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In order to study the properties of composite preservation paper containing antagonistic fungi and the effect of the composite preservation paper on the physiological quality and preservation quality of Gala apples at room temperature, and at the same time to solve the limitations of the antagonistic fungi in the application of difficult to germinate, subject to the influence of the environment, etc., this study used Pichia membranaefaciens as the antagonistic fungi, added to the mixture of 1.16% gelatin and 2% trehalose solution, and combined with a paper-based material to prepare a composite preservation paper containing antagonistic fungi. The structure was characterized, and the physical properties and thermal stability performance of the composite preservation paper were measured. Effects of composite preservation on the natural disease incidence of Gala apples, spot diameter, weight loss, hardness, browning degree, reducing sugar, titratable acid, vitamin C and soluble solids content were analyzed to comprehensively evaluate the preservation effect of the composite preservation paper on Gala apples. Results showed that the composite preservation liquid containing antagonistic fungi caused the surface of Alternaria spp. spores to crumple and deform, and the morphology was destroyed. The composite preservation liquid containing antagonistic fungi at a concentration of 108 CFU/mL was tightly combined with the paper-based material. The water absorption rate of the composite preservation paper was 768.94%±38.05%, which was at a high level. The thickness of the composite preservation paper was 0.232±0.008 mm, the tensile strength was 13.88±0.59 N/mm2, and the percentage of breaking elongation was 6.33%±0.58%, indicating that it had good physical properties. There was a major mass loss in the range of 320~450 ℃, and the residual rate was 5.31% at 800 ℃, with good thermal stability. In vivo application showed that the composite preservation paper could effectively delay the expansion of spots in inoculated fruits, reduce the weight loss rate and browning degree of fruits and maintain the hardness of fruits, delay the reduction of vitamin C, reducing sugar and soluble solids content of fruits, maintain the good organoleptic and physiological qualities of fruits, and prolong the storage time. The composite preservation paper has good physical properties and thermal stability, and maintains the storage quality of Gala apples after harvesting, which not only provides new ideas for antagonistic yeast inhibition and preservation, but also provides a reference for the development of new biological preservation paper and preservation application.

High-quality scientific research papers need the support of correct and rigorous statistical methods. However, many papers in transfusion medicine research have problems with the improper use of statistical methods. This paper starts from the transfusion medicine related papers published in China in recent years, summarizes and analyzes common problems in the use of statistics from the aspects of research data type description, statistical method selection, statistical result interpretation and statistical content writing, and discusses possible solutions to provide certain references for the writing of research papers in transfusion medicine.

【Objective】GRAS transcription factors play an important regulatory role in plant defense response, root development, meristem formation, gibberellin (GA) signaling and optical signal transduction. Members of the GRAS gene family in paper mulberry were identified and their expression patterns in stem tissues were analyzed, which could provide a reference for studying the lignification and development of paper mulberry stems.【Method】HMM was used to identify GRAS family genes in the whole genome of paper mulberry, and the expression patterns of GRAS genes in paper mulberry stem tissues (T1-T3) with different lignification degrees were analyzed through bioinformatics methods and RNA-Seq data.【Result】A total of 43 members of the GRAS family from the genome of paper mulberry was identified, and they were named according to their chromosome distribution.74% of BpGRAS had no introns, and 23% of BpGRAS contained only 1 to 2 introns. Most BpGRAS proteins were acidic amino acids, unstable proteins, and hydrophilic proteins. The secondary structure was dominated by irregular curls and alpha helices. Phylogenetic and protein conserved structure analysis were carried out together with Arabidopsis GRAS protein. The results showed that the 43 GRAS members of paper mulberry were divided into 9 categories and had high homology with Arabidopsis GRAS protein. The analysis of cis-acting elements showed that this family may have potential functions in the related biological processes of plant photoreaction, response to adversity stress, and regulation of plant-derived hormones. Expression analysis based on RNA-Seq showed that BpGRAS6 and BpGRAS11 were continuously significantly up-regulated in T1-T3, and BpGRAS1, BpGRAS15, BpGRAS20, BpGRAS23, and BpGRAS29 were continuously significantly down-regulated in T1-T3.【Conclusion】In this study, 43 members of the GRAS gene family were identified from the genome of paper mulberry. It was hypothesized that BpGRAS6, BpGRAS11, BpGRAS1, BpGRAS15, BpGRAS20, BpGRAS23, and BpGRAS29 may play a role in the formation of the xylem of paper mulberry stems. They can be used as candidate genes to study the regulatory mechanism of paper mulberry lignification.

The standardization, transparency, and completeness of research papers in animal experimentation and comparative medicine research are crucial for ensuring the credibility, reproducibility, and clinical applicability of research findings. Internationally recognized guidelines, such as the ARRIVE guidelines, serve to standardize animal experimentation and reporting. In China, there is already a comprehensive framework of regulations and standards governing laboratory animal research. However, the practical guidance in these documents remains insufficient to effectively guide Chinese researchers in writing and publishing in vivo animal research papers. To address this gap, the Editorial Board of Laboratory Animals and Comparative Medicine has developed a checklist of publication standards tailored for Chinese scholars, informed by the ARRIVE 2.0 guidelines and Chinese regulations and standards. This checklist is applicable for authors to self-check during manuscript preparation and submission, for peer experts during the review process, for journal editors in pre-publication verification, and for readers to evaluate published works. It aims to effectively promote the standardization and high-quality development of laboratory animal and comparative medicine research in China.

