bluuebunny/crossref_metadata_2025 huggingface dataset:
Supramolecularly cross-linked nanoassemblies of self-immolative polyurethane from recycled plastic waste: high encapsulation stability and the triggered release of guest molecules
Authors: Santra Subrata , Kolay Soumya , Sk Sujauddin , Ghosh Debleena , Mishra Anmol , Roy Lisa , Sarkar Kishor , Molla Mijanur Rahaman
Published: May 2022

Recycled plastic waste based self-immolative polyurethane has been synthesized and nanoformulated for tumor relevant pH induced charge modulation, efficient guest encapsulation and triggered release in a controlled fashion.
Cr3+-Doped InTaO4 phosphor for multi-mode temperature sensing with high sensitivity in a physiological temperature range
Authors: Qiu Liting , Wang Peng , Mao Jiashan , Liao Zhicheng , Chi Fengfeng , Chen Yonghu , Wei Xiantao , Yin Min
Published: May 2022

Temperature imaging was successfully realized on a microelectronic printed circuit board by adopting the temperature sensing scheme based on the temperature dependence of the ratio of fluorescence intensities in two-time windows.
Coupling BODIPY with nitrogen-doped graphene quantum dots to address the water solubility of photosensitizers
Authors: Jénnifer Gómez I. , Russo Marina , Arcidiacono Orazio Angelo , Sánchez-Carnerero Esther M. , Klán Petr , Zajíčková Lenka
Published: May 2022

Water-soluble photosensitizers based on covalently grafted nitrogen-doped graphene quantum dot–BODIPY for cellular imaging and photodynamic therapy.
BF3-promoted reactions of α-amino acetals with alkynes to 2,5-disubstituted pyrroles
Authors: Gao Zhi-Yuan , He Yu , Li Lan-Yang , Tian Jie-Sheng , Loh Teck-Peng
Published: May 2022

An efficient BF3-promoted cyclization of α-amino acetals with alkynes for the assembly of substituted pyrroles has been developed. This cascade process can be easily achieved through a simple metal-free operation under mild conditions.
Visible-light-mediated defluorinative cyclization of α-fluoro-β-enamino esters catalyzed by 4-CzIPN
Authors: Song Yi-Fan , Niu Xiaoying , Zhao Jincan , Shen Shigang , Yang Xiu-Long
Published: May 2022

Using 4-CzIPN as an energy transfer (EnT) photocatalyst and α-fluoro-β-enamino esters as substrates, a mild 6π-photocyclization/defluorination of N-aryl enamines was carried out to efficiently construct indoles under visible light irradiation.
Rational design of large flat nitrogen-doped graphene oxide quantum dots with green-luminescence suitable for biomedical applications
Authors: Nazarkovsky Michael , Mikhraliieva Albina , Achete Carlos A. , Alves Luiz Anastacio , Araujo Joyce , Archanjo Bráulio S. , Barros José Júnior França de , Cardoso Liana Monteiro da Fonseca , Couceiro José Nelson S. S. , Marques Fernanda Davi , Oliveira Bruno S. , Souza Rafael Nascimento Dias de , Teixeira Ayla Josma , Vasconcelos Thiago L. , Zaitsev Vladimir
Published: May 2022

This paper reveals the methodology for robust preparation of purified nitrogen-doped graphene oxide quantum dots with non-cytotoxic activity against monkey epithelial kidney cells (Vero ATCC® CCL-81™).
Micellization and thermodynamics study of ester functionalized picoline-based ionic liquid surfactants in water
Authors: Fu Dong , Gao Xiaoru , Wang Jue , Jiang Haijian , Zheng Mingming , Li Peng , Huang Bo , Kan Kan , Zhang Xiaochen
Published: May 2022

The aggregation behavior of N-alkyoxycarbonyl-3-methyl pyridinium bromides [CnEmpy][Br] in water was extended to the investigation of the effect of ester functionalized chain length on the thermodynamics of micellization in a wide temperature range.
Evolution of morphology and cohesive force of hydrate particles in the presence/absence of wax
Authors: Liu Yang , Wu Chengxuan , Lv Xiaofang , Xu Xinyi , Ma Qianli , Meng Jiawei , Zhou Shidong , Shi Bohui , Song Shangfei , Gong Jing
Published: May 2022

In the exploitation of deep-sea oil and gas resources, the multiphase production and transportation process is frequently plagued by pipeline blockage issues.
Tantalum, easy as Pi: understanding differences in metal–imido bonding towards improving Ta/Nb separations
Authors: Weberg Alexander B. , Chaudhuri Subhajyoti , Cheisson Thibault , Uruburo Christian , Lapsheva Ekaterina , Pandey Pragati , Gau Michael R. , Carroll Patrick J. , Schatz George C. , Schelter Eric J.
Published: May 2022

A selective separation of the critical metals tantalum and niobium was accomplished from π-bonding-based reactivity differences of imido complexes. New insights into Ta/Nb separations were gained through detailed kinetic and computational studies.
Soft particles facilitate flow of rigid particles in a 2D hopper
Authors: Alborzi Saeed , Clark Benjamin G. , Hashmi Sara M.
Published: May 2022

