bluuebunny/crossref_metadata_2025 huggingface dataset:
Diversity of Soil Bacteria Communities: A Case Study in Wonorejo Mangrove
Authors: Lisdiana Lisa , Amaliah Afrida , Rifda  , Ambarwati Reni , Ducha Nur , Budijastuti Widowati , Rachmadiarti Fida
Published: December 2022

Mangrove habitats are found in coastal areas and have unique environmental conditions. The mangrove habitat contains abundant and various microbial resources, which play critical roles in mangrove ecosystem maintenance and function. One of the intriguing mangrove habitats to study is the Wonorejo Mangrove, Surabaya. In this current research, the abundance and diversity of bacterial communities in four areas of Wonorejo Mangrove, Surabaya, were determined. The four areas of interest included mangrove by the river with a jogging track (station 1), mangrove by the river without a jogging track (station 2), mangrove in the estuary (station 3), and mangrove in the pond (station 4). Soil samples were collected from the four stations, then the abundance of bacteria was determined by using the Standard Plate Count method. The bacterial colonies that grew from each sample were then listed and characterized based on their colony morphology. The results indicated that the highest abundance was at station 4 with the number of bacteria at 1.83x107 CFU/ml, while the lowest abundance was at station 1 with 5.3x 104 CFU/ml. The structure of bacterial communities of each station was varied. Nevertheless, one of the isolates, namely isolates TS1.1 can be observed in all of the samples. We can conclude that the abundance and the diversity of bacterial communities are affected by environmental factors. This research further deepens our understanding of the bacterial dynamics in Wonorejo mangrove habitats.
A Review of Social Media Roles in E-Government
Authors: Arief Assaf , Suyuti Suyuti , Khairan Amal
Published: December 2022

The fact showed that social media is a potential and profitable platform to increase public interest in adopting e-government by conducting open interactions with societies. However, despite the many benefits of social media, the risk of using social media still exists if the government cannot control it properly, such as misuse of information by irresponsible people. So, an effective strategy is needed to maximize the advantages and minimize the disadvantages/risks of using social media in e-government. In addition, the success factors of social media in e-government for success in implementation. By taking a systematic review technically in journals published in 2017-2021. The study looks for positive and negative impacts, strategies, and success factors of social media in e-government. The results are obtained from the role, positive and negative impacts, strategies, and success factors of using social media in e-government. Next, it is necessary to carry out the same research based on country/region segmentation by considering economic, political, social, security, and cultural conditions so that the results are even more specific.
Optimal Filter Assignment Policy Against Distributed Denial of Service Attack on Router Mikrotik
Authors: Lutfi Salkin , Khairan Amal , Muin Yasir , Salmin Munazat
Published: December 2022

Information technology is currently one of the things that almost all universities widely adopt. The development of information technology requires universities to manage potential resources effectively and efficiently. as stated in the regulation of the Minister of Research, Technology, and Higher Education Number 62 of 2017 concerning the governance of information technology in the university environment that is to support the achievement of increasing access, relevance, quality of higher education, innovation, and strengthening governance and accountability of a university. The consequence of the application of information technology is the emergence of information security risks, the threat of this attack is a concern that every university must be wary of to secure network infrastructure from these attacks. Open access provides great potential for everyone to commit crimes against network infrastructure. as explained that computer network security is part of a system that is very important to be maintained, for that it is necessary to make efforts that can be made by the party responsible for securing the University X network from DDoS attacks. the method used to secure the network infrastructure makes a filtering policy to block DDoS attacks, the results obtained from the application according to the filter rules applied to the proxy device successfully block DDoS attacks.
Internet of Things (IoT) Based Aquaculture Monitoring System
Authors: Bachtiar Mohammad Iqbal , Hidayat Rachmad , Anantama Rizki
Published: December 2022

Aquaculture is one of the fastest growing manufacturing businesses in many parts of the world as the demand for fish and processed fish feed is increasing day by day. Aquaculture is also known as aquaculture, breeding, rearing, collecting fish, seaweed, seaweed and many other organisms. It is also defined as a breeding species that thrives in an aquatic environment under controlled conditions. This study is developing an aquaculture system that can remotely monitor water acidity, temperature, and turbidity levels using the Internet of Things (IoT). Sensors are installed in this system to receive data. Results obtained with all systems developed, the success rate for acid-base monitoring is 97.66%. The success rate for water temperature monitoring is 94.92%. For cloudy water, use a range of numbers from 1 to 50, where 1-9 is clear water, 10-24 is slightly cloudy, 25-49 is fairly cloudy, and more than 50 is very cloudy.
Developing a Web-Based Information System for Tour Package Ticket Purchases (Case Study: Bersukaria Tour)
Authors: Saka Fitri Anindo , Arya Rafa Daud , Yusuf Al Ma’ruf Achmad , Ana Wati Farkhan Fitri , Rezha Efrat Najaf Abdul
Published: December 2022