To meet the design requirements of multi-band and miniaturization antennas in mobile communication system， combined with the structural advantages of metamaterials， a 2D/3D tunable dual-band paper-based metamaterial antenna was designed based on origami technique. In order to illustrate the characteristics of the paper-based antenna， such as easy processing， low cost， and easy carrying， prototype antennas were fabricated by coating conductive silver on different paper-based materials. The simulation and measured results show that the antenna can operate at 2.45 GHz and 1.40 GHz in 2D and 3D states respectively， and the operating frequency band can be controlled by adjusting the folding angle of the inner ring. In addition， the radiation patterns of 2D and 3D antennas were studied respectively. The main radiation direction of the 2D antenna is perpendicular to the plane of the antenna， while the main radiation direction of the 3D antenna is controlled by the folding angle of the inner ring. The paper-based metamaterial antenna provides new ideas for antenna design to achieve switchable operating frequency bands and has a wide application in portable mobile terminal and multi-band communication.

The development of pesticides has significantly advanced global agricultural production, but the ensuing problem of pesticide residues poses a severe threat to human health. So, there is an urgent need to establish a rapid, accurate, sensitive, cost-effective and on-site method for large-scale detection of pesticide residues. Electrochemical paper-based analytical devices (ePADs) represents a highly sensitive and portable microanalysis system, which uses paper as a substrate and relies on a capillary force to drive the fluid for the separation and detection of samples. The diversity of pesticides and agricultural products and the complexity of matrices impose high requirements on the sample preparation procedure. This article summarizes the preparation process of ePADs from the aspects of paper selection, the establishment of hydrophilic and hydrophobic channels, the integration of separation zones, and electrode printing. Subsequently, this paper establishes the relationship between pesticide detection and chip preparation based on the mechanism of electrochemical detection of pesticides. Finally, it discusses the advantages, challenges and future prospects of ePADs with a view to providing theoretical reference for enhanced application of ePADs in the field of pesticide residue detection.

Partial discharge at the oil-paper interface is one of the main reasons for the failure of oil-paper insulation in oil-immersed transformers. In this article, based on the numerical model of multi-branching streamer discharge, a multi-branching streamer discharge model in oil-paper insulation system is constructed by further considering the charge transport characteristics of oil-paper interface. The surface discharge characteristics under the influence of the dielectric constant ratio between natural ester insulating oil and insulating paper, and the spacing between needle electrode and paperboard are studied by finite element method, respectively. The results show that the distance between the needle electrode and the paperboard, and the dielectric constant ratio of insulating oil and insulating paper both significantly affect the streamer branching. The smaller the clearance between the needle electrode and paper-board is, the more serious the inhibition of streamer branches at the oil-paper interface is, which resulting in the streamers near the oil-paper interface are more significant effect on the propagation of the z-axis streamer. When the dielectric constant of the insulating oil is larger than that of the paperboard, the development and branching of the streamer in the oil will be more significant. On the contrary, the streamer is more likely to develop along the surface of the paperboard and accumulate charge at the oil-paper interface.

目的 分析脑血管病领域撤稿论文特征，为脑血管病领域论文质量控制提供基础数据。 方法 通过关键词检索和筛选撤稿观察数据库，形成脑血管病领域被撤稿论文分析数据集，参考既往文献和政策文件对撤稿原因进行分类；通过Web of Science查询被撤稿论文的引用情况；按照文章类型、发表和撤稿时间、发表期刊及出版商、被引用情况、国家/地区分布及国际合作情况、撤稿时滞、撤稿原因及学术不端相关原因对被撤稿论文进行归类和分析。 结果 本研究共纳入386篇被撤稿论文，结果显示：被撤稿论文以研究性论文为主，共计334篇（86.53%）；撤稿时间集中在2021—2024年的论文有273篇（70.73%）；涉及撤稿期刊151种，出版商46个，撤稿数量≥10篇的期刊有5种，撤稿数量排名前9的出版商撤稿数量共计286篇（74.09%）；涉及撤稿国家/地区31个，其中撤稿数量≥10篇的国家有3个，分别为中国、日本和美国。被撤稿文章的平均撤稿时滞为1218.09 d，中位撤稿时滞为609.50（338.25～1517.00）d；平均被引次数为19.61次，中位被引用次数为8.00（2.00～24.75）次。撤稿原因分析显示，因“学术不端”被撤稿论文最多，共计295篇（76.42%）；其次是“不可重复”和“调查”，分别为242篇（62.69%）和232篇（60.10%）。295篇因“学术不端”被撤稿论文中，“同行评议问题”和“论文工厂”是最主要的撤稿原因，分别为129篇（43.73%）和110篇（37.29%）。撤稿原因分析还显示被撤稿论文涉及79种具体撤稿原因，其中“期刊/出版商调查”是出现频率最高的原因，涉及论文183篇（47.41%）。 结论 近年来脑血管病领域撤稿事件多发，被撤稿论文中学术不端问题形势严峻，因此脑血管病领域研究需重视科研诚信问题。 Abstract: Objective To analyze the characteristics of retracted papers in the field of cerebrovascular diseases and provide foundational data for the quality control of publications in this field. Methods By keyword search and screening the “Retraction Watch Database”, a dataset of retracted papers in the field of cerebrovascular diseases was established. The reasons for retraction were classified according to previous publications and policy documents. The citations of the retracted papers were searched through the Web of Science. The retracted papers were classified and analyzed based on article types, publication and retraction date, publication journals and publishers, citation status, national/regional distribution and international collaborations, retraction time lag, retraction reasons, and scientific misconduct-related reasons. Results A total of 386 retracted papers were included in this study. The results showed that retracted papers were mainly research articles, totaling 334 (86.53%). There were 273 papers (70.73%) hat were retracted between 2021 and 2024. A total of 151 journals and 46 publishers were involved in these retractions, with five journals having a retraction count of≥10 articles. The number of retractions by the top nine publishers totaled 286 (74.09%). The retractions involved 31 countries/regions, with three countries having a retraction count of≥10 articles, namely China, Japan, and the United States. The average retraction time lag was 1218.09 days, median retraction time lag was 609.50 (338.25-1517.00) d. The average citation count was 19.61 times, median citation count was 8.00 (2.00-24.75) times. The analysis of retraction reasons revealed that “scientific misconduct” was the most common reason, with 295 papers (76.42%). It was followed by “non-reproducibility” and “investigation”, with 242 papers (62.69%) and 232 papers (60.10%), respectively. Among the 295 papers retracted for “scientific misconduct”, “problems with peer review” and “paper mills” were the primary reasons, with 129 papers (43.73%) and 110 papers (37.29%), respectively. The analysis of retraction reasons also showed that the retracted papers involved 79 specific reasons, with “journal/publisher investigation” being the most frequent reason, involving 183 papers (47.41%). Conclusions In recent years, a large number of retractions occurred in the field of cerebrovascular diseases. The situation of scientific misconduct in the retracted papers is serious. Therefore, research in the field of cerebrovascular diseases should pay attention to the issue of scientific integrity.

