bluuebunny/crossref_metadata_2025_split huggingface dataset:
Raman spectroscopic study of benign and malignant ovarian tissues
Authors: Fan Lingyun , Wang Huan , Wu Xia , Wang Shuanghui , Han Yimin , Wang Jing 
Published: March 2022

Abstract
Ovarian cancer is one of the most common female tumors all over the world, and its mortality rate ranks first among gynecological malignancies. A progressive assessment, diagnosis and remedy are significant for the proper management of the disease process. In this paper, a prompt, non-invasive and highly effective screening test for ovarian cancer was developed based on the Raman spectroscopy (RS) data of fresh ovarian tissues. Raman spectral measurements were performed on fresh ovarian tissue samples from 17 ovarian cancer patients and 14 benign ovarian tumors. We preliminarily identified the Raman peaks in the measured ovarian tissue spectra and summarized their respective characteristic peaks, indicating that specific biomolecules changed among different groups, and their differences were analyzed. The conclusions suggested that the position of the characteristic peaks of Raman spectrum of the ovarian cancer tissues and benign ovarian tissues were different. The relative intensity of ovarian cancer tissue was higher than that of benign ovarian tissue at the 1004, 1155, 1446 cm−1 with phenylalanine, protein and lipids as characteristic peaks, and the difference were significant (P < 0.05). This exploratory work demonstrates that RS may be used as a detection method for screening benign and malignant ovarian tumors.
Perspectives on photobiomodulation and combined light-based therapies for rehabilitation of patients after COVID-19 recovery
Authors: Dias Lucas D , Blanco Kate C , de Faria Clara M G , Dozza Cristine , Zanchin Elissandra M , Paolillo Fernanda R , Zampieri Kely , Laurenti Karen C , Souza Karina J O , Bruno Juliana S A , Sene-Fiorese Marcela , Pinto Maria C C , Tamae Patrícia E , Bello Liciane T , Lizarelli Rosane F Z , Panhoca Vitor H , de Aquino Júnior Antonio E , Bagnato Vanderlei S 
Published: March 2022

Abstract
The post-COVID-19 condition or ‘long COVID’ is a clinical and scientific challenge for society. In this regard, patients after COVID-19 recovery show a vast range of sequels including muscular, articular lesions, neurological, dermatological, and pulmonary issues. These clinical consequences are issues in the present and for the future. In this case, rehabilitation therapies based on photobiomodulation and combined therapies arise as excellent tools to solve it. Herein, we describe and discuss the perspectives on the use of light-based therapies such as photobiomodulation, photodynamic therapy and combined vacuum and laser therapy for rehabilitation of patients who present some sequelae of the COVID-19 infection. We did not intend to produce a comprehensive review; instead we highlight the most important and clinical protocols against these sequels. Moreover, the principles and mechanism of action of each light-based technique proposed were reported and discussed.
Insertion mechanics of amorphous SiC ultra-micro scale neural probes
Authors: Geramifard Negar , Dousti Behnoush , Nguyen Christopher , Abbott Justin , Cogan Stuart F , Varner Victor D 
Published: March 2022

Abstract

Objective. Trauma induced by the insertion of microelectrodes into cortical neural tissue is a significant problem. Further, micromotion and mechanical mismatch between microelectrode probes and neural tissue is implicated in an adverse foreign body response (FBR). Hence, intracortical ultra-microelectrode probes have been proposed as alternatives that minimize this FBR. However, significant challenges in implanting these flexible probes remain. We investigated the insertion mechanics of amorphous silicon carbide (a-SiC) probes with a view to defining probe geometries that can be inserted into cortex without buckling. Approach. We determined the critical buckling force of a-SiC probes as a function of probe geometry and then characterized the buckling behavior of these probes by measuring force–displacement responses during insertion into agarose gel and rat cortex. Main results. Insertion forces for a range of probe geometries were determined and compared with critical buckling forces to establish geometries that should avoid buckling during implantation into brain. The studies show that slower insertion speeds reduce the maximum insertion force for single-shank probes but increase cortical dimpling during insertion of multi-shank probes. Significance. Our results provide a guide for selecting probe geometries and insertion speeds that allow unaided implantation of probes into rat cortex. The design approach is applicable to other animal models where insertion of intracortical probes to a depth of 2 mm is required.
IV Smart NanoMaterials: Advances, Innovation and Applications (SNAIA) Hybrid Online – Onsite Conference
Authors: Baldycheva A. , Berseneva E. 
Published: March 2022