The expansion of the tourism industry's information system is one opportunity for growth, as a result, Bersukaria Tour was used as a case study in this study. Bersukaria is one of the MSMEs in Semarang which is engaged in tourism. Although Bersukaria already has a website, its operational procedures and interface design should yet be improved. As a result, the authors create the website to optimize business process flow and enhance visual appeal. The method used is the waterfall which involves the Bersukaria team to find out the needs of the application to be developed. Black box testing is used in the application testing process so that built-in application functionalities can be validated. If there are features that need to be improved, they can be adjusted immediately. The online ticket information system on the website is able to have a positive impact because tour participants do not need to queue and pay offline, making it easier for participants to make reservations. Additionally, participant data is kept in a database, and the website allows users to see updates to the participant quota. The findings of this study should help Bersukaria Tour in creating and improving the website system and increasing interest among local and international audiences in visiting Indonesia's tourist destinations.
Role of Titab Reservoir in Sustainable Irrigation Requirements in Downstream Saba Watershed
Authors: Nur Indah Sari Siti , Utary Chitra , Infantry Yekti Mawiti , van der Krogt Wil
Published: December 2022

The Saba watershed is the main water source for irrigation areas downstream of the Saba river. The Titab Reservoir was built to be able to meet the continuity of irrigation water supply, especially during the dry season. This study aims to analyze the fulfillment of irrigation water requirements provided by the Titab reservoir. The study began by collecting data first, in the form of primary and secondary data. Primary data is used to see the existing conditions. Secondary data is used for irrigation requirements analysis and simulation. The secondary data used for manual calculations are 15 daily rainfall data, 15 daily measured discharge, and climate data for 10 years from 2006-2016. The output of these data is the need for irrigation water, the potential evaporation, and the discharge reliability used for the simulation. The simulation was carried out using the RIBASIM 7.01.24 program by entering the calculated data and the existing reservoir data. The simulation results show that the irrigation water needs supplied in each irrigation area are not sufficient according to the plan and the reservoir reliability value is low, namely 57.35%.
Optical Properties of Erbium-Doped Tellurite Glasses: A Review and Bibliometric Study
Authors: Jauhariyah Mukhayyarotin Niswati Rodliyatul , Marzuki Ahmad
Published: December 2022

The aim of this paper is to review the optical properties of tellurite glasses doped by erbium and describe their bibliometric study about it. The research documents on of optical properties of tellurite glasses doped by erbium in the Scopus database are 115, start from 1999 until now. The visualization of the research assisted by VOSviewer software. There are three clusters: (1) red cluster for the optical properties begin from the fabrication process until the characterization of glasses based on the geometrical optics phenomena, (2) green cluster for the emission spectra until the analysis using McCumbers Theory, and (3) erbium-doped tellurite glasses optical properties based on energy transfer and XRD analysis on the blue cluster. Based on the Scopus documents, not too many researchers are concerned with researching erbium-doped tellurite glasses, never more than 12 documents per year. However, the researchers are consistent to explore further exploring the characteristics of the optical properties of glass exposed to erbium ion for laser applications.The research funding shows that the tellurite glasses doped by erbium are being developed for laser applications.
Analysis of Lead (Pb) in Leaf of Tabebuia aurea from Polluted Air
Authors: Fida Rachmadiarti , Mahanani Asri , Kandilia Sari Sahani , Yulia Nella , Aisyah Nafidiastri Farah
Published: December 2022

One of the three major heavy metals which can be harmful to plants, animals, and humans is lead (Pb). Smoke from gasoline fueled motor vehicles become the sources of these pollutants. In plants, including Tabebuia aurea can be found in the roads that are often passed by vehicles, so lead exposure is unavoidable.The purpose of this research was 1) to analyze the lead levels in T. aurea leaves, 2) to analyze the chlorophyll levels in T. aurea leaves, 3) to analyze the growth (leaf area). The Pb level in plant leaves was calculated using AAS (Atomic Absorption Spectrophotometer), chlorophyll level using spectrophotometer, growth was measured with leaf meter. Data were analyzed by descriptive and Anova. Based on the research and analysis that have been carried out can be concluded that 1) Pb metal levels 0.09 – 0.187 mg/L, 2) leaf chlorophyll levels ranges from 2.719 – 7.594 mg/L, and 3) Leaf area ranges from 186.720 – 199.288 cm2.Analysis with Anova ahows that the sampling location affected the Pb and chlorophyll content in the leaves,while the location did not affect the surface area of T. aurea leaves. The results of this research indicate that T. aurea can be used as a plant to absorb Pb pollutants in the air.
Planning of School Safety Zone (Zoss) On The Education Road Of Merauke Regency
Authors: Utary Chitra , Nabahan Dewi S. , Budianto Eko , Indah Sari Siti Nur
Published: December 2022

School Safety Zone (ZOSS) One of the efforts given by the government to children's schools is to implement facilities that support the safety of pedestrians. Jalan Pendidikan is a road that is used by many vehicles because several schools can cause problems, one of which is that it can cause school children to be prone to traffic accidents. The purpose of this study was to determine thelevelof roadservice, andthe levelof pedestrians, andtoplan ZOSS on Jalan Pendidikan. The method used in this study is based on the 1997 Indonesian Road Capacity Manual (MKJI) and based on SK.3582/AJ.403/DRJD/2018. The data taken are pedestrian volume, traffic volume, vehiclespeed, and sidebarriers.Based ontheresults that canbeobtained from the level of road service on Jalan Pendidikan using the 1997 MKJI, the capacity (C) =1462 smp/hour, with a degree of saturation (DS) = 0.29 with a service level of B. From the results of the analysis of the volume of pedestrians, It can be seen that pedestrian activity is 32% during school children's entry hours and after school hours, both set and crossing the road. Based on SK.3582/AJ.403/DRJD/2018 plural ZOSS can be applied which consists of road markings and traffic signs.
Risk Analysis in the Supply Chain of Cane Sugar Industry in Sidoarjo
Authors: Rochmoeljati Rr. , Dewi Sinta , Azizah Chori Dwi
Published: December 2022

