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目的 通过对以神经科学集群建设为特色的三级甲等医院的神经专科能力进行评估，为国内医院的特色专科建设提供参考。 方法 从服务能力、技术能力、质量安全和服务效率4个维度建立神经外科、神经内科专科能力评估指标体系，通过优劣解距离（technique for order preference by similarity to ideal solution，TOPSIS）法纵向比较首都医科大学附属北京天坛医院神经专科2019—2023年发展趋势，并采用波士顿矩阵深入分析神经专科各亚专业建设情况。 结果 2019—2023年首都医科大学附属北京天坛医院神经专科TOPSIS综合得分指数呈上升趋势。神经外科以胶质瘤诊治为主的肿瘤专业1，在技术能力和质量安全方面得分指数最高；神经内科以脑血管病为主的亚专业，在技术能力和服务效率方面得分指数较高，以上两个亚专业在波士顿矩阵中均处于优势巩固区。 结论 2019—2023年首都医科大学附属北京天坛医院神经专科诊治能力不断提升。神经外科亚专业中，专科能力排名最高的为肿瘤专业1，诊疗技术难度较高，同时医疗质量负性事件发生率低。神经内科各亚专业中，脑血管专业诊疗技术难度高且服务高效。 Abstract: Objective To provide a reference for the development of characteristic specialties in domestic hospitals by evaluating the neurological specialty capacity of a tertiary-level class A hospital which is characterized by the construction of a neuroscience cluster. Methods An evaluation index system for the specialty capacity in the Neurosurgery and Neurology Departments was established from four dimensions: service capability, technical capability, quality and safety, and service efficiency. The trend of neurological specialty development at Beijing Tiantan Hospital, Capital Medical University from 2019 to 2023 was compared longitudinally using the technique for order preference by similarity to ideal solution (TOPSIS), and the construction of each subspecialty of neurological specialty was analyzed by the Boston matrix. Results The TOPSIS score index of the neurological specialty at Beijing Tiantan Hospital, Capital Medical University showed an upward trend from 2019 to 2023. The subspecialty of the Neurosurgery Department, named oncology specialty 1, which mainly focuses on the diagnosis and treatment of glioma, achieved the highest score index in terms of technical capability, and quality and safety. The subspecialty of the Neurology Department, which mainly focuses on cerebrovascular diseases, got a higher score index in terms of technical capability and service efficiency. Both subspecialities were located at the advantageous consolidation zone of the Boston matrix. Conclusions The diagnosis and treatment capacity of the neurological specialty of Beijing Tiantan Hospital, Capital Medical University continuously improved from 2019 to 2023. Among the subspecialties of the Neurosurgery Department, oncology specialty 1 ranked No.1 in terms of specialty capacity, with high difficulty in diagnosis and treatment techniques and low incidence of negative medical quality events. Among the subspecialties of the Neurology Department, cerebrovascular specialty has high technical difficulty in diagnosis and treatment and provides efficient services.

ＳＤＨ指针调整抖动是ＳＤＨ网的主要传输损伤之一，如何抑制它已成为研究ＳＤＨ的关键技术之一。文中提出一种新的抑制指针调整抖动的方法——数字滤波法，并分析了它的原理和实现方法，最后给出了模拟结果

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Chemistry comprehensive experiment is in the basic core position in university chemistry teaching. Combined with the our latest research results, we designed a visible light-induced synthesis of selenium-containing seven-membered medium-sized N-heterocycles comprehensive experiment. Through substrate design and preparation→visible light catalysis synthesis→structure characterisation and analysis, students are systematically trained in skills such as continuous multi-step synthetic operation, process analysis and structure analysis, so as to cultivate the systematic and comprehensive nature of students' learning. On this basis, students can fully understand the frontiers and advantages of photochemical reactions and cultivate their awareness of green chemistry. [ABSTRACT FROM AUTHOR]