Multilayer paper-based cell culture, as an in vitro three-dimensional (3D) cell culture method, has been frequently used to research drug bioavailability, therapeutic efficacy, and dose-limiting toxicity in malignant tumors. This paper proposes a heterogenous multilayer paper stacking co-culture system to establish a model of natural killer (NK) cells moving through the endothelium layer and attacking tumor spheroids. This system consists of three layers: a bottom tumor-spheroid layer, a middle invasion layer, and a top endothelium layer. NK-92 cells were placed in the supernatant on top of the three layers. After two days of co-culture, the attack of tumor spheroids by NK cells was observed. We additionally examined the infiltration of NK-92 cells within the tumor spheroids at different Z -axis depths using a confocal microscope, and the results suggested that the system successfully realizes NK cells traveling cross the endothelium layer to form tumor-infiltrating NK cells (TINKs). The potential application of multilayer paper for co-culture models involving cancer cells and immune cells holds great promise for exploring the interaction dynamics of these two cell types.

Objective To comprehensively analyze the influencing factors of the blood plate paper bridge method for H antigen induction and identification, and to investigate its mechanism in order to promote the application of this method in Salmonella serotyping. Methods The experimental conditions of the blood plate paper bridge method for Salmonella serotyping were optimized by comparing the effects of different paper bridge materials on the induction and identification of H antigen, scanning the surface of different paper bridge materials by scanning electron microscope to explore the mechanism of the effects, and combining the factors of environmental humidity and saline dosage. The optimized method was compared with the simple plate method of GB 4789.4 standard for serotyping 40 strains of Salmonella. Results The matte surface of CN110 and CN95 nitrocellulose membranes had similar bridging effect with ordinary filter paper, and the difference was not statistically significant (P>0.05), while the effect of filter membrane was significantly lower than that of ordinary filter paper (P< 0.05). Salmonella spread better at higher humidity, and there was a significant difference between the results at 80% humidity compared with those of the 50% and 20% groups (P<0.0167). The spreading effect was significantly improved with increasing amount of saline (P<0.001), and the optimal amount was 15 µL. Forty foodborne Salmonella strains were identified using the two methods, and the method in this study was able to accurately identify Salmonella serotypes in one go, whereas the simple plate method required one to three inductions. Conclusion The blood plate paper bridge method optimized in this study is easy to operate and has a significant induction effect, which is suitable for the identification of Salmonella serotypes. This method can be used as an effective complement to Salmonella serotyping methods to improve the efficiency and accuracy of foodborne disease traceability. [ABSTRACT FROM AUTHOR]

Oil-immersed power transformer is an important part of power grid, and its reliable operation plays a vital role in pomler system security. Aiming at the problem that the insulation state of transformer cannot be assessed quantitatively after long-term operation, the accelerated aging and damp tests of oil-paper insulation model are carried out in this paper. The influence of aging and damp of oil-paper insulation on its recovery voltage curves is explored. The particle swarm optimization (PSO) is used to improve the parameter prediction method of extreme learning machine (ELM), which realizes the quantitative assessment of aging and moisture of oil-paper insulation based on the characteristic parameters of the recovery voltage curve. By comparing the physical and chemical performance analysis of oil-paper insulation models, it is shown that the prediction accuracy of PSO-ELM method is much higher than that of traditional ELM method. The absolute error range for predicting the moisture content of oil-paper insulation the degree of polymerization (DP) of pressboard is less than ±0.4% or ±30, respectively.

Ultra high frequency (UHF) partial discharge (PD) detection is a common method for transformer oil-paper insulation defect location. However, the accuracy of PD positioning in practical application is easily affected by noise and sensor layout. In order to ensure the effectiveness of PD positioning detection of transformer oil-paper insulation defect, an UHF PD positioning detection platform for oil-paper insulation defects is established. Based on the conventional K-means method, a modified clustering demarcation PD anti-interference positioning method is proposed, which effectively reduces the positioning error. Aiming at the problem of sample clustering demarcation aliasing, when the optimal correction coefficient L is 1.1, the UHF PD positioning error can be reduced to less than 0.1 m, which verifies the effectiveness of the proposed method. Finally, the variation law of positioning error of different sensor layout is analyzed, and the optimal layout scheme of UHF sensor for transformer oil-paper insulation defect detection is proposed, which can provide reference for the layout and positioning of transformer on-line monitoring sensor.

