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Porous molecularly imprinted polymer (MIP) microspheres were synthesized via iniferter-suspension polymerization method, employing lenacil (LA) as the template molecule and methacrylic acid (MAA) as the functional monomer. The host–guest complexes formed using LA and MAA were characterized by hydrogen nuclear magnetic resonance and ultraviolet–visible absorption spectroscopy. The obtained results showed that the interaction between LA and MAA mainly relied on hydrogen bonding. The surface morphologies and chemical structures of the MIPs were characterized by scanning electron microscopy. MIPs were spherical in shape with a relatively regular sphericity, rough surface structure, and numerous small holes, which significantly reduced the mass transfer resistance of the template molecules and exhibited excellent recognition performance for template molecules. In addition, soil samples were pretreated with solid-phase extraction columns molecularly imprinted with LA, and analyzed by high-performance liquid chromatography. The recoveries of LA, bromacil, and terbacil were up to 89.65%, 53.17%, and 44.63%, respectively. The developed method showed a minimum detection limit of 10–50 µg·mL−1. In view of the continuous increase of public requirements for pesticide residue detection, a versatile pretreatment method was developed that is green, rapid, simple, and can be miniaturized.

Gastric tube placement is a common clinical procedure. During the catheterization process, the gastric tube may enter the trachea by mistake, presenting symptoms such as choking, dyspnea, cyanosis and so on. Occasionally, patients have atypical symptoms, which are easily ignored in clinical practice, bringing great safety risks to the operation. This paper reported a case of gastric tube misplacement into the trachea using tetracaine gel as lubricant before gastrointestinal surgery, analyzed the causes and summarized the preventive and nursing measures, and reviewed the new methods, new techniques and relatively rare complications of gastric tube placement. The lubricant with anesthetic effect should be used carefully when placing gastric tube. The application of new technology can improve the success rate of gastric tube placement. (安置胃管是常见的临床操作。在置管过程中, 胃管可能会误入气管, 表现为呛咳、呼吸困难、发绀等症状, 偶有患者症状不典型, 存在安全隐患。现报告1例应用丁卡因胶浆置管过程中胃管误入气管且无典型症状的病例, 分析原因并总结预防护理措施, 并结合文献对安置胃管的新方法、新技术及相对罕见的并发症进行总结。 安置胃管时使用带有麻醉作用的润滑剂需谨慎, 新技术的应用可提高安置胃管的成功率。)

Aiming at the requirements of rapid cooling of the burned site in early first-aid treatment of burns, our research team designed a device for cooling the wound surface of burns. To meet the purpose of reducing of wound temperature, swelling and seepage rapidly, the device which uses the principle of urea and water mixed reaction refrigeration consisted of the adsorption of shell, water storage bag, bag and cover body. The device, portable and easy to operate, can withstand high temperature UV rays. It is up to the mustard for outdoor environments lacking water sources such as field battles. At the same time, it reduces the possibility of secondary wounds caused by chemical residues in traditional cooling therapy. (本研究设计了一款烧伤用创伤面降温装置, 运用尿素与水混合反应制冷的原理, 通过吸附壳体、蓄水袋、收容袋和盖体的配合使用以达到迅速降低创面温度, 减少创面肿胀渗液等目的。该装置轻便易于携带, 能耐受高温和紫外线, 适合野战现场等缺乏水源的户外环境, 且简单易操作, 能有效避免创面二次损伤。)