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Ocean acidification,as one of global environmental problems, is considered detrimental to marine calcifiers and poses a serious threat to the survival of marine mineralized species. Shellfishes are the main species in marine aquaculture, and ocean acidification will inhibit the biomineralization process for the calcified shells, and thusly have serious impacts on the development of shellfish aquaculture. Previous studies have found that urea plays an auxiliary role in mussel shell formation, and it is speculated that urea helps mussels survive during ocean acidification. To further explore the molecular mechanism through which urea has a positive effect on mussel’s tolerance to ocean acidification, transcriptomic strategies were used to analyze the changes in gene expression levels of mussel’s mantle tissues induced by urea supplementation in acidified seawater. The results showed that urea supplementation reversed the transcriptome changes of mussel mantle under acidification, and inhibited autophagy, apoptosis and immune stress-related pathways activated by acidification stress. In addition, urea induced the up-regulation of the expression of some shell matrix proteins, which helped to maintain the biomineralization process of mussels under acidification conditions. Our research provided clues for understanding the mechanism of mussel tolerance to ocean acidification, as well as provided new ideas for the healthy development of shellfish aquaculture in ocean acidification. [ABSTRACT FROM AUTHOR]

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Copyright of Journal of Mechanical Strength / Jixie Qiangdu is the property of Zhengzhou Research Institute of Mechanical Engineering 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 combined method of ozone oxidation and activated carbon adsorption was used to treat phenol wastewater. The effects of the activated carbon dosage, activated carbon adsorption time, and pH value of phenol wastewater solution on the phenol simulated wastewater treatment efficiency were investigated. The results showed that under the experimental conditions of room temperature, wastewater solution pH value was 9, ozone admission time was 25 min, activated carbon dosage was 2.5 g/L, and activated carbon adsorption time was 50 min, the simulated wastewater with an initial concentration of phenol was 100. 0 mg/L after treated, the phenol removal rate was 95. 0%. [ABSTRACT FROM AUTHOR]

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In-situ chemical oxidation (ISCO) refers to the use of appropriate conveyance technology to transport oxidants into soil or aquifer, where the contaminants are converted to low- or non-toxic substances by chemical oxidation. ISCO has been widely used for the remediation of organic contaminants in soil and groundwater due to its high efficiency and cost effectiveness. Oxidant demand is an important parameter in the application of ISCO. Once injected into the contaminated soil or aquifer, the oxidant reacts not only with the target contaminants, but also with natural organic matter (NOM) and reductive minerals ( RM) such as Fe2+, Mn2+, S- and S2- in the medium. In addition, the oxidant may decompose naturally due to its own properties. If the amount of oxidant used is insufficient, the remediation of the contaminated site may not meet the project objectives and residual contaminants or reaction intermediates may be formed, resulting in a rebound of the contaminant concentration at the site. If too much oxidant is used, it would not only increase the cost of remediation, but also seriously damage the physical and chemical properties of soil, reducing the diversity of microbial communities. Therefore, accurate measurement of oxidant requirements is important to achieve good remediation performance. In previous studies, the specific meaning of terms related to oxidant demand is not consistent and they are often mixed in different studies, which would lead to ambiguity. In this review the composition and definition of oxidant demand is clarified and unified. The total oxidant demand (TOD) in ISCO is composed of pollutant oxidant demand (POD, the amount of oxidant consumed by oxidative degradation of pollutants), natural oxidant demand (NOD, the amount of oxidant consumed by natural organic matter and reducing minerals in soil or aquifer media), and decomposed oxidant (DEO, the amount of oxidant naturally decomposed due to its nature and the influence of environmental conditions). The methods for determining oxidant demand can be divided into two categories: experimental method and stoichiometric model method. The basic principle of the experimental method is to mix the treated medium sample with the oxidant in a system for a period of time, and then calculate the oxidant consumption before and after reaction to obtain the oxidant demand per unit of medium. Specifically, the experimental method can be divided into batch test, column test, push-pull test and reaction kinetics model according to the scale and dimension of the experiment. Among them, the batch test has been relatively widely used due to its excellent characteristics of simplicity and efficiency. The column test is more capable of reflecting the actual consumption of oxidant in the field medium, taking into account the transport process and interaction of oxidant in porous media. Although the push-pull test is carried out at the field scale, which can effectively overcome the error caused by the difference between laboratory conditions and field conditions, it is relatively complex to operate. Finally, the reaction kinetics model can be used to analyze the oxidant consumption in the reaction process based on experiments. This method can characterize the oxidant consumption on a longer time scale, which is of great importance for potassium permanganate or sodium persulfate oxidants with longer reaction times. The determination of oxidant demand by experimental method is affected by factors such as the initial concentration of oxidant, reaction time, solid-to-liquid ratio and mixing conditions of the reaction. To facilitate comparison of data and costing of the project, it is necessary to incorporate experimental conditions into the expression of oxidant demand. For example, the difference of the oxidant demand obtained at different times for the same sample can be as much as 37%. Therefore, the time required for the pollutant concentration to be reduced to the target limit by oxidation should be used as the oxidant demand determination time. Stoichiometric model method is the determination of the theoretical oxidant demand value by the establishment of the stoichiometric relationship model between the oxidant demand and the components in the medium. The stoichiometric model method was originally designed to explore the relationship between the total organic carbon in the medium and the oxidant demand. It was then developed to consider the oxidant demand of natural organic matter, other mineral ions and organic pollutants as a whole. Calculation results of the stoichiometric modelling method depend on the accuracy of the model and the precise determination of the content of relevant components in the medium. Both experimental method and stoichiometric model method mostly take potassium permanganate oxidant as the research object, but there is a lack of research on the demand of Fenton reagent, ozone and sodium persulfate. In particular, the DEO of more decomposable oxidants such as Fenton reagent and ozone may reach more than 50% of TOD. The existing methods still face difficulties in accurately measuring DEO, which deserves special attention. As a component of TOD that is easily overlooked, the importance of DEO needs to be further clarified and more accurate measurement methods need to be explored. In the actual project, the number of injection wells, well spacing, oxidant injection rate and other design parameters will have an important impact on the total oxidant demand, which still needs to be further investigated. The remediation of contaminated sites by ISCO is a complex project and a more scientific workflow or guideline is necessary for engineers to determine oxidant demand. [ABSTRACT FROM AUTHOR]