Fluctuating demand conditions will cause a lot of uncertainty that can pose risks. In this condition, the company must have the right strategy to minimize the risks that occur to increase competitiveness. The sugar industry is an industry that has a complex supply chain flow, and of course,every process is inseparable from risks. The purpose of this study is to identify and analyze the potential risks in the company's supply chain as a basis for preparing the right strategy for the company. The Supply chain Operation Reference (SCOR) and House Of Risk (HOR) methods were used in this study to identify possible processes and risks. House Of Risk Phase 1 results in 30 risk events and 44 risk agents. And of the 44 selected risk agents, 13 priority risk agents have the highest probability of occurrence. The 13 risk agents come from the plan, source, make, and delivery processes, but the dominant risk agents appear in the make and source processes.
Ergonomics Leg Prosthetic Redesign Using An Anthropometric Approach
Authors: Annisa Rullie , Hidayat Rachmad , Winarso Kukuh , Agustina Fitri , Salimah Shofi Fitrotis
Published: December 2022

There are several factors and conditions that need attention such as patient health, different sizes and components used in manufacturing leg prosthetic. During this time, Mr.X has used prosthetic leg but with an inappropriate size, the prosthetic leg is longer than the original size of MR.X's foot so that it results in discomfort when use until complaints of injury. One ergonomic approach that can be applied in the design of an equipment to produce optimal products according to the dimensions of the user's body is anthropometry. Measurement of anthropometric data according to the body dimensions of Mr.X for the redesign of prosthetic leg by paying attention to the work activities of the user including the body dimension of D6 of 87.5 cm, D7 of 64 cm, D11 of 38 cm, D12 of 11.8 cm, D13 of 39 cm, D14 of 37 cm, D15 is 52 cm,D16 of 40.2 cm, D30 is 20.5 cm and D31 of 8 cm. In the trial redesign of Leg Prosthetic obtained a better sense of comfort, lighter than the previous prosthetic leg, and no need to use tools in the form of sticks when walking.
Solar Evaporation System Using Spray Pipe Method
Authors: Muljani Srie , Sumada Ketut , Pujiastuti Caecilia
Published: December 2022

Evaporation of water using a spray pipe is required to expand the contact between hot air and water surface so that the rate of evaporation of water becomes faster. Salt production in the case of solar evaporation may take weeks to obtain salt. This study aims to observe the correlation of flow rate and evaporation time on salinity by considering several potential factors. The experiment was carried out in two stages, the first stage on a small scale where spray evaporation was carried out in an evaporation pond with an area of 1x2 m2, seawater rate 0.8 – 2.0 L/min, seawater volume 100 L. The second stage of spray evaporation is carried out on an evaporation pond of 3x15 m, a flow rate of 0.3-0.6 L/s, and a seawater volume of 220 L. Observation of the evaporation time for 30 h at an evaporation rate of 0.6 L/s obtained a salinity of 22.6 Be while at a rate of 2L/min it could reach a degree of salinity 23.8Be within 90 h.
Das Sjögren-Syndrom aus Sicht der Erfahrungsheilkunde
Authors: Noschinski Dirk-Rüdiger
Published: December 2022

Das Sjögren-Syndrom hat sehr verschiedene Facetten, da es unterschiedliche Bereiche des Körpers befallen kann. Leitsymptome sind Xerostomie und Xerophthalmie, die in nahezu allen Fällen auftreten. Deswegen sollten Sie bei therapieresistenten Erkrankungen im Bereich des zentralen Nervensystems, des peripheren Nervensystems, des Gastrointestinaltrakts, Atmungstrakts oder Nieren, die mit Mundtrockenheit einhergehen, differenzialdiagnostisch an ein Sjögren-Syndrom denken. Eine erfolgversprechende naturheilkundliche Behandlungsstrategie kombiniert verschiedene therapeutische Elemente wie Ernährung, Mikronährstoffe, Ausleitung und anthroposophische Heilmittel im Sinne einer personalisierten Medizin.
Colonoscopy quality improvement after initial training: A cross-sectional study of intensive short-term training
Authors: Schult Anna Lisa , Hoff Geir , Holme Øyvind , Botteri Edoardo , Seip Birgitte , Ranheim Randel Kristin , Darre-Næss Ole , Owen Tanja , Nilsen Jens Aksel , Nguyen Dung Hong , Johansen Kristin , de Lange Thomas
Published: December 2022

Background and study aims High-quality is crucial for the effectiveness of colonoscopy and can be achieved by high-quality training and verified with assessment of key performance indicators (KPIs) for colonoscopy such as cecum intubation rate (CIR), adenoma detection rate (ADR) and adequate polyp resection. Typically, trainees achieve adequate CIR after 275 procedures, but little is known about learning curves for KPIs after initial training.

Methods This cross-sectional study includes work-up colonoscopies after a positive screening test with fecal occult blood testing (FIT) or sigmoidoscopy, performed by either trainees after 300 training colonoscopies or by consultants. Outcome measures were KPIs. We assessed inter-endoscopist variation in trainees and learning curves for trainees as a group. We also compared KPIs for trainees and consultants as a group. 

