perspectives on using VRI for home-based cognitive assessments, which are routinely performed with older people during aged care assessments in Australia. We conducted 25 semi-structured interviews with clients, assessors and interpreters in Melbourne and a regional Victorian city. We found that across stakeholder groups participants usually regard VRI as an acceptable alternative to face-to-face interpreting when the latter is not possible. Freelance interpreters said VRI saved on travel time and expenditure and afforded them financial and practical benefits that enabled them to better meet the high demand for their work. However, stakeholders also pointed to the limitations of VRI, including technical challenges, sound and video quality, and difficulties with positioning equipment optimally during interviews. The assessors and interpreters agreed that VRI was inappropriate when clients are known to be cognitively impaired, and that face-to-face interpreting is necessary to support these clients and ensure assessment accuracy. We suggest that plans by health or social care services to replace face-to-face interpreting with VRI should be balanced against the needs of clients and any impacts on professional practice.
A multi-dimensional analysis of the representation of conference interpreters in the Chinese media
Authors: Du Yiwei , Wang Binhua
Published: August 2021

Though interpreters’ professionalism has been discussed in interpreting studies, there have been few studies on
how the general public see the image of interpreters. The present study is a multi-dimensional analysis of the image of conference
interpreters as represented by the media, which is based on a corpus of 60 news reports about interpreting and interpreters in the
Chinese media in the past 10 years. It explores the research question: How are conference interpreters represented in the Chinese
media? Through thematic and rhetorical analysis of the headlines and body texts as well as multimodal analysis of the photos in
the news reports, it is found that conference interpreters are represented by institutional conference and diplomatic
interpreters, who are in turn represented as “stars” or public celebrities of the profession; they are frequently presented along
with big events and big names, and portrayed as affiliating to power and as distant from the public. Images of female beauties
among them are also selected and “consumed” as in popular culture. This implies a discrepancy between the self-perception of the
interpreting profession and their representation by the media.
Adaptation and validation of the Dietarian Identity Questionnaire (DIQ) into the Spanish context (Adaptación y validación al contexto español del Cuestionario de Identidad Alimentaria — DIQ)
Authors: Chinea-Montesdeoca Cristina , Suárez Ernesto , Hernández Bernardo , Duarte-Lores Isabel
Published: August 2021

The aim of this study is to adapt and validate the Dietarian Identity Questionnaire (DIQ) into the Spanish context. In an initial study, a confirmatory factor analysis was performed, obtaining good validity and goodness-of-fit indices ( CMIN/DF = 2.026; CFI = .976; NNFI = .972; SRMR = .054 and RMSEA = .057). In a second study, evidence of validity based on the relationship with other variables was analysed using the ‘Meaning of Food in Life’ questionnaire. Correlations were made and differences between people with a vegan ( N = 43), vegetarian ( N = 44) and omnivorous ( N = 115) diet were analysed. The results indicate that vegans and vegetarians differ from omnivores in all identity factors ( p = ≤ .001). In addition, differences were found between vegans and vegetarians in the Public Regard ( p = .035), Outgroup Regard ( p = .036) and Moral Motivation ( p = .036) factors. DIQ is a good instrument that can be used in studies on food choices and sustainability.
Plasmonic spin-Hall effect of propagating surface plasmon polaritons in Ni80Fe20 microstructures
Authors: Paleschke Maximilian , Chiang Cheng-Tien , Brandt Liane , Liebing Niklas , Woltersdorf Georg , Widdra Wolf
Published: August 2021

Photoexcitation and shaping of a propagating surface plasmon polariton (SPP) on silver and gold microstructures are well established and lead to the discovery of the plasmonic spin-Hall effect recently. Whereas silver is often the material of choice due to its exceptional low plasma frequency and weak damping, similar observations have not been reported for ferromagnetic metals. In this work, we report on propagating SPPs on Ni80Fe20 microstructures imaged by photoemission electron microscopy (PEEM) in combination with a tunable femtosecond laser system at MHz repetition rate. Circular dichroic (CD) images in threshold PEEM show clear edge-induced SPPs with sub-micrometer wavelength and propagation length of about 3.5 μm. Analysis of the interference patterns as well as the coupling of the optical spin angular momentum to the observed fringe fields reveal propagation characteristics exclusive to evanescent waves and the presence of the plasmonic spin-Hall effect. Our work provides direct evidence that many materials with a high plasma frequency allow for excitation and observation of propagating SPPs at the dielectric/metal interface via CD PEEM imaging, enabling magnetoplasmonic investigation of common ferromagnets on nanometer length and femtosecond time scales.
Dual-polarization topological phases and phase transition in magnetic photonic crystalline insulator
Authors: Xi Xiang , Li Xi-Ming , Ye Kang-Ping , Wu Hua-Bing , Chen Jian , Wu Rui-Xin
Published: August 2021