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Copyright of Journal of Shenzhen University Humanities & Social Sciences is the property of Journal of Shenzhen University (Humanities & Social Sciences) Editorial Office 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 Feed Research is the property of Editorial Board of Feed Research 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 Electric Power Automation Equipment / Dianli Zidonghua Shebei is the property of Electric Power Automation Equipment Press 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 Rock & Mineral Analysis is the property of Editorial Board of Rock & Mineral Analysis 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 Rock & Mineral Analysis is the property of Editorial Board of Rock & Mineral Analysis 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.)

Probiotic fermented fruit juice could improve intestinal health with better sensory attributes. The effects of fermentation conditions on flavor quality of fermented bayberry juice were compared through microbial viability and sensory evaluation. Fermentation by combined Streptococcus thermophilus (ST) and Lactobacillus acidophilus (LA) resulted in higher microbial viability and sensory evaluation scores. The fermentation conditions were optimized by orthogonal experimental design and Technique for Order Preference by Similarity to an Ideal Solution analysis (ST and LA in a mass ratio of 3:1; 0.6% (mass concentration) inoculation; fermentation time, 48 h, at 37 °C; 10% (mass concentration) added sucrose). Fermentation under these conditions decreased the anthocyanin content of the juice, maintained the total phenolic content, and slightly decreased the antioxidant capacity. Fermentation reduced aroma volatiles from 42 in fresh juice to 33, as determined by gas chromatography-mass spectrometry-olfactometry (GC-MS-O), the aldehyde content decreased and the alcohol content increased. Lactic acid fermented bayberry juice by ST and LA produced a beverage with desirable consumer attributes, combining the health benefits of fresh juice and probiotics. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Agricultural Resources & Environment / Nongye Ziyuan yu Huanjing Xuebao is the property of Journal of Agricultural Resources & Environment Editorial Board 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 Electric Machines & Control / Dianji Yu Kongzhi Xuebao is the property of Electric Machines & Control 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 degradation of phenol wastewater by ultrasound synergistic potassium ferrate was compared with that by potassium ferrate alone. The results showed that the effect of ultrasound synergistic potassium ferrate oxidation degradation of phenol wastewater was better than that of single potassium ferrate method. Under the same dosage of potassium ferrate, the phenol removal rate was more than 30%,and the compatibility of ultrasound synergistic potassium ferrate to the pH value of wastewater solution was high, in the range of pH value 6～9,the phenol removal rate reached more than 86%.Under the condition that the ultrasound synergistic potassium ferrate oxidation treatment for the phenol wastewater the optimal reaction conditions were as follows: when the dosage of potassium ferrate was 1.0 g/L, the pH value of wastewater solution was 8,the reaction time was 50 min, and the phenol removal rate was 89.8%. [ABSTRACT FROM AUTHOR]