We mix soft hydrogel beads with rigid polypropylene spheres and investigate, both experimentally and numerically, the clogging probability in a 2D hopper, under varying mixing fractions and particle diameters.
Multi-functional modification of nickel-rich lithium cathode materials using Na2PO3F
Authors: Wu Fangting , Zhou Dong , Zhang Lihan , Bin Wenjie , Gao Ziyao , Deng Xianming , Ruan Lingyan , Zhao Chenglong , Kang Feiyu , Li Baohua
Published: May 2022

A modification method involving a co-doping coating formed by Na2PO3F can not only reduce the surface side reaction of NCM but also alleviate the microstructural defects in crystal. Consequently, this strategy has excellent prospects in LIBs.
Practical Zn anodes enabled by a Ti-MOF-derived coating for aqueous batteries
Authors: Xu Qiuju , Zhou Wencai , Xin Tuo , Zheng Zilong , Yuan Xiangcheng , Liu Jinzhang
Published: May 2022

A Ti-MOF-derived nanocomposite is synthesized to form coatings on Zn anodes for mitigating dendrite growth and hydrogen gas evolution. With the protection of this coating, the cycle life of Zn anodes is remarkably prolonged.
Enhanced performances of lithium metal batteries by synergistic effect of low concentration bisalt electrolyte
Authors: Pham Thuy Duong , Bin Faheem Abdullah , Nguyen Hieu Dinh , Oh Hye Min , Lee Kyung-Koo
Published: May 2022

A low concentration bisalt electrolyte that provides robust and conductive solid/cathode electrolyte interphase layers in lithium metal batteries.
Interfacial passivation with 4-chlorobenzene sulfonyl chloride for stable and efficient planar perovskite solar cells
Authors: Shini Foo , Thambidurai M. , Dewi Herlina Arianita , Jamaludin Nur Fadilah , Bruno Annalisa , Kanwat Anil , Mathews Nripan , Dang Cuong , Nguyen Hung D.
Published: May 2022

A 4-chlorobenzene sulfonyl chloride (CBSC) passivated perovskite solar cell device shows a high-power conversion efficiency (PCE) of 20.02% with improved long-term stability.
Deep-blue emission and thermally activated delayed fluorescence via Dimroth rearrangement of tris(triazolo)triazines
Authors: Hojo Ryoga , Mayder Don M. , Hudson Zachary M.
Published: May 2022

Three luminescent donor–acceptor compounds were prepared based on the Dimroth rearrangement of tris(triazolo)triazines (TTT).
Taking a LEAF out of the green lab book
Authors: Houghton Charlotte , Saurya Saroj , Foster Benjamin
Published: May 2022

Do you want to make your research more efficient and reliable? Have you wondered whether science could be environmentally sustainable and what you can do to help bring this about?
A Systematic Review and Meta-Analysis Exploring Effects of Third-Wave Psychological Therapies on Hearing-Related Distress, Depression, Anxiety, and Quality of Life in People With Audiological Problems
Authors: Wang Belinda , Gould Rebecca L. , Kumar Pavithra , Pikett Liam , Thompson Benjamin , Gonzalez Sergi Costafreda , Bamiou Doris-Eva
Published: May 2022

Purpose:

There is growing evidence supporting the use of third-wave psychological therapies, such as mindfulness-based interventions (MBIs) and acceptance and commitment therapy (ACT), for people with long-term or chronic physical health conditions. We conducted a systematic review and meta-analysis to critically evaluate the effectiveness of third-wave interventions for improving hearing-related distress and psychological well-being in people with audiological problems.

Method:

We searched online bibliographic databases and assessed study quality. We conducted random-effects meta-analyses if at least two randomized controlled trials (RCTs) examined hearing-related distress, depression, anxiety, or quality of life in people with audiological problems. Findings of pre–post studies were summarized narratively.

Results:

We identified 15 studies: six RCTs and nine pre–post studies. The methodological quality of studies was mostly poor to moderate, and sample sizes were typically small (overall
n
= 750). Most studies focused on tinnitus (
n
= 12), MBIs (
n
= 8), and ACT (
n
= 6). Statistically significant improvements in hearing-related distress were found with ACT and MBIs versus controls and other treatments at post-intervention in people with tinnitus, while improvements in depression and anxiety were only found for ACT versus controls at post-intervention. However, gains were either not maintained or not examined at follow-up, and there was no evidence for improvements in quality of life.

Conclusions:

At present, there is insufficient evidence to recommend the use of third-wave interventions for improving hearing-related distress or psychological well-being in people with audiological problems. There is some evidence that ACT and MBIs may be useful in addressing hearing-related distress in people with tinnitus, but only in the short term. However, findings should be interpreted with caution given the small number of studies with generally small sample sizes and mostly poor-to-moderate methodological quality. More high-quality, adequately powered, double-blind RCTs, particularly in audiological problems other than tinnitus, are needed to draw firm conclusions and meaningful clinical recommendations.