A new method was proposed for point-of-care testing (POCT) of immunosuppressants in blood using thin-layer paper spray ionization and a miniature mass spectrometer. The aluminum thin-layer plate was used as paper spray substrate, and cut into an equilateral triangle. Aliquots of 10 μL blood sample were loaded on the aluminum thin-layer plate, and then 20 μL methanol was dropped as elution/spray solvent. The tip of the triangular plate was placed 1.0 cm in front of the discontinuous atmospheric pressure interface (DAPI) of the miniature mass spectrometer. When the spray voltage was applied, the sample was eluted from the triangular plate and formed paper spray ionization at the tip. Coupled with the miniature mass spectrometer, five immunosuppressants were detected under negative ion mode. The precursor ions ［M-H］- of tacrolimus, sirolimus, everolimus, ciclosporin A, and mycophenolic acid are m/z 802.6, 912.6, 957.1, 1 200.8, 319.1, and product ions are m/z 560.2 and 604.3, m/z 590.3 and 321.2, m/z 590.3 and 365.2, m/z 1 088.8, m/z 287.4 and 275.1, respectively. Based on the observed signal-to-noise ratio (S/N) of the most intense tandem mass spectrometry (MS/MS) fragment peaks and using the S/N=3 and 10 as the criteria, the limits of detection (LODs) and quantitation (LOQs) are estimated to be 0.5-5 mg/L and 1-10 mg/L, respectively. The internal standard method was used for quantitative analysis, and indapamide was used as the internal standard compound. Sufficient linearity for each analyte is obtained with the correlation coefficients (r) greater than 0.99. The proposed method displays good recoveries in the range of 91.0%-114.3% with the relative standard deviations (RSDs) less than 8.4%. Moreover, the developed method was used for the analysis of blood samples, which spiked with tacrolimus, sirolimus, everolimus, cyclosporine A and mycophenolic acid at the concentration of 100 mg/L. The analytical results demonstrated the consistency between the proposed method and the traditional liquid chromatography-mass spectrometry (LC-MS) method. The entire analysis procedure can be completed within 1 min. The proposed method is simple, fast, accurate, efficient, and suitable for POCT of immunosuppressants in blood.

Objective To establish a paper-free system of the total whole blood donation flow in constructing intelligent blood stations, and build digitalized whole blood donation system for practice. Methods A paper-free whole blood collection system was constructed through information process reforming, system frame designing and data network transportation constructing, and was applied in various blood donation scenario. Results Fixed blood collection sites carried out 49 063 donations via paper-free information system from November 2022 to July 2023, and 24 822 donations( group blood donation) were conducted via paper-free system from April to July 2022. Compared with the traditional paper-based model, paper-free system is safer, more standardized and more convenient, effectively enhancing the experience of blood donors. Conclusion The construction of paper-free whole blood collection system effectively enhances the experience of blood donors, improves the safety, accuracy, traceability of the data, and has good social value and economic value, which is worth popularizing.

In the era of informatization and digitization, the rapid increase in the number of scientific papers has given rise to various challenges, such as lengthy articles, difficulty in information extraction and high time costs associated with reading.Literature reading challenges for researchers are increasingly tedious and time-consuming.By utilizing the language models, the assited reading system of scientific papers has been designed to address these challenges.By adopting machine reading comprehension technology as the core, the system parses scientific texts and offers some common questions to achieve automated response capabilities.By fully utilizing the pre-trained language model PERT, the system enhances its capabilities in semantic understanding and information extraction, effectively resolving various challenges in reading scientific papers and helping readers improve the efficiency of scientific literature review.

Copyright of China Pulp & Paper is the property of China Pulp & Paper Magazines Publisher and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Oil-paper is an important component of oil-immersed power transformers, and its insulation reliability is crucial for maintaining transformer stable operation. In this paper, FDS tests on aged and damp oil-paper insulation samples are conducted, so as to obtain the relationship between the frequency domain dielectric response characteristics of oil-paper insulation and its insulation state. Based on the extended Debye model, an improved NSGA algorithm assisted recognition method for oil-paper insulation broadband dielectric characteristic parameters is proposed. The accurate extraction of the extended Debye model characteristic parameters can be achieved through the complex capacitance curve of the oil-paper insulation. The weight relationship of the characteristic parameter information entropy was considered, and the quantitative characterization equation of the model characteristic parameter and the insulation moisture content and aging was established. This method can realize the quantitative analysis of the oil-paper insulation state and provide important theoretical support for the accurate insulation state assessment of the oil-immersed power equipment.

Based on the selective quenching effect of the flavonoid rutin on the fluorescence of carbon dots prepared by asparagine pyrolysis, a method for rapid detection of rutin content in the flower buds of Sophora japonica by using chitosan-based carbon dot paper chip was developed. A filter paper was immersed in the casting solution of carbon dots and chitosan. After drying, a carbon dot chitosan film was formed on the surface of the filter paper, so that the chitosan-based carbon dot paper chip was obtained. After samples were dripped on the chip, chromogenic reaction occurred uniformly within a limited region, and pictures were taken under an ultraviolet (UV) lamp at 365 nm for analysis of the red (R), green (G), and blue (B) values of the colored spots in order to optimize the preparation conditions and detection conditions. The results showed that the optimal conditions were as follows: chitosan concentration of 20 mg/mL, carbon spot concentration of 1.0 mg/mL, 50% ethanol as sample solvent, and reaction time of 20 min. Under these conditions, the difference (ΔG) in G-value between sample and solvent spots had a linear relationship with rutin concentration (C) in the range of 4 to 120 mg/mL. Using this method, the average contents of rutin in the flower buds of S. japonica from three batches were determined to be 23.85%, 22.83% and 20.30%, the average relative standard deviations (RSDs) were 6.1%, 5.6% and 6.7%, and the recoveries were 91.27% to 107.5%, which were close to the results of high performance liquid chromatography (HPLC). The proposed method is simple and rapid, and can be used for rapid on-site determination of rutin content in the flower buds of S. japonica.