Two-dimensional topological photonic crystals have rapidly emerged as a recent and fascinating branch of photonic research. However, most of them were limited to a specific type of polarization, TE or TM polarization. Here, we explored the dual-polarization topological phases in two-dimensional magnetic photonic crystal (PC) which are composed of ferrite rod clusters in the plasma background. Under the perturbations of the bias magnetic field and/or the cluster distortion in the unit cell, the PC exhibited dual-polarization topological phases, including the quantum Hall (QH) phase, the higher-order quantum spin Hall (HO-QSH) phase and the conventional insulator (CI) phase. We studied the topological nature of these phases by the Wilson loop, Chern number, and unidirectional edge states. Intriguingly, we showed that the HO-QSH phases could present in PC of C
3v
symmetry instead of being restricted to C
6v
symmetry. The lower symmetry enlarges the gap in the edge states, which helps for the emergence of corner states. By continuously deforming the unit cell configuration, we demonstrated the phase transition in the system was dual-polarization. Our results extend the topological phases in the PCs and pave the way for the dual-polarization topological devices and their applications.
A Generalized Long-term Load Forecasting Model Using Modified Grey Wolf Optimization Algorithm
Authors: Rizk-Allah Rizk M. , El-Desoky I. M. , Ayad A. N.
Published: August 2021

Annual accurate predicting is important for long-term planning of the electricity company because it always seeks to achieve the reliability and sustainability for the electrical services. The process of long term load forecasting (LTLF) is implemented in several manners depending on random variables affecting the consumption of the load. This paper introduces two different strategies that have been utilized for annual electrical peak load (PL) for Jordan. The first strategy used in this paper is based on different historical features gathered form national electric power company (NEPCO) such as (population growth, the gross domestic product of the country and the historical annual PL). The second strategy is based on the historical electrical peak load only. The work includes a comparison process using three different optimization algorithms particle swarm (PSO), grey wolf (GWO) and modified grey wolf (MGWO-based on the concept of aligned) to train a feed forward neural network (FFN). The proposed MGWO-FFN gives the best results of both the twostrategies than GWO-FFN and PSO-FFN. Results of the two strategies are presented and indicate the superiority of the second strategy on the first one.
Error analysis between two different fuzzy multiplication operations on Triangular Fuzzy Number
Authors: Nigm Khaled Abu-Bakr , Elsherif Ahmed K , Salah Ismail Ahmed
Published: August 2021

One of the basic contents of fuzzy mathematics is the mathematical operations of fuzzy numbers. But still some of the fuzzy mathematical operations are not determined. There are some operations between fuzzy numbers are exact and there are approximated operations. In this paper, a comparison has been presented between two different fuzzy multiplication operations. One of these two fuzzy multiplication operations is exact with using interval arithmetic cut method and the other one is an approximation method which uses a standard approximation. In the two different methods, the fuzzy numbers will be defined as triangular fuzzy numbers because the triangular fuzzy number is the most popular one between the other shapes of fuzzy numbers. A numerical example has been presented with graphical result to show the difference between them and to analyze the error.
Preparation method of epoxy resin sand based permeable material
Authors: Bin Yang , Zhixuan Zhang , Na Zhu , LinYing  , Bo Ma , Meijie Wang , Yujuan Liu , Zhiqiang Wang , Chunlin Wang
Published: August 2021

The sand was pretreated in different ways, and the epoxy resin was selected as the cementing material to prepare the epoxy resin sand based permeable material. This kind of modification and treatment of permeable materials can obtain more superior performance and more widely used permeable materials, which provides a material basis for the construction of sponge city.
Crystallization and melting behavior of polyvinylidene fluoride in confined space of nanotubes
Authors: Dai Xiying , Guo Pengpeng , Xing Zhaoliang , Yang Wei , Wang Kun , Zhang Chong , Chen Xin
Published: August 2021

Homopolymer poly (vinylidene fluoride) (PVDF) thin films were fabricated via high pressure process and then PVDF film was melt into porous anodic aluminum oxide (AAO) templates to form hollow nanotubes and isothermally crystal at a certain temperature. Scanning electron microscopy (SEM) and Transmission Electron Microscope (TEM) is used to observed the microstructure of nanotubes. To explore the influence of nanopores on the crystallization and melting of PVDF, differential scanning calorimetry (DSC) is used. It turns out that crystal phase is restrained in the nanotubes and mainly exists and at high temperature within relatively large nanopores and the bulk. As for phase, the increase of isothermal crystallization temperature results in the increase of melting temperature.
Research on Application of Directional Long Drilling Fracturing Technology in 1930 Coal Mine
Authors: Lei HAN
Published: August 2021