Results Data from 6,655 colonoscopies performed by 21 trainees and 921 colonoscopies performed by 17 consultants were included. Most trainees achieved target standards for main KPIs. With time, trainees shortened cecum intubation time and withdrawal time without decreasing their ADR, reduced the proportion of painful colonoscopies, and increased the adequate polyp resection rate (all P < 0.01). Compared to consultants, trainees had higher CIR (97.7 % vs. 96.3 %, P = 0.02), ADR after positive FIT (57.6 % vs. 50.3 %, P < 0.01), and proximal ADR after sigmoidoscopy screening (41.1 % vs. 29.8 %; P < 0.01), higher adequate polyp resection rate (94.9 % vs. 93.1 %, P = 0.01) and fewer serious adverse events (0.65 % vs. 1.41 %, P = 0.02).

Conclusions Trainees performed high-quality colonoscopies and achieved international target standards. Several KPIs continuously improved after initial training. Trainees outperformed consultants on several KPIs.
Synthesis of a Gal-β-(1→4)-Gal disaccharide as a ligand for the fimbrial adhesin UcaD
Authors: Boittier Eric D. , Wimmer Norbert , Harris Alexandria K. , Schembri Mark A. , Ferro Vito
Published: December 2022

The disaccharide Gal-β-(1→4)-Gal was recently identified as a ligand for the adhesin UcaD, a fimbrial protein used by Proteus mirabilis to adhere to exfoliated uroepithelial cells and colonise the urinary tract. To facilitate further studies, Gal-β-(1→4)-Gal was synthesised as the α-methyl glycoside via glycosylation of methyl 2,3,6-tri-O-benzoyl-α-d-galactopyranoside with 2,3,4,6-tetra-O-acetyl-d-galactopyranosyl trichloroacetimidate, followed by deprotection. The disaccharide was fully characterised by NMR spectroscopy. Earlier attempts to use a thiogalactoside as the glycosyl acceptor were hindered by intermolecular aglycone transfer side reactions.
Enhancement of PIV measurements via physics-informed neural networks
Authors: Hasanuzzaman Gazi , Eivazi Hamidreza , Merbold Sebastian , Egbers Christoph , Vinuesa Ricardo
Published: December 2022

Physics-informed neural networks (PINN) are machine-learning methods that have been proved to be very successful and effective for solving governing equations of fluid flow. In this work we develop a robust and efficient model within this framework and apply it to a series of two-dimensional three-component stereo particle-image velocimetry (PIV) datasets, to reconstruct the mean velocity field and correct measurements errors in the data. Within this framework, the PINNs-based model solves the Reynolds-averaged-Navier–Stokes equations for zero-pressure-gradient turbulent boundary layer (ZPGTBL) without a prior assumption and only taking the data at the PIV domain boundaries. The turbulent boundary layer (TBL) data has different flow conditions upstream of the measurement location due to the effect of an applied flow control via uniform blowing. The developed PINN model is very robust, adaptable and independent of the upstream flow conditions due to different rates of wall-normal blowing while predicting the mean velocity quantities simultaneously. Hence, this approach enables improving the mean-flow quantities by reducing errors in the PIV data. For comparison, a similar analysis has been applied to numerical data obtained from a spatially-developing ZPGTBL and an adverse-pressure-gradient TBL over a NACA4412 airfoil geometry. The PINNs-predicted results have less than 1% error in the streamwise velocity and are in excellent agreement with the reference data. This shows that PINNs has potential applicability to shear-driven turbulent flows with different flow histories, which includes experiments and numerical simulations for predicting high-fidelity data.
ITB formation in gyrokinetic flux-driven ITG/TEM turbulence
Authors: Imadera Kenji , Kishimoto Yasuaki
Published: December 2022

The formation mechanism of internal transport barriers (ITBs) in flux-driven turbulence is studied by means of the full-f gyrokinetic code GKNET. In the adiabatic electron case with a weak magnetic shear configuration, toroidal momentum injection can change the radial mean electric field

E
r

through radial force balance, leading to a kind of driven ITB formation in which the ion thermal diffusivity by ion temperature gradient (ITG) turbulence decreases to the neoclassical transport level. Only cocurrent toroidal rotation in the outer core region can benefit the ITB formation, and this mechanism is identified to originate from a positive feedback loop between the radial

E
r

shear and resultant momentum flux. On the other hand, in the kinetic electron case with a reversed magnetic shear configuration, robust co-intrinsic rotation is driven near the

q

min

surface in ITG turbulence and sustains the

E
r

shear through the radial force balance, leading to the spontaneous reduction of ion turbulent thermal diffusivity, while this is not observed in the adiabatic electron case. In the presence of electron heating, counter-intrinsic rotation by trapped electron mode turbulence is selectively driven in the negative magnetic shear region, which provides steeper

E
r

shear formation and a resultant larger reduction of ion turbulent thermal diffusivity. This indicates that the co-existence of different modes can trigger the ‘discontinuity’ of mode structure, intrinsic rotation, and resultant mean

E
r

near

q

min

, leading to spontaneous ITB formation.
Influence of magnetic field strength on capacitively coupled CF4 discharge at different pressures
Authors: Yang Shali , Lin Hanlei , Zhang Tianxiang , Peng Yanli , Zhang Qiang
Published: December 2022