Supplemental Material:

https://doi.org/10.23641/asha.19735975
Subsidy and pricing strategies of an agri-food supply chain considering the application of Big Data and blockchain
Authors: Liu Pan , Zhang Ziran , Dong Fen-Yi
Published: May 2022

Based on the advantages of Big Data and blockchain in food traceability area and information sharing area, it has attracted widespread attentions. However, it is not so popular in agricultural field, a vital reason is the scarcity of effective incentives. Government incentive as an important incentive measure is thought to be useful. To study the subsidy rules in the new background, we chose an agri-food supply chain with one producer and one retailer as research object and divided government incentive into direct incentive and indirect incentive. Then, considering the changes of consumer perceived safety on agri-food in the new environment, the demand function was revised. Furthermore, we proposed and analyzed three subsidy models and their benefit functions considering the information service inputs based on Big Data and blockchain (BBIS). Findings: (1) The subsidy models will not change the variation tendency of prices and benefits with the BBIS optimization coefficient, the BBIS investment costs from the producer and the retailer, the ascension of the unreliability coefficient of quality safety and the agri-food quality level. (2) When the subsidy coefficients about direct and indirect subsidies can meet a relationship, benefits of chain members in the indirect subsidy model are higher than them in the direct subsidy model. Findings offer a theoretical guidance for government departments to make and implement the subsidy strategies. In addition, for company, it can provide a theoretical guidance on setting pricing strategies in the new technology background.
Joint replenishment strategy for deteriorating multi-item through multi-echelon supply chain model with imperfect production under imprecise and inflationary environment
Authors: Singh Padiyar Surendra Vikram , Vandana  , Bhagat Naveen , Singh Shiv Raj , Sarkar Biswajit
Published: May 2022

As the industry environment becomes more competitive, the supply chain management for multi items has become an essential part of the industries. In this paper, a multi-echelon inventory model for deteriorating multi items with imperfect production has been developed under the environment of fuzzy and inflation. A single producer, multi-supplier, and multi-retailer are considered from the integrated point of view. Here, the producer only produces the retailer’s need to have a tremendous advantage and minimum loss. It is observed that the inflation rate is almost uncertain for deteriorating goods in every supply chain. In this paper, the inflation rate is taken as a triangular fuzzy number, and the centroid method is used to defuzzify the profit function. The shortage is not allowed in any part, an imperfect production process is considered, but it is not reworkable in this supply chain. Different inflation rates are considered for additional items because inflation has strained the most vulnerable consumers (the daily wage earners), who mainly demand goods in short and small quantities. This entire model is developed based on the retailer’s demand and due to which, the profit potential is maximized. The central premise of this study is to get maximum benefit by creating a production model for deterioration items. Finally, a numerical example and sensitivity analysis illustrate the present study. It is observed that if the number of shipments taken from the supplier increases during the production period, the total profit increases in crisp and fuzzy. If a positive change occurs in the number of shipments received through the producer to the retailer, then the fuzzy model has positive, but a slight negative change occurs in the crisp model. This paper shows the effect of a joint replenishment policy for multi-item compared with the independent approaches.
Schwere hämolytische Krankheit beim Fetus und Neugeborenen mit ungewöhnlich hohem Anti-D-Titer und prolongiertem Anämieverlauf
Authors: Ackerstaff Stefanie , Wolf Zsuzsanna , De Rop Christiane , Holzhäuer Inci , Fischer Johannes
Published: May 2022

Wir berichten über 2 Patienten mit schwerer hämolytischer Krankheit beim Fetus und Neugeborenen. Beide Mütter wiesen neben Anti-D-Antikörpern mit ungewöhnlich hohen Titern (Patientin 1:
1 048 576, Patientin 2: 16 384) weitere Allo-Antikörper auf und sie erhielten intrauterine Transfusionen im Rahmen ihrer Schwangerschaften. Kind 1 zeigte nach Geburt in der
Schwangerschaftswoche 32 + 1 einen Apgar-Score von 6 – 8 – 9 und einen Hämoglobin-Wert (Hb-Wert) von 11,7 g/dl, das Bilirubin lag in den ersten 3 Tagen bei maximal 9,2 mg/dl. Der
Anti-D-Titer lag nach Geburt bei 65 536 und fiel postnatal langsam ab (512 an Tag 80; 1 an Tag 140). Bei Kind 2 wurde nach Geburt in der Schwangerschaftswoche 35 + 2 ein Apgar-Score von
8 – 9 – 10 gemessen. Der Hb-Wert lag bei 13,7 g/dl und das Bilirubin stieg in den ersten Lebenstagen auf ein Maximum von 11,46 g/dl. Der kindliche Anti-D-Titer lag bei 1024. Die
Hyperbilirubinämie konnte in beiden Fällen mittels Phototherapie gut beherrscht werden und die Kinder wurden nach 4 bzw. 2 Wochen in gutem Allgemeinzustand entlassen. Allerdings zeigte sich
postnatal eine prolongierte hyporegenerative Anämie, sodass über 3 Monate (Kind 1) bzw. 1,5 Monate (Kind 2) weitere Transfusionen notwendig waren. Zwei Mechanismen werden als Ursache einer
prolongierten postnatalen Anämie diskutiert: Zum einen können persistierende Anti-D-Antikörper und intrauterine Transfusionen zu einer Verminderung der Erythropoese führen. Hiervon zu
unterscheiden ist eine späte hämolytische Anämie mit regenerierendem Knochenmark bei anhaltender immunhämatologischer Hämolyse. Diese Fälle zeigen, dass eine hyporegenerative Anämie über
Wochen nach Geburt andauern kann und die Kinder sorgfältig im Hinblick auf eine anhaltende Anämie beobachtet werden sollten. Neben der Bestimmung des Hb-Wertes sind auch die Bestimmung der
Retikulozytenzahl und des Anti-D-Titers indiziert, um den weiteren Verlauf und eine mögliche Regeneration des Knochenmarks vorherzusagen.
Fallbericht zur Bergung von Katheteranteilen beim Radiofrequenz-Verfahren bei technischem Defekt
Authors: Scholl Sarah , Leitz Nicolas
Published: May 2022