The solidity coefficient of the main coal seam in Xinjiang Coking Coal Group 1930 Coal Mine is below 0.3, which is a soft outburst coal seam with poor air permeability, a small effective range of gas drainage drilling, low porosity of soft coal seam, low gas drainage rate, and unsatisfactory drainage effect. Using directional drilling equipment to construct directional long drilling, combined with the hydraulic fracturing pump set independently developed by Xi’an Research Institute, directional drilling were constructed in the 1930 coal mine 1600 level 6# coal seam, and hydraulic fracturing was carried out. The results show that after the hydraulic fracturing of the 6# coal seam, the production has been stable for nearly 6 months. During the period, the average gas drainage rate of the drilling was 134.9m3/d (maximum 561.7m3/d), which was 2.10 times that before fracturing, The average drainage concentration is 1.90%, which is 1.45 times that before fracturing. At present, the total amount of gas drainage is 25,900 m3, which is 4 times the original amount. This technology has achieved enhanced permeability of broken soft coal seam, increased drainage volume, extended drainage time, and advanced gas outburst elimination at a long distance. It provides a technical guarantee for the enhanced permeability enhancement of the broken soft low-permeability outburst coal seam and the high-efficiency underground gas drainage.
Study on Forming Technology of Composite Micro-wire Made From AF and PLA
Authors: Ailing ZOU , Zhongde SHAN , Yiwei CHEN , Shaozong WANG , Xiaojun LIU
Published: August 2021

In order to improve the interlaminar shear property of the composites manufactured by the additive of aramid fiber (AF) reinforced with polylactic acid (PLA), the preparation process of AF reinforced thermoplastic resin composite micro-wires has been optimized, which could promote impregnated and toughness. The influence of different water bath temperatures on the interlaminar shear properties of the composites was studied. And the results showed that the largest interlaminar shear strength (ILSS) of AF/PLA composite material was 12.0 MPa, which had confirmed in the water bath temperature of 30°C. As the bath temperature increased, the interlaminar shear performance decreased, and the ILSS of composite micro-wires in 70°C water bath was 74.67% of that in 30°C water bath. The composite fiber with high impregnation degree and good toughness has laid a foundation for further research on additive manufacturing of AF/PLA composite.
Effects of Isothermal Temperature on Microstructure and Properties for N80 Oil Pipe Steel
Authors: Yimeng Fang , Xi Chen , Yadong Li , Baoshan Cao , Tao Xu , Xun Gong , Rongchun Wan , Wenhua Wei , Xiaozhou Zhao , Qingyan Ma , Shijun Ni , Zunwu Zhang , Xin Tian
Published: August 2021

Some key temperature parameters in the process of controlled rolling and controlled cooling of N80 grade oil casing steel were simulated by heat treatment method, and the effects of different isothermal temperatures on the microstructure and mechanical properties of N80 grade oil casing steel were studied. The results show that when the isothermal temperature increases from 500 °C to 550 °C, the influence of different microstructure volume and grain size is not obvious; when the temperature reaches 600 °C, the ferrite grain coarsens obviously, the volume fraction of ferrite increases obviously, and the volume fraction of pearlite and bainite decreases obviously. In addition, when the isothermal temperature increases from 500 °C to 550 °C, the yield strength and tensile strength of the test steel increase slightly, and the plastic toughness increases obviously; but when the temperature increases to 600 °C, the yield strength and tensile strength of the test steel decrease obviously, and the plastic toughness continues to increase. The optimum isothermal treatment temperature of test steel is 550 °C.
Application of BIM in green building materials management
Authors: Na Zhu , Bin Yang , Zhixuan Zhang , Meijie Wang
Published: August 2021

Under the background of green building development, aiming at the characteristics of green building materials life cycle management, it has become a trend to apply building information modeling(BIM) to green building materials management. The research shows that BIM Technology can meet the needs of green building materials fine management, realize the information sharing and exchange among all participants in the whole life cycle management of green building materials, and effectively promote the management level of green building materials informatization in green building projects. This paper analyzes the application points and problems of BIM in the management of green building materials, and puts forward corresponding suggestions for discussion.
Influence of material selection on fixture accuracy of CNC machine tools
Authors: Li Ru , Xin Miaomiao , Wu Jialiang , Kong Beibei
Published: August 2021

Fixtures are commonly used tools for CNC machine tools to clamp workpieces. Due to the high requirements for its own position and motion accuracy during the operation of a CNC machine tool, in addition to its own motion accuracy, the positioning accuracy of the fixture is also an important factor affecting the overall accuracy. In the experiment, two fixture materials of 45# and 65Mn were selected, and the two fixtures with wedge-shaped positioning surface and circular positioning surface were compared. The data showed that: 1. The accuracy of fixtures with symmetrical structures of the same material is better than fixtures with asymmetrical structures; 2. The repeated positioning accuracy of 65Mn material fixture is better than that of 45 # material fixture. Therefore, the higher the positioning accuracy of the fixture made of high hardness and good rigidity materials.
Study on the Pottery composition of Neolithic Age in Liaoxi Area
Authors: Gao Shoulei , Si Hongwei , Wu Shuang
Published: August 2021

The composition of 321 pieces of Neolithic pottery samples in Liaoxi Area was detected by X-ray fluorescence analyzer, and the characteristics of raw materials in different periods were analyzed by principal component analysis. The results show that the raw materials of ceramic samples are ordinary fusible clay with low SiO2 and high flux RxOy. The composition of pottery from Chahai site of Xinglongwa culture is quite different from that in other areas. The contents of Fe2O3 and MgO are obviously higher, while the contents of SiO2, Al2O3 and K2O are lower. The raw materials used for making pottery are relatively poor.