The influence of a homogeneous magnetic field parallel to the electrodes on the plasma properties and electron heating mode was investigated by a one-dimensional particle-in-cell/Monte Carlo simulations in electronegative CF4 discharges. The discharge conditions are Z = 3.5 cm, f = 13.56 MHz,

V

0

=
300

 V, and the various gas pressure of 10 mTorr, 100 mTorr and 200 mTorr. It is found that, in the absence of a magnetic field, the discharges are electronegative at different pressures and the electronegativity is stronger at higher pressure. When a homogeneous magnetic field is applied, the electron density significantly increases and the electronegativity decreases to varying degrees at different pressures. At p = 10 mTorr and p = 100 mTorr, a transition from a hybrid combination of α and drift-ambipolar (DA) modes into a pure α mode is induced by a weak magnetic field. At p = 200 mTorr, a transition from a DA mode into a hybrid combination of α and DA modes is induced by a relatively high magnetic field. The strength of the magnetic field required to induce mode transition becomes stronger at higher gas pressures. This is because increasing the pressure reduces the mean free path and the frequent electron-neutral collisions disrupt electron gyromotion, thus the effects of the magnetic field are greatly reduced.
Electronic transport properties of Ti-supersaturated Si processed by rapid thermal annealing or pulsed-laser melting
Authors: Olea J , González-Díaz G , Pastor D , García-Hemme E , Caudevilla D , Algaidy S , Pérez-Zenteno F , Duarte-Cano S , García-Hernansanz R , del Prado A , San Andrés E , Mártil I
Published: December 2022

In the scope of supersaturated semiconductors for infrared detectors, we implanted Si samples with Ti at high doses and processed them by rapid thermal annealing (RTA) to recover the crystal quality. Also, for comparative purposes, some samples were processed by pulsed-laser melting. We measured the electronic transport properties at variable temperatures and analyzed the results. The results indicate that, for RTA samples, surface layers with a high Ti concentration have negligible conductivity due to defects. In contrast, the implantation tail region has measurable conductivity due to very high electron mobility. This region shows the activation of a very shallow donor and a deep donor level. While deep levels have been previously reported for Ti in Si, such a shallow level has never been measured, and we suggest that it originates from Ti-Si complexes. Finally, a decoupling effect between the implanted layer and the substrate seems to be present, and a bilayer model is applied to fit the measured properties. The fitted parameters follow the Meyer–Neldel rule. The role of the implantation tails in Si supersaturated with Ti is revealed in this work.
Adsorption of phosphate ions from water using PVA-NiO nanocomposite based on tuning influence of pulsed laser ablation method
Authors: Toghan Arafat , Mwafy Eman A , Mostafa Ayman M , Rezk Reham A
Published: December 2022

For the purpose of getting rid of phosphate in the direction of preserving the eco-system, nickel oxide nanoparticles (NiO NPs) have recently been used to address this issue. For that, NiO NPs were generated using a laser ablation in liquid method of PVA solution and encapsulated in a PVA matrix structure with different particle sizes using a nanosecond solid-state laser with a change in laser influence. Then, their physicochemical properties were studied using various methods. It was found that NiO NPs were distributed very well inside the PVA structure, which was confirmed by the presence of both characteristic vibrational peaks of PVA and NiO with shifting in the peak of PVA and the appearance of the main characteristic transition peaks of the d-d transition of NiO, relating to the impedance of the PVA structure with NiO NPs. The optimal conditions for the elimination of phosphate ions from water solutions were determined by examining the impacts of a number of important affected parameters. A concentration of 100 mg L−1 of phosphate can be removed from a liquid medium at pH 6 using a PVA-NiO nanocomposite. This work lays the route to getting on different nanocomposite materials to get rid of different hazardous chemical compounds.
Some optical and microstructure characteristics of effective cost ZnO-containing hydroxyapatite
Authors: Mahdy Manal A , Sherif H H A , Kenawy S H , El-Bassyouni G T , Hamzawy E M A , El Zawawi I K
Published: December 2022

Metal oxide like zinc oxide (ZnO) is recognized to be one of the versatile inorganic compounds due to its physical properties. Crystalline compositions, morphology, particle size, and chemical bonds of pure hydroxyapatite (HA) and ZnO/HA were characterized by x-ray diffraction (XRD), Scanning and transmission electron microscopy (SEM and TEM), Fourier transform infrared spectroscopy (FT-IR), and Raman scattering detected crystalline and bond structure. Nanocomposites were crystallized in a main monoclinic phase of HA and a minor hexagonal phase of ZnO with particle size (18–29 nm) and grain size (75–200 nm) for the synthesized samples were identified. Moreover, the existence of the phosphate, carbonate ions, and hydroxyl groups in the HA and its composites structure was assured by the FT-IR assessment. The optical bandgap (Eg) of HA showed two transitions at 3.24 and 4.37 eV; these values decreased with the incorporation of ZnO. The determining optical and photoluminescence properties confirmed the presence of ZnO content in the HA matrix.
Tighter sum uncertainty relations via metric-adjusted skew information
Authors: Li Hui , Gao Ting , Yan Fengli
Published: December 2022

In this paper, we first provide three general norm inequalities, which are used to give new uncertainty relations of any finite observables and quantum channels via metric-adjusted skew information. The results are applicable to its special cases as Wigner-Yanase-Dyson skew information. In quantifying the uncertainty of channels, we discuss two types of lower bounds and compare the tightness between them, meanwhile, a tight lower bound is given. The uncertainty relations obtained by us are stronger than the existing ones. To illustrate our results, we give several specific examples.
Introduction
Authors: Loboda E L , Grishin A M
Published: December 2022