Results of academic research require publication and need to be reviewed by peers before they can contribute to the existing body of knowledge. Among the various means of publishing research findings, researchers may, according to past academic practices, first present their research results in conferences, seminars or symposiums, and then submit their results to journals for publication. Hence, the issue of “extended publication”, where conference papers are revised and submitted to journals, has gained attention in the library and information science community. This study collected public documents on the Internet and applied document analysis to examine the ethical considerations regarding such extension practice. First, this research reviewed the basic principles of research integrity and responsible behavior. Secondly, this research listed several types of violation related to research paper writing and submission, and studied the guidelines established by both domestic and foreign academic organizations, publishers, and journals. The findings of the research were used to provide specific recommendations on the best practices for extending conference papers to journal articles.

High prevalence and low control rate of hypertension have brought a significant disease burden globally. In order to improve the level of hypertension prevention and treatment, remote healthcare and digital medicine have been rapidly developed and widely used worldwide. Currently, there are no relevant regulations in China for these technologies. In 2023, the Italian Society of Arterial Hypertension issued a position statement to guide the development, validation, and clinical use of remote medicine and digital healthcare. This article will interpret this position paper, focusing on the forms of application of telemedicine and digital healthcare in managing hypertension and its related cardiovascular diseases, key research evidence, existing advantages, as well as current opportunities and challenges. The aim is to guide general practitioners in China on how to utilize these technologies in managing hypertension and related cardiovascular conditions.

BACKGROUND: Bibliometrics and visual analyses based on thematic literature are particularly important for understanding the foundation and frontiers of postmenopausal osteoporosis research. OBJECTIVE: To perform bibliometric, citation, and visualization analyses of highly cited SCI papers in postmenopausal osteoporosis research over the last 20 years. METHODS: The top 100 highly cited papers on postmenopausal osteoporosis published between 2003 and 2022 included in SCI-EXPANDED catalog of the Web of Science database were obtained for bibliometric measure and visual analysis using CiteSpace software. RESULTS AND CONCLUSION: The top 100 highly cited papers have a total of 67 377 citations in the Web of Science Core Collection, with an annual average of 49.17 citations per paper. Postmenopausal osteoporosis research primarily involves medical, engineering, biological, and multidisciplinary fields. The subcategories are dominated by endocrinology and metabolism, and medicine: internal medicine. Stable and close cooperative network relationships have been formed globally. United States, University of California System, Cummings, and Steven R are the country, research institution, and author, respectively, with the most highly-cited publications. The frontiers of postmenopausal osteoporosis research mainly include calcium and vitamin D supplementation and fracture risk, clinical studies of bisphosphonates in the treatment of postmenopausal osteoporosis, atypical femur fracture, clinical studies of new drugs and sequential treatment of postmenopausal osteoporosis, predictors of fracture risk, mid- and long-term follow-up of osteoporotic vertebral compression fractures, genetic polymorphisms and hereditary factors, formulation and updating of clinical practice guidelines for postmenopausal osteoporosis. Large cohort studies, high-quality randomized controlled trials, systematic reviews, meta-analyses, and clinical practice guidelines are the great engines that drive the development of clinical research in postmenopausal osteoporosis. We should make efforts in the above areas to improve China’s international influence in the field of osteoporosis. [ABSTRACT FROM AUTHOR]

The reaction of corrosive sulfur present in transformer oil with the copper winding results in the formation of copper sulfide (Cu2S), and this process is intimately associated with the occurrence of partial discharge (PD) phenomena in power transformers. The development process of partial discharges in oil-paper insulation under Cu2S deposition conditions and its influencing laws were investigated. A hydrodynamic drift-diffusion model and a bipolar charge-carrier transport model were combined to analyze the development of PD under cylindrical plate electrode geometries. Charge density cloud maps of PD processes in oil-paper system under Cu2S deposition in slightly inhomogeneous electric field conditions were obtained. As the applied voltage increases, the oil molecules near the column electrode were first ionized into positive ions and electrons, and then the oil molecules near the deposition begin to be ionized. An increase in the thickness of Cu2S deposits leads to an elevation in the electric field strength within the oil gap, subsequently exacerbating the discharge phenomenon and resulting in a greater local charge density. The wider deposition of Cu2S promotes the diffusion of charge along its surface. The study has revealed the physical mechanisms and operating laws underlying the PD induced by Cu2S deposition in a slightly inhomogeneous electric field, thereby providing a theoretical reference for the further development of suppression techniques for Cu2S deposition-related discharges. [ABSTRACT FROM AUTHOR]

Copyright of China Pulp & Paper is the property of China Pulp & Paper Magazines Publisher and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

To explore the microscopic mechanism of thermal stability of oil-paper insulation， a molecular model consistent with the actual oil-paper insulation is established. Through comparison with the experimental results， the effectiveness of the model is verified. With temperature as an independent variable， variation of the mechanical parameters and hydrogen bond energy of the cellulose molecular model under the action of a thermal field is investigated. The results show that parameters characterizing the mechanical properties of cellulose， such as bulk modulus （K）， Young's modulus （E）， shear modulus （G）， and Poisson's ratio （v） of the cellulose crystalline zone model are larger than those of the amorphous zone model at the same temperature， and the distribution of hydrogen bond energy remains the same. Thus， the cellulose crystalline zone is superior to the amorphous zone in mechanical properties and determines the insulation properties of cellulose insulating paper. The results of the study provide a theoretical basis and method for investigating the microscopic mechanism of thermal aging of oil-paper insulation.