Endoluminale Therapien wie das Venefit-Verfahren gehören zur Standardtherapie der chronisch-venösen Insuffizienz 1. Technische Defekte eines Katheters sind möglich, ein in vivo angewendeter defekter Katheter wurde jedoch bisher nicht beschrieben. Wir berichten über die Bergung einer Katheterspitze nach Verbleib im Patienten durch einen technischen Defekt beim Venefit-Verfahren. Die 60-jährige Patientin wurde ambulant mittels endoluminaler Therapie behandelt. Während des Eingriffs kam es zu technischen Problemen mit Abriss des Katheters und Verbleib von Heizsegment und Anteilen des Katheterdrahts in der Patientin. Es erfolgte eine Bergung der verbliebenen Kathetheranteile.
Poststenotic Distal Caliber Reduction Predicts Very High-Grade Proximal Internal Carotid Artery Stenosis
Authors: von Reutern Gerhard Michael , Perren Fabienne , Alpsoy Ilona , Allendörfer Jens
Published: May 2022

Background Angiography relates the residual lumen to the poststenotic distal lumen (NASCET criterion) and expresses the result in percent lumen reduction. This method is not applicable when there is a collapse of the distal lumen, as seen in severe stenosis. The purpose of this study was to evaluate whether the reduced poststenotic caliber could be an additional sonographic criterion for estimation of the degree of stenosis.

Methods We measured the caliber of the distal lumen of the extracranial internal carotid artery (ICA) in 57 patients with low-grade stenosis <50% (NASCET criterion), and in 57 patients with unilateral stenosis of ≥ 50 %. All were classified following international recommendations. The criteria used included the poststenotic velocity to discriminate moderate to high-grade stenosis (50–70%) from very high-grade (≥ 80 %) stenosis. In addition, we measured the interrater reliability of the ultrasonic measurement of the lumen in the distal ICA.

Results In the group of patients with 50% to 70% stenosis, the distal lumen was 4.3 ± 0.6 mm. In the group with very high-grade stenosis ≥ 80%, the distal lumen was 2.6±0.5mm (p<0.0001). A distal lumen of 3.2 mm or less predicted a very high-grade stenosis with a sensitivity of 0.92 and a specificity of 0.96 (AUC 0.986; 95% CI 0.97–1.00; p=0.0001).

Conclusion The distal poststenotic lumen is an additional ultrasonic criterion to discriminate a very high-grade ICA stenosis from a lesser degree of ICA stenosis. It can help avoid misinterpretation due to the high variability of intrastenotic peak systolic velocities (PSV) in very high-grade ICA stenoses.
Choanal Polyps Originating from Unusual Sites: A Rural Tertiary Care Center Experience
Authors: Joseph Lini , Prasad K. C. , Babu Prashanth , Harshitha N.
Published: May 2022

Introduction Choanal polyps are benign lesions arising from the sinonasal mucosa, extending through the choana into the nasopharynx. Though polyps arising from the maxillary sinus and extending to the choana are common, polyps arising from the sphenoid sinus ostium, posterior part of middle turbinate, and inferior and middle meatus are quite uncommon.

Objective To document the site of origin of choanal polyps arising from unusual sites; their clinical, radiological, and histopathological characteristics, as well as diagnostic challenges and management.

Methods This retrospective, single-center study included 14 patients aged 16 to 75-years-old with choanal polyps. After obtaining informed consent, their clinical, radiological and surgical details and histopathology reports were reviewed. Patients were followed for at least 6 months after surgery.

Results The predominant symptoms were unilateral nasal obstruction (n = 9), snoring, rhinorrhea, and epistaxis. Though anterior rhinoscopy was unremarkable, a mass could be visualized during posterior rhinoscopy in the nasopharynx in 11 patients, and a mass could be directly visualized in the oropharynx in 2 patients. After diagnostic by nasal endoscopy, these polyps were noted to arise from the posterior aspect of the middle meatus (n = 6), middle turbinate (n = 3), posterior septum (n = 3), sphenoid sinus ostium (n = 1), and inferior meatus (n = 1). All patients were managed surgically. The histopathological examination revealed inflammatory polyp (n = 12), actinomycosis (n = 1), and rhinosporidiosis (n = 1). Patients were followed up for 6 to 22 months. We observed no complications or recurrence.