Copyright of Practical Oncology Journal is the property of Journal of Practical Oncology Editorial Office 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 oxidation treatment of phenol wastewater by ozone・potassiimi ferrate combined was compared w让h that by ozone or potassium ferrate alone. The results showed that under the condition that the ozone alone treatment for the phenol wastewater the optimal reaction cond让ions were as follows: when the wastewater temperature was 20 °C, the pH value of wastewater solution was 9, and ozone admission time was 25 min, the phenol removal rate was 89・ 6% ・ Under the condition that the ozone-potassium ferrate combined oxidation treatment for the phenol wastewater the optimal reaction conditions were as follows: when the dosage of potassium ferrate was 0.8 g/L, the temperature of wastewater was 20 °C, the pH value of wastewater solution 9, and the reaction time 25 min, the phenol removal rate was 98. 6% ・ The combined oxidation treatment of phenol wastewater w让h ozone-potassium ferrate has better effect than that of phenol wastewater by ozone or potassium ferrate alone. [ABSTRACT FROM AUTHOR]

Copyright of Chinese Journal of Clinical Healthcare is the property of Chinese Journal of Clinical Healthcare 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.)

BACKGROUND: Carbofuran and 3-hydroxy carbofuran are a pair of typical pesticide precursors and their metabolites. Due to their high water solubility and high toxicity, they can migrate long distances through surface water or groundwater, causing harm to human health and environmental safety. OBJECTIVES: In the past, liquid-phase extraction or solid-phase extraction was usually used to extract carbofuran and 3-hydroxy carbofuran in samples, but these methods are cumbersome and time-consuming, which are not conducive to the detection of multiple samples in indoor simulation experiments. In order to realize the rapid quantification of carbofuran and 3-hydroxy carbofuran in groundwater, this paper established a small-volume liquid-liquid extraction pretreatment method for extraction, and used gas chromatography-mass spectrometry (GC-MS) for detection The factors affecting the extraction efficiency of carbofuran and 3-hydroxy carbofuran were studied. Through experiments, the recovery rates of carbofuran and 3-hydroxy carbofuran under different extractants, different pH and different ionic strength conditions were compared, and the pretreatment conditions were optimized. The results show that the recovery rate of carbofuran and 3-hydroxy carbofuran is the highest when the dichloromethane is selected as the extractant and the dosage is 1mL, the pH of the water sample is adjusted to 5, and the sodium chloride dosage is 40g/L.~98.6%, 55.0%~66.3%. The performance evaluation results show that the method precision and method accuracy meet the test requirements (relative standard deviation <10%, n=5), and the detection limits of carbofuran and 3-hydroxy carbofuran are 15.3μg/L, 10.2μg/L. This method is easy to operate, fast and consumes less solvent. Compared with the traditional liquid-liquid extraction method, this method takes about 1/8 of the former, and consumes about 2 orders of magnitude less solvent than the former, which can meet the needs of indoor simulation experiments. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Harbin Institute of Technology. Social Sciences Edition / Haerbin Gongye Daxue Xuebao. Shehui Kexue Ban is the property of Harbin Institute of Technology 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 Chinese Journal of Clinical Healthcare is the property of Chinese Journal of Clinical Healthcare 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.)