The history of the All-Russian Scientific Conference "Conjugate Problem of Mechanics of Reactive Mediums, Informatics and Ecology" had started with scientific seminars, which began in 1973 at the initiative of young personnel of the Aerothermochemistry Department of the Research Institute of Applied Mathematics and Mechanics of Tomsk State University. They tested new scientific results and established channels with leading scientists of scientific schools.
Hazard assessment method for underwater potentially hazardous objects
Authors: Bolshagin A Yu , Gavrilyuk A A , Dolgov A A , Zinoviev S V , Lezhaev I F , Tuzov F K
Published: December 2022

The article describes a method for assessing the danger of Underwater Potentially Hazardous Objects (PHUOs). The method based on data on the maximum permissible concentrations of hazardous substances in marine areas. For using the proposed method, accurate information of type of hazardous substances contained in the protective shells of the PHUO, and their quantity are required. To assess the scale of pollution of water areas, data on the depth of the object and the hydrological characteristics of the water area are required. A salvo release is considered as a mechanism for the release of hazardous substances from the PHUO, as the most destructive for the water area where underwater potentially dangerous object is located. The concepts of "shallow sea" and "deep sea" are introduced. For these concepts, the features of the distribution of hazardous substances from PHUO are determined. A criterion is given that allows making the right choice of the algorithm for calculating the spread of hazardous substances in the water area of the PHUO. Algorithms for estimating the parameters of the distribution of hazardous substances in the conditions of "shallow" and "deep" sea, in the presence and in the absence of underwater currents, are given.
Influence of ground shaking on the fault: numerical simulation
Authors: Nemirovich-Danchenko M M , Khudorozhko I N , Chubarov D L
Published: December 2022

The paper considers a possible model of the behavior of faults under the influence of external influences. A complication in the form of a step is assumed in the structure of the fault banks. A hook on a step leads to the appearance of two local stress concentration regions. A possible mechanism for slowing down the response to external stimuli is discussed. An external influence can be a shaking of the ground from a neighboring earthquake or a deformation tidal wave. The calculation is carried out within the framework of the elastic-brittle medium model by the finite-difference method supplemented with the ability to calculate cracks with the definition of their faces as free surfaces. As a result of the simulation, the emergence of a region of stress concentration is observed, which may not immediately lead to destruction. There will be an accumulation of damage as a result of a hook on the fault step, and the reaction to external influence will slow down. Over time, the medium exhausts the possibilities for implementing all the mechanisms of accommodation to the load, which leads to a break in the vicinity of the roughness with the emission of the next portion of seismic waves.
Numerical modeling of heating a heat flux gauge in a supersonic flow
Authors: Vasnev I R , Fedorova N N
Published: December 2022

This paper has developed a mathematical model for calculating the conjugate heat transfer between a supersonic airflow at the freestream Mach numbers M
∞ = 3, 4, 5, and a copper plate simulating the sensitive thermocouple element. The calculation results are compared with the experiment. The calculations show the effect of turbulence intensity, temperature boundary condition, and flow rate on sensor heating. The results of the sensor's initial heat fluxes, maximum temperatures, and heating times in different flow regimes are presented. Also, the flow regimes with an adiabatic wall are considered. As a result of calculations, it is shown that for the given freestream Mach numbers under "cold" wall temperature conditions, the sensor warms up to the maximum temperature in 1.5-3 seconds and reaches temperatures from 789 to 1076 K. If the adiabatic conditions are assumed at the channel walls, depending on the Mach number at the channel entrance, the sensor is heated from 1600 to 2250 K.
Development of highly sensitive capacitive proximity sensor based on stacked monocharged electrets
Authors: Lee Donghan , Cho Sumin , Jang Sunmin , Park Sung Jea , Choi Dongwhi
Published: December 2022

Recently, the demand for miniaturization and high sensitivity of the capacitive proximity sensors has increased noticeably for development of sensor networks. However, the volume and weight of conventional sensor devices are emerging as limitations in the practical application. In this paper, the stacked electrets-based highly sensitive noncontact capacitive sensor system (SENS) is proposed. The SENS is fabricated in compact-sized and light weight because electrets, which are dielectric materials that have quasi-permanent injected electric charges so can form external electric field, substitute the transmitter electrode and the external power source. Also, sensitivity of the SENS is effectively improved by stacking electrets. For experimental analysis, the electrostatic properties of the stacked electrets, which are due to the injected charges, and resultant influences on the sensitivity of the SENS are studied. In addition, based on experimental results, a proximity notification system with the SENS is developed using a LabVIEW program to demonstrate the practicality of the SENS.
Connecting in place: older adults’ experience of online mindfulness therapy during the COVID-19 pandemic
Authors: Pacini Adele , Stickland Annabel , Kupeli Nuriye
Published: December 2022

Background

the negative consequences of COVID-19 distancing measures on older adults’ mental health and ability to access services have been well documented. Online cognitive behavioural therapy and mindfulness interventions for older adults, carried out during the COVID-19 pandemic, have shown that these interventions are feasible and have potential mental health benefits. However, little research has been carried out on older adults’ experiences of engaging with online psychological therapy, and specifically mindfulness therapy.