Abstract
École Nationale Supérieure de Chimie de Paris, ParisTech, France

7-10 December 2021

Smart nanomaterials are the basis of diverse emerging applications, including wearable and printed electronics, flexible optoelectronics, CMOS photonics, quantum computing, smart coatings and thin films. This collection focuses on the most recent scientific and technological advances, innovations and new practical applications of novel smart nanomaterials presented at the 4th Smart Nanomaterials Conference, SNAIA 2021. It covers topics ranging from advances in the most critical aspects in chemistry and material fabrication of nanomaterials, to the engineering of prototype devices and systems.
List of Scientific Committee, Organising Committee, Editorial Board, Plenary Speakers, Keynote Speakers and Invited Speakers are available in this pdf.
Novel Hybrid anapole state and non-Huygens’ transparent metasurfaces
Authors: Shalin A S , Kuznetsov A V , Bobrovs V , Canós Valero A 
Published: March 2022

Abstract
The purpose of this work is to study of the optical properties of metasurfaces consisting of cylindrical metaatoms in the recently discovered hybrid anapole state. With the help of such metasurfaces, it was possible to obtain completely invisible metasurfaces based on new principles that is an alternative branch of development to the already known Huygens’ metasurfaces. This research might be helpful for the development of modern ultra-compact photonic devices based on new effects.
Optical sensing of organic solvents vapor with lead halide perovskite nanowire lasers on one-dimensional polymer nanograting
Authors: Markina D.I. , Pushkarev A.P. , Makarov S.V. 
Published: March 2022

Abstract
Timely detection of organic solvent vapors at their low concentrations is an urgent problem of the chemical industry. Various optical applications attempt to solve it, facing the challenges of low sensitivity and costly high-tech production. This work presents the design of the sensitive optical detector based on the CsPbBr3 perovskite nanowire (NW) laser deposited on a polystyrene (PS) periodic structure responsive to organic solvent presence. Molecules of solvents are effectively absorbed by PS nanograting leading to the reshaping of the last. Enlargement of the PS nanograting acting as a substrate for CsPbBr3 nanolaser causes a change in the effective refractive index of the medium under perovskite cavity. High-quality lasing modes of the perovskite cavity respond to this change via undergoing the spectral shift. Numerical modeling reveals the sufficient redshift of 0.15 nm in response to the 5 nm increase of PS nanograting ridges. We show that the sensitivity of lasing mode depends on its order which strongly correlates with the field confinement. These results might be useful for further progress in perovskite-based optical gas sensing.
Characterization of optical and nonlinear properties of individual GaP nanowires using optical tweezers
Authors: Bolshakov Alexey D. , Shishkin Ivan , Machnev Andrey , Petrov Mikhail I. , Kirilenko Demid , Fedorov Vladimir V. , Mukhin Ivan S. , Ginzburg Pavel 
Published: March 2022

Abstract
Semiconductor nanowires (NWs) offer multiple advantages for designing novel optoelectronic devices, such as small footprint, high quantum efficiency, high nonlinear susceptibility. Gallium phosphide (GaP) is one of the attractive materials owing to its low optical absorption and high nonlinear susceptibility. However NWs should be transferred to planar substrates for optical studies, which do not allow efficient signal outcoupling. We demonstrate efficient second harmonic generation in individual GaP nanowires trapped using optical tweezers. Such vertically arranged configuration of NW allows to both efficiently generate second harmonic and to probe linear optical response using broadband light source. Such experiment allows to examine interplay between harmonic generation efficiency and NW dimensions.
Enhanced strong coupling of WSe2 monolayer by Bound State in the continuum
Authors: Al-Ani Ibrahim A. M. , As’Ham Khalil , Huang Lujun , Miroshnichenko Andrey E. , Hattori Haroldo T. 
Published: March 2022