In order to modify the systematic difference between the smoldering rate of cigarette paper under nonstandard atmospheric pressure and standard atmospheric pressure, four experimental samples were selected for smoldering rate in six laboratories with different atmospheric pressure (five non-standard atmospheric pressure laboratories and one approximate standard atmospheric pressure laboratory). According to the test results, the correlation was analyzed between atmospheric pressure and the smoldering rate. The correction equation was established for smoldering rate to non-standard atmospheric pressure, and the feasibility was verified. The results showed that: 1) The smoldering rate of cigarette paper was positively correlated to atmospheric pressure, R² ranged from 0.857 2 to 0.914 1, and the correlations between the smoldering rate in the four samples and atmospheric pressure all reached extremely significant level. 2) The correlation equation between the smoldering rate of cigarette paper to atmospheric pressure was rc = rm x (0.815 7 x √P0/P1 + 0.193 6); 3) The correction values of the experimental sample under non-standard atmospheric pressure was not significantly different from the smoldering rate at standard atmospheric pressure, and the maximum absolute deviation between the corrected value of the verified sample and the smoldering rate of the sample at standard atmospheric pressure was only 0.170. It showed that the correction equation could be used to correct the smoldering rate of cigarette paper under non-standard atmospheric pressure and eliminate the systematic difference between non-standard atmospheric pressure and standard atmospheric pressure. [ABSTRACT FROM AUTHOR]

Copyright of China Synthetic Fiber Industry is the property of Sinopec Baling Petrochemical Company and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

A flexible wipe paper for rapid nondestructive detection of ferbam residues on the surface of fruits and vegetables by surface-enhanced Raman scattering (SERS) was prepared using filter paper as the substate by a simple soaking method. The synthesis and storage conditions were optimized to ensure that the SERS method has excellent performance. The results showed that concentration factor of silver nanoparticles (AgNPs), soaking time in AgNP solution and drying method greatly affected the performance of the SERS wipe paper. The performance under the condition of soaking for 8 h in a 5-fold concentrate of AgNP solution was significantly better than that under other conditions. The SERS wipe paper prepared by vacuum drying had better performance that those prepared by other drying methods. After 9 days of storage at −20 ℃, the optimized substrate retained approximately 50% of the original peak value. Besides, it exhibited good sensitivity, uniformity, and repeatability. The limit of detection (LOD) for ferbam on a glass plate was 4.07 × 10-6 mg/mL, and the LOD for ferbam on the surface of spinach and nectarine were 0.043 and 0.062 mg/kg, respectively. This study provides an excellent basis for the development and utilization of SERS wipe paper.

“Lab on paper” is a paper-based microanalytical system with unique advantages such as high sensitivity, low cost, portability, and mass production, which breaks through the limitations of traditional detection technologies and shows great potential in the field of rapid on-site food detection. In this paper, the typical “labs on paper”, including chromatographic paper, chemical test chip, lateral flow assay (LFA), microfluidic paper-based analytical devices (μPADs), and synthetic biological paper, are systematically reviewed. Special emphasis is put on the application of “lab on paper” in the field of food detection. Finally, the advantages, challenges, and future prospects of paper-based analytic methods are discussed, which may provide theoretical support for better application of “lab on paper” in the field of food detection.

New paper-based microfluidic technology has been widely used in many fields due to their advantages such as easy preparation, low cost, and non-toxic environmental protection, compared with the shortcomings of other food analysis and detection techniques such as complex production method and high cost of preparation. The outline of new paper-based microfluidic technology is briefly summarized and the probes including organic molecules, nanomaterials and polymers their structural activity with regard to sensing performances along with their limit of detection are also discussed. This review is expected to assist readers for better understanding of the sensing mechanisms of various chemo and bio-probes utilized in µPADs, as well as promote their advancement in the field. The detection mechanism and its advantages in the whole detection system at the same time to get the ideal experimental results of new paper-based microfluidic technology in the food analysis of pesticide residues, pathogenic bacteria, additives, heavy metals and other substances are mainly introduced. This study would provide the theoretical basis and references for fast detection field. The future challenges and application prospects of this technology are prospected.

[Purpose/Significance] Interdisciplinary research can creatively solve complex problems in natural environment and human society through knowledge integration and penetration. With the increase of interdisciplinary research results, the evaluation of interdisciplinarity becomes increasingly necessary. How to establish an effective method for interdisciplinarity measurement and achieve a comprehensive measurement of scientific research papers is an urgent problem to be solved. [Method/Process] Based on the above background, this study takes the data of scientific research papers as the analysis source, deconstructs the interdisciplinarity of scientific research papers from multiple dimensions, constructs the feature set of interdisciplinarity of scientific research papers, and on this basis proposes the method for measuring interdisciplinarity based on the adaptive method of machine learning, and conducts a comprehensive measurement of interdisciplinarity. This study has certain positive significance for researchers to understand the interdisciplinary papers in the field. The work process is as follows: First of all, the basic concepts of interdisciplinarity are sorted out and related concepts are discriminated, and the index of interdisciplinarity of different dimensions is analyzed. Based on the connotation and characteristics of interdisciplinary research, the characteristic index of interdisciplinarity of scientific research papers is extracted from three dimensions: subject attribute, knowledge network topology and knowledge integration text content. Secondly, an interdisciplinarity measurement method based on machine learning is constructed. By analyzing information gain and feature similarity of input indexes and data in feature sets, a feature selection calculation method based on adaptive feature selection is proposed, and the accuracy of feature classification is maximized by machine learning classifier. At the same time, the feature subset that can best express the interdisciplinary is selected based on the adaptive selection of the minimum number of features, and the selected adaptive feature set is used in the calculation of the interdisciplinary of the paper, and the results of the calculation of the original feature set are analyzed comprehensively. Finally, an empirical study was carried out in the field of plant nanobiotechnology to verify the effectiveness of the index system and adaptive feature selection listed above, identify and screen papers with high interdisciplinarity in the field, measure the interdisciplinarity of papers and identify key influencing factors based on the calculation of subject attributes, knowledge network topology and knowledge integration text content features. [Results/Conclusions] The main empirical results show that, among the subject attributes, the balance degree and the difference degree have a greater effect on the interdisciplinary evaluation. The overall effect of knowledge network topology structure features is satisfactory, the distribution breadth of knowledge integration text content features has a greater effect on interdisciplinary evaluation, and the calculation effect is further improved by fitness weighted summation of each feature. The results demonstrate that the adaptive feature selection proposed in this paper can effectively screen the interdisciplinary related feature indexes, improve the reliability of the results, and achieve a comprehensive and in-depth measurement of the interdisciplinary of scientific research papers. This measure method avoids the subjective defects that may occur in qualitative evaluation and the problems that different measure indicators may produce contradictory results. It provides a new idea and direction for interdisciplinary measurement.