Objectives

to understand the experience of older adults engaging with online mindfulness therapy during the COVID-19 pandemic.

Study design

a qualitative analysis of four community-based focus groups.

Participants

thirty-six community dwelling older adults aged between 65 and 85 years were recruited via older adult organisations, charities and the local press. Nineteen percent had long-term physical health conditions, 25% had severe and enduring mental health difficulties and 19% had mild to moderate mental health difficulties.

Results

there was a strong sense of group cohesion and community from the participants.

Three main themes were identified: reasons for applying, experience of the mindfulness therapy and connecting at home.

Conclusions

the majority of participants were positive about attending a mindfulness group online. This extended to the perceived psychological and social benefits as well as practical considerations. While some participants noted technological hurdles at the beginning of the course, the findings challenge previous studies that suggest older adults are reluctant to engage in online psychological therapies and has important implications for the future provision of psychological therapies to this population.
The metabolites ofde novoNAD+ synthesis are a valuable predictor of acute kidney injury
Authors: Wang Yujia , Guan Yi , Xie Qionghong , Gong Weiyuan , Li Jianhua , Chen Tong , Xu Yanfang , Xu Ning , Chen Shaohao , Chen Mo , Wang Zhengxin , Hao Chuan-Ming
Published: December 2022

Background

Acute kidney injury (AKI) is often iatrogenic and potentially preventable. Reduced renal nicotinamide adenine dinucleotide (NAD+) is reported to increase the susceptibility of AKI. The present study explored the predictive value of urinary de novo NAD+ synthetic metabolites for AKI using two independent cohorts.

Methods

The expression of de novo NAD+ synthetic enzymes in human kidney was examined by immunohistochemistry and single-cell transcriptomes. Urine samples were collected from two independent cohorts: the methotrexate (MTX) cohort with high-dose MTX treatment for lymphoma (n = 189) and the liver transplantation cohort with orthotopic liver transplantation (n = 49). Urinary metabolomics study of NAD+de novo synthesis was performed by liquid chromatography with mass spectrometry, screening for AKI predictive biomarkers. Nephroseq database and immunohistochemistry were used to analyze kidney de novo NAD+ synthetic enzymes expression in AKI-susceptible conditions.

Results

Human proximal tubule was the main structure in the kidney that expressed the necessary enzymes for NAD+de novo synthesis. In the MTX cohort, the urinary quinolinic acid (QA)/3-hydroxyanthranilic acid (3-OH AA) ratio before chemotherapy was significantly lower in those who developed AKI after chemotherapy compared with those who did not. This finding was consistent in the liver transplantation cohort. The area under the receiver-operating characteristic curve (AUC) of urinary QA/3-OH AA for AKI prediction was 0.749 and 0.729 in two cohorts, respectively. 3-Hydroxyanthranilic acid dioxygenase (HAAO), the enzyme catalyzing QA synthesis from 3-OH AA, decreased in AKI-susceptible diabetic kidneys.

Conclusions

The human proximal tubules were important source of NAD+ from the de novo pathway. Reduced urinary QA/3-OH AA ratio, which possibly suggested decreased HAAO activity, could be a potential AKI predictive biomarker.
Acute left main coronary occlusion after transcatheter aortic valve implantation: life-saving intervention using the snare technique—a case report
Authors: Lopes Pedro M , Brito João D , Campante Teles Rui , Sousa Almeida Manuel
Published: December 2022

Background

Transcatheter aortic valve implantation (TAVI) has rapidly evolved and changed the field of structural cardiovascular intervention. Its advances lead to a marked reduction in the risk of complications and improved outcomes. However, TAVI is still associated with potential serious complications.

Case summary

A 73-year-old man with severe aortic stenosis underwent TAVI using a 34-mm self-expanding aortic bioprosthesis. After valve deployment, the patient rapidly progressed to cardiac arrest. Acute left main occlusion, due to high valve implantation, was promptly recognized and advanced life support immediately initiated. Concomitantly, the valve was successfully retrieved toward the ascending aorta using the snare technique, resulting in immediate restoration of flow and successful cardiopulmonary resuscitation. Subsequently, a 29-mm balloon-expandable aortic bioprosthesis was uneventfully implanted. After TAVI, the patient had a remarkable clinical evolution and was discharged home at hospitalization day five without relevant electrocardiographic nor echocardiographic disturbances. At six-month follow-up, the patient remains asymptomatic and transthoracic echocardiography revealed a normofunctional aortic bioprosthesis with preserved left ventricular ejection fraction.

Discussion

Acute coronary occlusion is a rare and life-threating complication of TAVI that may be prevented with accurate procedure planning. Pre-procedural computed tomography angiography is essential for a comprehensive patient evaluation, allowing appropriate valve selection, a key factor for successful management. Self-expandable valve retrieval with snare technique can be an appropriate strategy for the management of this complication. This case highlights the importance of performing these procedures in highly experienced centres and with fully equipped catheterization laboratories to allow timely interventions when facing unexpected events.
Insights into the domestication of avocado and potential genetic contributors to heterodichogamy
Authors: Solares Edwin , Morales-Cruz Abraham , Balderas Rosa Figueroa , Focht Eric , Ashworth Vanessa E T M , Wyant Skylar , Minio Andrea , Cantu Dario , Arpaia Mary Lu , Gaut Brandon S
Published: December 2022