Abstract
Due to the large binding energy and direct bandgap, transition-metal dichalcogenides (TMDCs) monolayers have been considered a perfect platform for realising strong coupling at room temperature. It is well established that the quality factor (Q-factor) plays a crucial role in enhancing strong coupling. In this work, we demonstrate the improved strong coupling between the exciton of the WSe2 monolayer and the high Q cavity resonance based on symmetry protected magnetic dipole (MD) bound state in the continuum (BIC). We have found that the Rabi-splitting of the strongly coupled system could be largely enhanced by adjusting the location of the TMDC monolayer, increasing the Q-factor, and reducing the grating thickness. After carefully adjusting the three critical parameters, a Rabi-splitting as high as 38 meV was achieved limited by the oscillator strength of the WSe2 monolayer. Our system could be considered an excellent platform to realise ultra-thin polaritonic devices.
A novel technique for an alignment-insensitive density calibration of Thomson scattering diagnostics developed at W7-X
Authors: Fuchert G. , Nelde P. , Pasch E. , Beurskens M.N.A. , Bozhenkov S.A. , Brunner K.J. , Meineke J. , Scott E.R. , Wolf R.C. 
Published: March 2022

Abstract
In most laboratory setups in plasma physics, including magnetic-confinement experiments for fusion research, laser-based Thomson scattering allows for absolutely calibrated density measurements without input from other diagnostics and with high spatial resolution. A common issue is the alignment stability of either the laser beam or the observation optics. Frequent recalibrations are typically required. This is a challenge in particular for larger fusion experiments; while beam paths tend to get longer, the access for alignment and calibration gets more restricted. Therefore, simple, fast and robust calibration methods are required. A novel calibration technique has been developed at W7-X to account for alignment variations in the calibration procedure. This will decrease the pulse-to-pulse variations significantly and allow for a longer time duration before a recalibration becomes necessary. By monitoring the beam position accurately, it could be shown that misalignment leads to deterministic and reproducible changes in the measured density. The introduced density errors can be corrected for by monitoring the laser beam for every individual laser pulse. In the last experimental campaign, this has been done retrospectively by introducing parallel shifts to the laser beam path in order to show the feasibility of this method. It could be demonstrated that the impact of introduced shifts on the electron density can be successfully corrected for. For future campaigns, the beam alignment will intentionally be varied during the absolute calibration in order to cover the full range of expected beam positions. During the actual experiments, the beam positions will be monitored likewise and each density profile will be evaluated with the most suitable calibration factor. While probably not needed for W7-X, vibrations of the observation optics could be included in the same way.
Investigation of a SiPM-GGAG:Ce,B scintillator detector for environmental gamma radiation monitoring
Authors: Srivastava S. , Mitra P. , Singh S.K. , Tyagi M. , Kumar A.V. , Topkar A. 
Published: March 2022

Abstract
A study of a silicon photomultiplier (SiPM) coupled with a
GGAG:Ce,B scintillator detector for environmental gamma radiation
monitoring is presented in this paper. FLUKA based Monte Carlo
simulations were carried out for the optimization of scintillator
material and geometry for this application. Based on the simulation
study, the dimensions of GGAG:Ce,B scintillator crystal were
finalized and the scintillator was prepared. The detector was
assembled by optically coupling to a commercially available
SiPM. The analog output pulses of the SiPM were amplified by a
voltage sensitive amplifier and subsequently counted using a
microcontroller. The linearity of the detector response with gamma
dose rate was verified using 137Cs standard gamma source. The
radiation response of the detector for different gamma energies was
investigated using standard 137Cs, 241Am and 60Co
sources. The variation of detector sensitivity with SiPM overvoltage
was measured for choosing an optimal overvoltage for the SiPM
operation. The experimentally observed response of the
SiPM-GGAG:Ce,B detector was very linear in the measurement range of
3.5–300 μGy/h with a sensitivity of
2.44 cps/μGy/h. The gamma response study of the detector
confirm the suitability of the developed detector for making a
compact and low power gamma monitor for environmental gamma
radiation monitoring network.
Evidence of horizontal urban heat advection in London using six years of data from a citizen weather station network
Authors: Brousse O , Simpson C , Walker N , Fenner D , Meier F , Taylor J , Heaviside C 
Published: March 2022