BackgroundIn recent years, the rising number of e-cigarette users among adolescents and the surging cases of lung injury related to e-cigarette use have attracted the attention of researchers in various fields.ObjectiveTo identify the research hotspots and trends of e-cigarette or vaping product use associated lung injury (EVALI) worldwide from 2013 to 2022 by bibliometric and visual analysis. MethodsWeb of Science Core Collection was selected to obtain literature related to EVALI from 2013 to 2022 across the world, statistics were calculated by country/region, institution, author, journal, cited literature, keyword, etc. CiteSpace 6.2.R1 was used for visual analysis to draw diagrams of publication trend, author cooperation network, co-citation clustering time distribution, and keyword cluster. ResultsA total of 888 EVALI-related papers published between 2013 and 2022 were retrieved. The number of publications was gradually increased, with a significant increase in 2020 and a decrease from 2021, but the number of citations was increased year by year. The most active country was the United States (631 articles). European and American countries cooperated closely and the centrality was prominent. Among the publishing institutions, the University of California system topped the list with 103 articles. Rahman I (27 articles) published the most articles and had a high degree of centrality; Goniewicz M L was the most cited author; and the network analysis diagram showed relatively weak collaboration between authors. The American Journal of Respiratory and Critical Care Medicine was the journal with the highest number of publications (94 articles). The top 5 cited articles were all cited more than 300 times. The leading high-frequency keywords of EVALI-related studies were nicotine (149 times), exposure (118 times), and oxidative stress (80 times). The cluster of key nodes in the co-citation network and the clustering time distribution diagram indicated youth e-cigarette addiction received widespread attention from society. From the top 25 keywords with the strongest bursts, the focus of research on the pathogenesis of EVALI gradually shifted from the oxidative stress damage associated with e-cigarette vapor to the oxidative effect of flavoring chemicals in the process of lung injury. The current research interests in this field were mainly the mechanisms of various chemicals in e-cigarettes and the heating elements that led to damage to the lungs. ConclusionEVALI is receiving continuous attention from researchers in government, medical institutions, and other organizations. A variety of e-cigarette ingredients such as flavoring chemicals may lead to varying degrees of cytotoxicity, inflammation, and lung damage. However, the pathophysiology of EVALI remains unclear. In the future, more Chinese scholars should be encouraged to participate in this field.

Copyright of China Synthetic Fiber Industry is the property of Sinopec Baling Petrochemical Company and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of China Pulp & Paper is the property of China Pulp & Paper Magazines Publisher and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In order to improve the application performance of polyvinyl alcohol and starch as sizing agents on the surface of paper, Paper surface sizing agents (CPSn-PVA) with different degrees of crosslinking were prepared by using y-glycidyl etheroxypropyltrimethoxyprop-ylsilane (KH560) and borax (STB) as crosslinking agents, and crosslinking modified starch (PS) and polyvinyl alcohol (PVA1799). The properties of the paper surface sizing agent were characterized by Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy and stability testing, and the effects of the addition ratio of KH560 and borax on the performance of the paper surface sizing agent and the physical properties of the paper after sizing were discussed. The experimental results show that when the addition amount of borax is 0.1 g and the addition amount of KH560 is 3 g, the tensile strength of the adhesive film can reach 25.6 MPa, and the elongation at break is 326%. At the same time, the multi crosslinked PVA1799 paper surface sizing agent showed good application performance. Compared with the original paper, the paper's folding enderance, tearing index and contact angle increased by 6700%,65.04%, and 89.7% respectively after sizing. [ABSTRACT FROM AUTHOR]

Copyright of China Pulp & Paper is the property of China Pulp & Paper Magazines Publisher and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Fruit paper is a paper-shaped snack made from fresh fruit after pulping, boiling and drying. Drying, one of the oldest methods for food preservation, removes water from fruit and extends its shelf-life for year-round consumption. The most commonly used drying methods include hot air drying, vacuum drying, freeze drying, and their combinations. The energy efficiency of drying process and the quality of fruit paper are both important to be considered in fruit pulp drying. This article updates the research status of drying technologies applied in fruit paper production, including hot air drying, freeze drying, vacuum drying, microwave drying, infrared radiation drying, and refraction window drying. In addition, the influence of the pretreatments and drying process on fruit paper's shape, texture, and nutrients are also summarized. This work aims to improve the drying efficiency of fruit paper and retain the active ingredients of fruit to the maximum extent, and to provide reference for further research on drying processing of fruit paper in food industry.

Objective: This study aimed to solve the problem of cigarette flavoring technology that the surface taste of splicing paper weakens over time. Methods: A rapid method for the simultaneous determination of two kinds of sweeteners was established based on ultra-high-performance liquid chromatography (UHPLC). The change of the content of the sweetener on the surface of the tipping paper was analyzed, and the induced migration experiment was used to analyze the migration of sweeteners. The surface porosity, air permeability and surface water absorption of aluminized splice paper were analyzed by scanning electron microscope, air permeability tester and surface water absorption tester. Results: A method for rapid determination of two kinds of sweeteners simultaneously was established by UHPLC. The results of induced migration experiment showed that the sweeteners in the tipping paper migrated from the surface to the inside of the paper gradually. The results of scanning electron microscope, air permeability tester and surface water absorption tester showed that pores distributed on the surface of the aluminized tipping paper, and the high air permeability thereby led to the surface water absorption capacity. Therefore, the sweetener migrated in the aluminized tipping paper. After 42 days of induced migration, the migration rates of acesulfame and saccharin sodium in the paper were 48.47% and 49.65%, respectively. Conclusion: The pores and cracks spreading on the surface of the aluminized tipping paper made it have high permeability and strong water absorption, and the concentration differences between the two sides of the paper resulted in a conducive migration of the sweeteners.