Conclusion Diagnostic nasal endoscopy should be performed in all patients presenting with nasal obstruction, to rule out choanal polyps arising from unusual sites. Complete polyp removal and appropriate treatment based on histopathology prevents recurrence.
Using network analyses to examine the extent to which and in what ways psychology is multidisciplinary
Authors: Fujita Yoshiaki , Vitevitch Michael S.
Published: May 2022

The emerging field known as the “science of science” uses a variety of quantitative techniques to (among other things) understand how a specific field changes over time. The tools of network science were used to quantify the extent to which Psychology is multidisciplinary, and how the extent to which it is multidisciplinary changed over time. Citation networks were created from all of the articles published in journals identified by the Web of Science as Multidisciplinary-Psychology for each year from 2008 to 2018. Nodes in the networks represented Multidisciplinary-Psychology journals, and connections were placed to other journals (i.e., nodes) that were cited in the Multidisciplinary-Psychology articles for each year. The citation networks showed that about 25% of the citations were to other Multidisciplinary-Psychology journals, about 50% of the citations were to Psychology journals in other sub-fields, and about 25% of the citations were to journals in other disciplines. This distribution of citations remained fairly consistent across the years examined. To identify the ways in which Psychology is multidisciplinary, clusters of nodes (known as modules) in each citation network were detected to identify possible research themes that were examined further with co-word networks made from the author-provided keywords in each of the Multidisciplinary-Psychology articles that appeared in each Module. Some research topics persisted in the years examined, whereas other topics were more transient. Given that multidisciplinary research did not increase over time but instead changed in areas of research focus, ways for academic and research administrators to foster and continually renew multidisciplinary research are discussed. The discussion also describes how individual researchers might use the techniques here to identify areas of research that are less commonly explored and may prove to be fruitful areas to shift their research focus. The same techniques can be used to provide insight in to other disciplines in the Humanities and Social Sciences.
Real-space observation of non-collinear spin structure in centrosymmetric TbGa rare-earth magnet
Authors: Gao Yang , Zheng Xinqi , Li Zhuolin , Xu Jiawang , Qi Jie , Guo Yaqin , Hu Chaoqun , Qin Weidu , He Congli , Shen Shipeng , Wei Hongxiang , Zhang Ying , Wang Shouguo
Published: May 2022

The exploration of non-collinear spin texture in the f-electron-based rare-earth magnets has attracted fascinating interest for its fundamental physics and potential spintronic applications. Here, the real-space observation of nanometric helical spin order with the period down to 20 nm in centrosymmetric TbGa magnets was presented by Lorentz transmission electron microscopy. It was found that the helical period and the initial temperature for the appearance of the periodic helix can be tuned by the thickness of single-crystal TbGa plates (71–169 nm). Furthermore, the domain evolution under the perpendicular magnetic fields and with the shape constriction reveals the high stability of the stripe domains.
Demonstration and modeling of time-bin entangled photons from a quantum dot in a nanowire
Authors: Aumann Philipp , Prilmüller Maximilian , Kappe Florian , Ostermann Laurin , Dalacu Dan , Poole Philip J. , Ritsch Helmut , Lechner Wolfgang , Weihs Gregor
Published: May 2022

Resonant excitation of the biexciton state in an InAsP quantum dot by a phase-coherent pair of picosecond pulses allows preparing time-bin entangled pairs of photons via the biexciton–exciton cascade. We show that this scheme can be implemented for a dot embedded in an InP nanowire. The underlying physical mechanisms can be represented and quantitatively analyzed by an effective three-level open system master equation. Simulation parameters including decay and intensity dependent dephasing rates are extracted from experimental data, which in turn let us predict the resulting entanglement and optimal operating conditions.
Machined phononic crystals to block high-order Lamb waves and crosstalk in through-metal ultrasonic communication systems
Authors: Sugino Christopher , Gerbe Romain , Baca Ehren , Reinke Charles , Ruzzene Massimo , Erturk Alper , El-kady Ihab
Published: May 2022

For systems that require complete metallic enclosures (e.g., containment buildings for nuclear reactors), it is impossible to access interior sensors and equipment using standard electromagnetic techniques. A viable way to communicate and supply power through metallic barriers is the use of elastic waves and ultrasonic transducers, introducing several design challenges that must be addressed. Specifically, the use of multiple communication channels on the same enclosure introduces an additional mechanism for signal crosstalk between channels: guided waves propagating in the barrier between channels. This work numerically and experimentally investigates a machined phononic crystal to block MHz Lamb wave propagation between ultrasonic communication channels, greatly reducing wave propagation and the resulting crosstalk voltage. Blind grooves are machined into one or both sides of a metallic barrier to introduce a periodic unit cell, greatly altering the guided wave dispersion in the barrier. Numerical simulations are used to determine a set of groove geometries for testing, and experiments were performed to characterize the wave-blocking performance of each design. The best-performing design was tested using piezoelectric transducers bonded to the barrier, showing a 14.4 dB reduction in crosstalk voltage. The proposed periodic grooving method is a promising technique for completely isolating ultrasonic power/data transfer systems operating in a narrow frequency range.
Estimating thin-film thermal conductivity by optical pump thermoreflectance imaging and finite element analysis
Authors: Alajlouni Sami , Lara Ramos David Alberto , Maize Kerry , Pérez Nicolás , Nielsch Kornelius , Schierning Gabi , Shakouri Ali
Published: May 2022

We introduce a noncontact experiment method to estimate thermal conductivity of nanoscale thin films by fitting high spatial resolution thermoreflectance images of surface spot heating to a finite element simulated temperature distribution. The thin-film top surface is heated by a 1μm diameter focused, 825 nm wavelength laser spot. The surface temperature distribution in the excited sample is imaged by thermoreflectance microscopy with submicrometer spatial resolution and up to 10 mK temperature resolution. Thin-film thermal conductivity is extracted by fitting a measured surface temperature distribution to a 3D finite element temperature model. The method is demonstrated by estimating thermal conductivity for an isotropic thin-film metal (nickel, 60–260 nm) on a glass substrate. The fitted Ni thermal conductivity was 50 ± 5 W/m K, which is in good agreement with the literature. Also, we present a detailed finite element analysis for an anisotropic thin-film semiconductor sample to show how the method could be extended to estimate thermal conductivity of anisotropic thin films. Advantages of the new method are easy sample preparation (no top surface transducer film or integrated heater required), rapid in situ measurement, and application to a broad range of thin-film materials.
Envelope modulated x-ray grating interferometry
Authors: Pandeshwar Amogha , Kagias Matias , Shi Zhitian , Stampanoni Marco
Published: May 2022