Abstract
Recent advances in citizen weather station (CWS) networks, with data accessible via crowd-sourcing, provide relevant climatic information to urban scientists and decision makers. In particular, CWS can provide long-term measurements of urban heat and valuable information on spatio-temporal heterogeneity related to horizontal heat advection. In this study, we make the first compilation of a quasi-climatologic dataset covering six years (2015–2020) of hourly near-surface air temperature measurements obtained via 1560 suitable CWS in a domain covering south-east England and Greater London. We investigated the spatio-temporal distribution of urban heat and the influences of local environments on climate, captured by CWS through the scope of Local Climate Zones (LCZ)—a land-use land-cover classification specifically designed for urban climate studies. We further calculate, for the first time, the amount of advected heat captured by CWS located in Greater London and the wider south east England region. We find that London is on average warmer by about 1.0 ∘C–1.5 ∘C than the rest of south-east England. Characteristics of the southern coastal climate are also captured in the analysis. We find that on average, urban heat advection (UHA) contributes to 0.22 ± 0.96 ∘C of the total urban heat in Greater London. Certain areas, mostly in the centre of London are deprived of urban heat through advection since heat is transferred more to downwind suburban areas. UHA can positively contribute to urban heat by up to 1.57 ∘C, on average and negatively by down to −1.21 ∘C. Our results also show an important degree of inter- and intra-LCZ variability in UHA, calling for more research in the future. Nevertheless, we already find that UHA can impact green areas and reduce their cooling benefit. Such outcomes show the added value of CWS when considering future urban design.
Utilization of ceramic waste powder and rice husk ash as a partial replacement of cement in concrete
Authors: Nalli Bhaskara Rao , Vysyaraju Prudhviraju 
Published: March 2022

Abstract
Ceramic waste powder (CWP) and rice husk ash (RHA) are one of the highly produced waste materials from tiles industry and rice processing units respectively. Using these materials in concrete as a part replacement for cement offers several advantages like reducing the burden on landfills, reducing the construction cost by replacing costly cement and improvement in performance of concrete etc. due to their mineral composition. In the current study, an effort was made to partly replace the cement with CWP and RHA. Concrete design mix was carried out by using 0, 5, 10, 15 and 20% CWP and varied proportions of RHA were tried on the optimum CWP for cement replacement (0, 5, 10, 15, 20%). Tests were carried out on the fresh and hardened concrete specimens to study the mechanical properties of concrete. Analysis of the test results indicate that 15% CWP yielded best results and 10-15% RHA in combine proportion was found to be the optimum replacement of cement offering higher strength when assessed to the conventional concrete. Maximum compressive strength achieved at 15% CWP and 15% RHA whereas, the flexural strength and split tensile strength were attained at 15% CWP and 10% RHA dosage.
Sustainable concrete pavements for low volume roads-Scientometric analysis of the literature
Authors: Siva Rama Krishna U , Tadi Chiranjeevi 
Published: March 2022

Abstract
Developing countries like India invest huge amounts of money for the construction and maintenance of different roads which includes all types of roads. In this research paper a critical review of literature on sustainable pavements for low volume roads was made using sustainable materials for paving Ultra-thin white topping concrete overlays sustainable new pavements like Pervious concrete pavements, Roller compacted concrete pavements, Cell filled concrete pavements, Self-Compacting Concrete (SCC) Pavement and additional discussion on energy harvesting pavements done. Ultra-thin white topping concrete overlay has better-proven performance but interface bond strength is very critical to resist shear stresses which cause debonding of composite concrete layers. The porous cement or bituminous concrete helps to recharge the groundwater reducing the heat islands and makes nature eco-friendly but on the other hand clogging effect can retain the water in the pavement and causes failure of the pavement. Roller compacted concrete pavement, Self-Compacting Concrete (SCC) Pavement and cell-filled concrete pavements are good in terms of performance disadvantages are less. The Indian standard code should be developed to implement energy harvesting pavements that help to produce electrical energy which meets the need of society. Further Scientometric analysis of sustainable concrete pavements for low volume roads done using VOS viewer software and the database of research work from Dimensions software. From the research gap in keyword occurrences on this topic, it is observed that rice husk ash, recycled aggregate, aluminum dross and fatigue, modulus of elasticity has a wide gap indicating further research on the combination of these key words make sustainable concrete pavements further discussed regarding high impact research papers published, similarly countries were discussed in detail.
Experimental study on self-compacting concrete with replacement of coarse aggregate by light expanded clay aggregate
Authors: Vaishnava Kumar R. , Tejaswini N. , Madhavi Y. , Chari Kanneganti Jyothishya Brahma 
Published: March 2022