With the population aging in China, the prevalence and mortality rate of Alzheimer's disease (AD) have been rising in China. AD has become one of the major threats to people's health and social sustainable development. In order to support the Healthy China Initiative and promote health in China, "Chinese Alzheimer's Disease Blue Book (Simplified Edition)"(refer to as the Blue Book) was compiled by experts and scholars from the National Center for Neurological Disorders, Xuanwu Hospital, Capital Medical University; the National Center for Chronic and Noncommunicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention; the National Health Commission Capacity Building and Continuing Education Center; and the China Population and Development Research Center. The epidemiological characteristics, diagnosis and treatment status, prevention and treatment management of AD and related cognitive disorders in China were systematically reviewed in the Blue Paper, aiming to provide references for the prevention of AD, provide support for the standardized diagnosis and treatment of the disease, and provide a reference for the government to formulate relevant health policies. Specifically, the Blue Book covers the following topics of AD and related cognitive disorders: (1)epidemiology characteristics; (2)economic burden; (3)influencing factors; (4)China Brain Cognitive Health Index; (5) diagnosis status; (6)treatment status; (7)construction of national center for cognitive disorders;(8)community-based prevention and control; (9) AD patients care; (10)public health resources for prevention and control.

Copyright of China Pulp & Paper is the property of China Pulp & Paper Magazines Publisher and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Education Research (1680-6360) is the property of Angle Publishing Co., Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Central China Normal University is the property of Huazhong Normal University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Knowledge representation of scientific paper data is a problem to be solved,and how to learn the representation of paper nodes in scientific paper heterogeneous network is the core to solve this problem.This paper proposes an unsupervised cluster-level scientific paper heterogeneous graph node representation learning method(UCHL),aiming at obtaining the representation of nodes (authors,institutions,papers,etc.) in the heterogeneous graph of scientific papers.Based on the heterogeneous graph representation,this paper performs link prediction on the entire heterogeneous graph and obtains the relationship between the edges of the nodes,that is,the relationship between paper and paper.Experiments results show that the proposed method achieves excellent performance on multiple evaluation metrics on real scientific paper datasets.

In order to analyze the influence of transformer vibration on the winding oil - immersed insulation paper, the friction and wear tester UMT - 2 was used to test the such paper based on the damage phenomenon of transformer winding oil - immersed insulation paper under the influence of magnetic excitation fretting. Oil paper - oil paper friction was realized by wrapping oil - immersed insulation paper with the same thickness as the friction pair on the outer side of the upper sphere specimen. The influence of paper thickness and normal load on the wear of oil paper - oil paper friction process was determinated through an analysis of the friction coefficient collected during the test and the damage state of oil - immersed insulation paper. Results showed that under the same normal load and friction times, the number of damaged layers decreased and the friction coefficient increased with the increase of the thickness of oil - immersed insulation paper. For the oil - immersed insulation paper with the same thickness, the number of damaged layers increased and the friction coefficient decreased with the increase of friction times and normal load. The main wear mechanism of oil paper - oil paper friction was the combined action of adhesive wear, abrasive wear and delamination wear.

Copyright of China Pulp & Paper is the property of China Pulp & Paper Magazines Publisher and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The insulation performance of transformer bushings is a crucial aspect that directly affects the safe operation of equipment. To diagnose the insulation status of transformer bushings and mitigate the impact of small-sample imbalanced data on diagnostic results, a particle swarm optimization combined with back propagation neural network (PSO-BPNN) and adaptive synthetic sampling (ADASYN) method are employed to fault diagnosis of transformer bushing. Initially, historical fault data of transformer bushings are gathered, and a sample set of dissolved gases in transformer oil with distinct fault categories is established. The ADASYN algorithm is used to synthesize the minority class samples in the original data, which allowed for obtaining balanced fault data. The balanced dissolved gases in oil served as the model input, and the fault status is used as the label output to diagnose the transformer bushings using the PSO-BPNN model. To diagnose the bushings under the original sample set, the back propagation neural network (BPNN), genetic combined with back propagation neural network (G-BPNN), cuckoo search combined with back propagation neural network (CS-BPNN), and PSO-BPNN models are used. The results reveal that the PSO-BPNN model based on ADASYN balanced data exhibited the highest accuracy among the various models for fault diagnosing the insulation status of transformer bushings. This approach effectively mitigate the impact of small sample imbalanced data on diagnostic results, and provide an effective method for assessing the insulation performance of transformer bushings.

The academic journals of meteorological science and technology of China take the solicitation of review meteorological scientific and technological paper (RMSTP) as an important way to improve their core competitiveness and bibliometric evaluation indicators. Therefore, high-quality RMSTPs are favored by journals, and many scientists are also stimulated to write RMSTP. In order to advise the authors to write a successful RMSTP, this paper first introduces the four principles of the topic for RMSTP, and divides RMSTP into two types: overview type and discussion type. It highlights the importance of writing motivation and the scopes of time, space, and topic for RMSTP, and provides the suggestion about how to express them properly in the paper. Meanwhile, taking three RMSTP's published in recent years as examples, this paper focuses on the problems that should be paid attention to in the text structure and its content expression, summary writing, and literature citation of RMSTP. Finally, it points out that writing a successful RMSTP requires the author to read large number of literatures and have rich scientific research and writing experiences. In addition, the authors needs to develop themselves to have the sensitivity and insights to the scientific frontiers and development trend of certain discipline or professional field, as well as the corresponding abilities of comprehensive analysis and reviewing.