X-ray dark-field and phase contrast imaging using grating interferometry (GI) have demonstrated great potential for medical and industrial applications. GI relies on the fabrication of high-quality absorption gratings, which has revealed to be quite challenging. This paper proposes an interferometer for dark-field and differential phase contrast imaging using a single phase-shifting element. This proposal simplifies the setup without penalizing the image quality. The proposed interferometer consists of a single dual-period phase grating having two distinct periods, which generates intensity modulation with a period large enough to be resolved directly by the detector. This makes the proposed GI system easily adaptable as there are no stringent alignment requirements. We show the utility of this method for a possible diagnostic task by imaging smoked murine lung samples. The simplicity of the proposed setup compared to a conventional Talbot(-Lau) interferometer suggests that it could be easily and widely used for a variety of applications.
Scattering-induced positive unsaturated linear magnetoresistance in LaAlO3/SrTiO3 two-dimensional electron gas system
Authors: Li Yu , Zheng Dongxing , Wang Ping , Liu Jiaqi , Jin Chao , Bai Haili
Published: May 2022

In this paper, positive and unsaturated linear magnetoresistance (LMR) in an LaAlO3/SrTiO3 two-dimensional electron gas system is reported. LMR appears in this system over a wide range of temperatures and magnetic fields and does not tend to saturate at magnetic field up to 14 T. The spatial fluctuation in mobility is the most likely origin of positive unsaturated LMR because the existence of strong Shubnikov-de Haas oscillations rules out the extreme quantum origin. Moreover, LMR ∝ μ and HC ∝ 1/μ are confirmed and meet the requirements of Δμ/μ < 1 in the classical model proposed by Parish and Littlewood. This suggests that the observed LMR is the classical LMR effect induced by a narrow mobility distribution. These findings are of great interest for the practical application of magnetoresistive devices such as magnetic sensors, magnetometers, and magnetic storage devices.
Nonlinear Hall effect in topological insulator Bi2Te3 with hexagonal warping
Authors: Yar Abdullah , Jasra  , Sabeeh Kashif
Published: May 2022

A new addition to the family of Hall effects is the nonlinear Hall effect. We investigate the role of hexagonal warping of the band structure of surface Dirac fermions in the nonlinear Hall effect in 3D topological insulators. Most relevant to our study is Bi2Te3, where we show that its surface states exhibit pronounced nonlinear Hall effect in the presence of warping. We investigate this nonlinear Hall effect as a function of Fermi energy, bandgap, warping strength, and temperature.
Acoustic super-resolution imaging based on solid immersion 3D Maxwell's fish-eye lens
Authors: Hu Chuanjie , Xue Shuwen , Yin Yuhang , Hao Zhanlei , Zhou Yangyang , Chen Huanyang
Published: May 2022

Acoustic waves have been widely applied in communications, medical treatment, military, and other aspects. In this Letter, we explore acoustic imaging properties of three-dimensional Maxwell's fish-eye lens (3D-MFEL) with elevated refractive index profile, the analytical and numerical results show that a 3D-MFEL based on solid immersion mechanism can achieve super-resolution imaging without chromatic aberration. In addition, introducing vortex waves into the 3D-MFEL, we further explore the super-resolution imaging properties in reconstructing vortex waves. The valid combination of 3D-MFEL and solid immersion mechanism provides a meaningful way for super-resolution imaging, which also paves a way forward for future designing and manufacturing in acoustic super-imaging systems.
Implementing patient-reported outcomes into routine care: an audit of cancer patients from two local health districts in New South Wales to understand their capabilities and preferences
Authors: Bamgboje-Ayodele Adeola , Arnold Belinda , Durcinoska Ivana , Avery Sandra , Vinod Shalini , Rincones Orlando , Thomas Tien , Descallar Joseph , Smith Ben , Delaney Geoff P , Girgis Afaf
Published: May 2022

Objective It has been established that the implementation of patient-reported outcome measures (PROMs) in routine care provides significant benefits to patients, providers and health services. However, there are patient-level barriers that must be identified and addressed for the successful implementation of PROMs. This study aimed to understand the capabilities and preferences of our cancer patient population prior to implementation of electronically collected PROMs (ePROMs). Specifically, we conducted a clinic audit to determine the proportion of patients in clinics with access to out-of-clinic internet; those preferring to complete PROMs on paper or via an electronic device; those capable of completing PROMs in English; and those anticipating requiring assistance to complete PROMs. Methods Patients receiving cancer treatment or follow-up care at two Local Health Districts (LHDs) in New South Wales, Australia, completed a questionnaire (audit form) with items about internet and mobile access, communication preferences and assistance needed to complete PROMs. Participant demographic and treatment information were extracted from their electronic medical records. Results Across both LHDs, 637 of 1668 participants (38%) completed the audit forms. Mean participant age was 65 years (range = 23–98), 53% were female, and 92% were outpatients. Patients in the two LHDs differed in their levels of internet and email access, and ability to complete PROMs independently in English, suggesting that some LHD-specific tailoring of implementation strategies is necessary to optimise ePROMs uptake. Conclusion This study highlights the importance of understanding the specific local contexts and patient populations, including potential technology and language barriers, which can influence patient ability to complete ePROMs.
Qualitative exploration of Australian Muslim patients’ perceptions and experiences surrounding medication management during Ramadan
Authors: To The-Phung , Taylor Simone E. , Abdullah Ayat , Abdullah Nur , Huang Kerry , Khan Naemah , Shirzad Sakinah , Elmi Huda , Zayegh Iman
Published: May 2022