Abstract
The present study deals with fresh and hardened concrete properties of self-compacting concrete while carrying several trial mixes with a variety of water binder ratio and super-plasticizer content and finally achieved a trail mix with satisfying the flow properties as slump flow, V-funnel, and L-box test apparatus values are obtained within the limits of European guidelines. This study was carried out on the properties of Lightweight self-compacting concrete (LWSCC) with a binder content of 517 Kg/m3. In the achieved proportion of the final trail mix, the coarse aggregate will be replaced by Light Expanded Clay Aggregate (LECA) by varying the different percentages of coarse aggregate as 0%, 10%, 20%, 30%, 40%, and 50% by volume replacement. The fresh concrete properties are determined, and the values were found in considerable range as per European guidelines by performing slump flow, V-funnel, and L-Box tests for various proportions (0%, 10%, 20%, 30%, 40%, and 50%) of LECA aggregates by replacing normal coarse aggregates. The hardened concrete properties are determined by performing Compressive strength, split tensile strength, ultrasonic pulse velocity, and rebound hammer tests after curing specimens for 7 days and 28 days. Results indicate that LECA replacement in SCC up to 30% gives fair results in split tensile & compressive strength. NDT results show values are gradually decreasing with an increase in LECA proportion. Beyond 30% of LECA replacement in SCC gives results of split tensile, compressive strength, ultrasonic pulse velocity, and rebound hammer tests which are not inconsiderable range.
Laboratory investigations on properties of Nanosilica Pervious concrete
Authors: Tarangini D , Sravana P , Srinivasa Rao P 
Published: March 2022

Abstract
Porous concrete also called as no fines concrete has become more and acceptable construction and low-traffic road applications. It can be used to prevent flooding in parking lots and pavements, as well as with other materials. The resilience of porous pavement surface is the major issue. Physical properties, cement matrix, particle distribution, binder ratio, admixtures, and water absorption are all important factors. The current research focuses on the compressive, tensile splitting, and flexure strengths of porous concrete with a total aggregate to cement(TA/C) ratio of 3.5:1 and a w/b ratio of 0.34 and 0.30. The test findings reveal that the inclusion of Nano silica has a considerable impact on possessions of porous mix of concrete. The maximum strength in compression achieved was over 40Mpa. Tensile strength ranges between 2.02 MPa to 3.99 MPa. The coefficient of permeability also ranges from 3.24 to 5.65 mm/s. The R2 value for 28,90 and 180 day age of pervious concrete mix is 0.9176, 0.8651 and 0.838 respectively. For higher compressive strength, water permeability was shown to be compromised.
Evaluation of Strength Properties of the Concrete Prepared from Class F Fly Ash
Authors: Kanta Rao M , Ch Naga Satish Kumar 
Published: March 2022

Abstract
Cement is a hazardous and expensive material that is used in the production of concrete, where the cost of the concrete is minimized by replacing the cement with similar cementitious materials. According to the report of the national thermal power corporation, the production of fly ash is rising each year as a result of increasing demand for electricity. In this research paper, an attempt has been done by replacing cement with fly ash as an alternative material. The concrete samples are prepared with different compositions by using different percentages (0%, 10%, 20%, 30%, 40%, 50%, and 60%) of fly ash. In this research, the behaviour of the fly ash concrete is investigated by different strength-related properties; compressive strength, splitting tensile strength, and flexural strength at various curing time periods of 7, 28, 56, 90, and 180 days. In the experimental section, the developed fly ash concrete obtained maximum compressive strength of 83.50N / mm
2, a flexural strength of 6.60N / mm
2 and a splitting tensile strength of 4.90N / mm
2 on the 180th day in the composition of 450kg/m
3 and 0.4W/B ratio. Percentage gain of compressive, split tensile and flexural tests for 450 kg/m3 at 0.4 W/B ratio at 180 days curing is 13%, 9% and 13% with 30% fly ash replacement when compared to 350 kg/m3 binder content. Proportional increase of cement content also leads to increase fly ash content in concrete. Fly ash has potential of filling pores because of having finer particles and performs pozzolanic action which resulted in attaining high strength even after optimum replacement when compared to conventional concrete.