The domestication history of the avocado (Persea americana) remains unclear. We created a reference genome from the Gwen varietal, which is closely related to the economically dominant Hass varietal. Our genome assembly had an N50 of 3.37 megabases, a BUSCO score of 91%, and was scaffolded with a genetic map, producing 12 pseudo-chromosomes with 49,450 genes. We used the Gwen genome as a reference to investigate population genomics, based on a sample of 34 resequenced accessions that represented the 3 botanical groups of P. americana. Our analyses were consistent with 3 separate domestication events; we estimated that the Mexican group diverged from the Lowland (formerly known as “West Indian”) and Guatemalan groups >1 million years ago. We also identified putative targets of selective sweeps in domestication events; within the Guatemalan group, putative candidate genes were enriched for fruit development and ripening. We also investigated divergence between heterodichogamous flowering types, providing preliminary evidence for potential candidate genes involved in pollination and floral development.
Mapping schistosomiasis risk in Southeast Asia: a systematic review and geospatial analysis
Authors: Luo Can , Wang Yan , Su Qing , Zhu Jie , Tang Shijing , Bergquist Robert , Zhang Zhijie , Hu Yi
Published: December 2022

Background

Schistosomiasis is a water-borne parasitic disease estimated to have infected >140 million people globally in 2019, mostly in sub-Saharan Africa. Within the goal of eliminating schistosomiasis as a public health problem by 2030 in the World Health Organization (WHO) Roadmap for neglected tropical diseases, other regions cannot be neglected. Empirical estimates of the disease burden in Southeast Asia largely remain unavailable.

Methods

We undertook a systematic review to identify empirical survey data on schistosomiasis prevalence in Southeast Asia using the Web of Science, ScienceDirect, PubMed and the Global Atlas of Helminth Infections, from inception to 5 February 2021. We then conducted advanced Bayesian geostatistical analysis to assess the geographical distribution of infection risk at a high spatial resolution (5 × 5 km) using the prevalence, number of infected individuals and doses needed for preventive chemotherapy.

Results

We identified 494 Schistosoma japonicum surveys in the Philippines and Indonesia, and 285 in Cambodia and Laos for S. mekongi. The latest estimates suggest that 225 [95% credible interval (CrI): 168–285] thousand in the endemic areas of Southeast Asian population were infected in 2018. The highest prevalence of schistosomiasis was 3.86% (95% CrI: 3.40–4.31) in Laos whereas the lowest was 0.29% in Cambodia (95% CrI: 0.22–0.36). The estimated number of praziquantel doses needed per year was 1.99 million (95% CrI: 1.92–2.03 million) for the entire population in endemic areas of Southeast Asia.

Conclusions

The burden of schistosomiasis remains far from the WHO goal and our estimates highlighted areas to target with strengthened interventions against schistosomiasis.
A constructive low-regularity integrator for the one-dimensional cubic nonlinear Schrödinger equation under Neumann boundary condition
Authors: Bai Genming , Li Buyang , Wu Yifei
Published: December 2022

A new harmonic analysis technique using the Littlewood–Paley dyadic decomposition is developed for constructing low-regularity integrators for the one-dimensional cubic nonlinear Schrödinger equation in a bounded domain under Neumann boundary condition, when the frequency analysis based on the Fourier series cannot be used. In particular, a low-regularity integrator is constructively designed through the consistency analysis by the Littlewood–Paley decomposition of the solution, in order to have almost first-order convergence (up to a logarithmic factor) in the $L^{2}$ norm for $H^{1}$ initial data. A spectral method in space, using fast Fourier transforms with $\mathcal{O}(N\ln N)$ operations at every time level, is constructed without requiring any Courant-Friedrichs-Lewy (CFL) condition, where $N$ is the degrees of freedom in the spatial discretization. The proposed fully discrete method is proved to have an $L^{2}$-norm error bound of $\mathcal{O}(\tau [\ln (1/\tau )]^{2}+ N^{-1})$ for $H^{1}$ initial data, where $\tau $ is the time-step size.
Iranian Refugee Entrepreneurship and Inclusion in the Netherlands
Authors: Khademi Samaneh , Essers Caroline , van Nieuwkerk Karin
Published: December 2022

Numerous studies have demonstrated the importance of entrepreneurship for migrants’ integration. Nonetheless, the impact of entrepreneurship on refugees’ inclusion and sense of belonging has been largely overlooked. This article explores how entrepreneurship contributes to the inclusion of Iranian refugee entrepreneurs, considering the different aspects of a refugee’s identity components such as ethnicity, age, class, gender, and religion. The life stories of 14 Iranian refugee entrepreneurs, who immigrated to the Netherlands in the 1980s and 1990s are analysed. We illustrate how different dimensions of their identity shape entrepreneurial motivations, resources, and entrepreneurial strategies. The results show that intersecting identity components impact Iranian refugee entrepreneurs’ sense of belonging. Notwithstanding the diverse ways in which individuals experience belonging, our study identifies three particular modes of belonging: hybrid, cosmopolitan, and transnational belonging. Drawing on interviews with individual refugee entrepreneurs, we conclude that entrepreneurship is a vehicle for greater acceptance and inclusion within the host society. Our study points to an urgent need to go beyond the integration paradigm by applying the concept of inclusion. The notion of inclusion enables us to gain a deeper understanding of refugees’ position in the labour market and the receiving society more broadly.