Objective To explore Australian Muslim patients’ perceptions and experiences surrounding medication management practices during Ramadan. Methods This was a qualitative exploration of the views and experiences of Muslim patients who were hospitalised during or shortly prior to Ramadan 2021. Data comprised comments obtained from a cross-sectional telephone or face-to-face questionnaire about medications and Ramadan fasting at a tertiary-referral hospital in Melbourne, Australia. A purposeful criterion sampling approach was employed for participant recruitment. Data were analysed using thematic analysis. Data were coded inductively and subthemes and themes were developed via an iterative process. Results Comments were provided by 88 patients born in a wide range of countries and with a variety of medical and surgical co-morbidities. Themes identified included interpretation of Ramadan fasting, altering medications to facilitate fasting, perceptions about healthcare professionals and health knowledge. Many patients altered their medications to facilitate Ramadan fasting and there was considerable variability in interpretation of what breaks the fast. Patients’ perceptions and previous experiences with healthcare professionals determined whether they sought advice about managing their medications during Ramadan or dismissed advice and/or self-managed their medications, sometimes inappropriately. Conclusions This exploration of Australian Muslim patients found diverse views and experiences around medication practices during Ramadan – past relationships with healthcare professionals influenced this practice. As there are ramifications for physical, spiritual and family wellbeing, it is imperative that healthcare professionals partner with their Muslim patients to optimise their medication management and health outcomes for Ramadan.
Measurement best practice: ‘To the standards and beyond!’
Authors: Vermeulen Marcel , Pring Adam
Published: May 2022

Ultrasonic flow measurement technology has been used in practical applications for more than 50 years, and for over 30 years in custody transfer oil and gas applications. To acquire optimal results, local regulatory, buyer–seller contracts and international standards are applied. One aspect, recalibration, is often specific to the local regulations within the country of use. In this paper, we will discuss the past, present and future of ultrasonic flowmeter diagnostics. Starting at the beginning, we will discuss the first patent on ultrasonic flow measurement in 1928, to the present condition-based monitoring (CBM) software tools automating data evaluation and providing users with audit trails. The purpose of the modern ultrasonic meter is both to provide high-accuracy flow measurement, and to monitor the health of the meter. Modern diagnostic features help identify any potential cause(s) of measurement deviations.
Recycling of Australian oil and gas assets, an Australian Basel-compliant solution
Authors: Soliman Hunter T. , Brenan P. , Shannon D.
Published: May 2022

Australian offshore petroleum infrastructure decommissioning strategies are dictated by legal requirements set out in the Offshore Petroleum and Greenhouse Gas Storage Act, requiring prima facie that assets are removed from the title area. Legally, once assets are decommissioned, they require disposal at a Basel-compliant facility. This lack of Australian capability has forced titleholders to contemplate leaving infrastructure in situ (rigs-to-reef), which may well breach Australia’s international law obligations under the United Nations Convention on the Law of the Sea, and the London Convention on Dumping at Sea (and associated Protocols). Australia’s closest Basel-compliant facility is located in Turkey. The experience of the Iron Chieftain in 2019 demonstrated the difficulty in using this facility. In 2019 the bulk carrier Iron Chieftain caught fire in Port Kembla, and was declared a Constructive Total Loss (CTL). Disposal required decontamination, seeking Basel export approval, and towing to Turkey via South Africa. Following 9 months to complete the application, the vessel commenced its tow. The vessel was not permitted to stop or enter the port waters of any port other than Turkey after leaving. If it did stop, the application ceased and a new application was required to be commenced. If the vessel arrived in a condition not acceptable to authorities, the vessel would be turned away, requiring it to return to its home port of Port Kembla where the application commenced from. In response to such difficulties, a new Basel-compliant recycling facility has been established, co-located to a green steel recycling works, delivering a near carbon-neutral asset recycling and disposal solution for Australia’s offshore energy infrastructure. Strategically located in the mouth of the Spencer Gulf, South Australia, this facility will provide a green whole-of-asset recycling and disposal solution in-country, removing towage expenses and CO2 emissions. This extended abstract articulates the Iron Chieftain experience, highlighting the issues facing petroleum infrastructure decommissioning and disposal in accordance with Basel requirements. It also provides an overview of the Whyalla recycling and disposal facility, presenting the case for circular economy, ethical asset decommissioning and Australian capability.
Co-application of micro-proppant with horizontal well, multi-stage hydraulic fracturing treatments to improve productivity in the Permian coal measures, Bowen Basin, Australia
Authors: Ramanandraibe Honja Miharisoa , Sedaghat Mohammad , Johnson Raymond , Santiago Vanessa
Published: May 2022

Coal permeability is the key discriminator in well completion selection in coal wells. Low productivity is often attributed to compartmentalisation and pressure-dependent permeability (PDP) effects. Often, vertical well hydraulic fracturing is used to enhance productivity from lower-permeability coals, however, several authors have noted that coal fracture treatments can generate a large unpropped area of stimulated reservoir volume (SRV) that is generated from natural fracture activation and pressure-dependent leakoff. The result of this study confirms previous studies (using radial, cartesian, and enhanced SRV analytic models) that graded particle or micro-proppant injections in conjunction with hydraulic fracture treatments can be a means to enhance coal productivity in PDP-affected or low-permeability coals. In this work, data from the Bowen Basin will be used to investigate the implementation and benefits of micro-proppants in conjunction with horizontal well, multi-stage, hydraulic fracture treatments. The calibrated model will be based on a Bowen Basin case incorporating petrophysical, diagnostic fracture injection test (DFIT), hydraulic fracture, and can utilise production data to constrain modelling parameters. To better understand and provide guidance on co-application of horizontal, multi-stage hydraulic fracturing in conjunction with micro-proppant injections, a range of factors will be evaluated in this model including initial permeability, permeability anisotropy, fracture half-length, area and conductivity of the enhanced region between fractures, lateral length, and the number of fractures. This model will demonstrate the effectiveness, economic benefits, and optimal number of fracturing stages based on the reservoir parameters.
Developing Australia’s underground hydrogen storage through demonstration
Authors: Watson Max , Ennis-King Jonathan , Hortle Allison , Raab Matthias
Published: May 2022

For Australia to capitalise on the growing hydrogen (H2) economy, the current capability gap for large-scale, secure and cost-effective H2 storage must be addressed. Large-scale underground hydrogen storage (UHS) in porous reservoirs offers the required capacity to balance discrepancies between demand and supply over seasonal durations, and support decarbonisation and security in Australia’s energy system. This becomes essential for export and domestic markets from 2030 onwards. UHS in depleted gas fields can address the infrastructure and safety challenges, as well as supporting long-term supply security while decreasing delivery price through economies of scale. However, the technical readiness for Australia’s industries to undertake UHS is low, with scientific challenges around how stored H2 interacts with subsurface rocks and fluids, and how this impacts the storage efficiency. A commercially relevant demonstration of UHS is essential for providing the knowledge and confidence for large investment into commercial scale UHS. CO2CRC and CSIRO are collaboratively developing such a demonstration, utilising data and learnings from the Otway International Test Centre, as a proxy for commercial-scale UHS operations.
Uncertainty analysis on environmental impacts of hydraulic fracturing
Authors: Movassagh Abbas , Arjomand Elaheh , Kasperczyk Dane , Kear James , Dance Tess
Published: May 2022

Uncertainty is an undeniable aspect of underground operations, such as wellbore stimulation treatments, where combined rock and fluid interaction add a layer of complexity to the uncertainty. There are social and environmental concerns about the probable outcome of operations like hydraulic fracturing. Hydraulic fracturing treatments may affect the integrity of sub-surface geological strata or might initiate unexpected potential risks to the environment when the created fracture extends beyond its engineered design. Therefore, it is necessary to investigate a range of possible scenarios by which the fracture may experience a deviation from its planned behaviour. In this study, we model the uncertainty associated with hydraulic fracturing using fracture growth simulation. The uncertainty of a range of treatment parameters, such as pumping flow rate, injection duration and mechanical properties of the underground geological layer, is investigated. Monte Carlo simulation is used to examine different probable fracturing scenarios and numerous fracturing simulations with numerical and analytical models. The probability analysis is performed in a case study to identify the cumulative distribution functions (CDFs) of fracture growth. The emerging least, median and most likely situations of fracture growth are analysed to evaluate the fracturing uncertainty. Our results indicate that the numerical modelling approach may predict a more extensive fracture growth in the vertical plane. The numerical model may suggest a more conservative way to address environmental concerns. The resulting cumulative distribution of probabilities suggests the CDFs of the analytical model as the lower band for fracture length, whereas the numerical CDFs presents the upper band.
Stratigraphic framework and structural architecture of the Upper Cretaceous in the deep-water Otway Basin – implications for frontier hydrocarbon prospectivity
Authors: Nicholson Chris , Abbott Steve , Bernardel George , Gunning Merrie-Ellen
Published: May 2022

Geoscience Australia has undertaken a regional seismic mapping study that extends into the frontier deep-water region of the offshore Otway Basin. This work builds on seismic mapping and petroleum systems modelling published in the 2021 Otway Basin Regional Study. Seismic interpretation spans over 18 000 line-km of new and reprocessed data collected in the 2020 Otway Basin seismic program and over 40 000 line-km of legacy 2D seismic data. Fault mapping has resulted in refinement and reinterpretation of regional structural elements, particularly in the deep-water areas. Structure surfaces and isochron maps highlight Shipwreck (Turonian–Santonian) and Sherbrook (Campanian–Maastrichtian) supersequence depocentres across the deep-water part of the basin. These observations will inform the characterisation of petroleum systems within the Upper Cretaceous succession, especially in the underexplored deep-water region.