ObjectiveTo determine the characteristics of human immunodeficiency virus type 1 （HIV-1） subtypes among newly confirmed HIV-1 patients in Hongkou District of Shanghai， and provide evidence for establishing HIV-1 subtype database and precise prevention and control strategy against AIDS in Hongkou District of Shanghai.MethodsA total of 119 plasma samples from newly confirmed HIV-1 patients in Hongkou District in 2016 were used to detect HIV-1 RNA pol gene by using reverse transcription PCR. HIV-1 subtypes were determined with Los Alamos 2022 HIV-1 gene database using HIV-BLAST tool， and then characterized by epidemiological data.ResultsIn the 119 samples， a total of 89 pol gene fragments were obtained， which were mainly classified as CRF07_BC （38.2%）， CRF01_AE （36.0%）， and subtype B （13.5%）. Furthermore， two new recombinant subtype CRF55_01B and two unique recombinant subtype URF_0107 were identified （2.3%）.ConclusionIn 2016， HIV-1 subtypes in Hongkou District are mainly CRF07_BC and CRF01_AE. In addition， new recombinant subtype CRF55_01B and unique recombinant subtype URF_0107 have appeared in Hongkou District. It warrants a need of enhanced surveillance.

Under the conditions of global climate change, soils have undergone more complex and frequent cycles of wetting and drying, which has had a significant impact on soil respiration. In order to explore the response of CO2 emissions from salt-affected soils to biochar (BC) at different pyrolysis temperatures under drying-rewetting conditions, an indoor microcosmic culture experiment was conducted to add maize straw BC at different pyrolysis temperatures (300°C and 600°C) to salt-affected soils to study the influence of BC at different pyrolysis temperatures on the characteristics of CO2 emissions under drying-rewetting conditions. The results indicated that the addition of BC significantly altered the CO2 emission rate from the soil, subsequently influencing the mineralization of soil organic carbon. BC produced at varying pyrolysis temperatures exhibited distinct effects on the CO2 emission rates. Specifically, BC pyrolyzed at high temperatures inhibited the mineralization of soil organic carbon, whereas BC produced at low temperatures facilitated this mineralization process. This finding will provide a theoretical and scientific foundation for assessing the carbon sequestration potential of coastal wetlands and for the development of carbon sequestration technologies.

Moderate clothes-changing person re-identification is to find the same person from different camera scenes under the premise of considering the moderate change of clothes.The implementation of existing person re-identification methods is usually based on the assumption that the pedestrian’s clothing is invariant,so they rely on clothing-related features.Then,when the above assumptions are not valid,these methods are difficult to achieve the ideal recognition performance.Considering the important characteristic that pedestrian’s shape hardly change when the change of clothes is moderate,the moderate clothes-changing person re-identification is studied.Inspired by the binocular summation in biological vision system,a self-attention siamese network is proposed in this paper.Analogous to biological binocular information acquisition process,the network takes two types of images of the same pedestrian with different clothes as two branch inputs,and then achieves summation effect with siamese architecture.Subsequently,the contrastive learning and fusion learning of multiple features are carried out to obtain the pedestrian feature representation with identity discrimination.Finally,empirical studies show that the proposed method achieves best performance at present on clothes-changing person re-identification benchmark.

Objective To assess the association of metabolic syndrome (MetS) and low-level high density lipoprotein-cholesterol (HDL-C) with the invasion of prostate cancer (PCa) in the patients after radical prostatectomy (RP). Methods We collected and analyzed the data of 232 PCa patients treated with RP for prospective multicenter clinical study.The MetS was assessed according to NCEP-ATP Ⅲ.Patients were divided into MetS group and non-MetS group.Locally advanced PCa was defined as a pT-stage≥3.ISUP Gleason grading system (GS) were used for pathological grading.Logistic regression analyses assessed the association of MetS and its components with pathological data. Results MetS was an independent risk factor for GS≥8 after RP.Low HDL-C level was associated with locally advanced PCa.The risks of adverse pathological features increased with the number of MetS components. Conclusion Low HDL-C level and 4 or more MetS components are associated with higher risk of adverse pathological features of PCa.

The power generation of distributed power generation systems in regional power grids is mainly affected by external environmental factors, and there are volatility and intermittent power generation issues. This paper establishes a relatively simple multiple linear regression prediction model to predict grid-connected photovoltaic power generation systems. The article uses a hybrid modelling method to filter more important weather forecast input variables through a step-by-step linear regression method to realize the visual calculation of power data. The research results show that the multiple linear regression equation methods proposed in the article have pervasive application value in the actual application of solar photovoltaic power consumption data.

This study aims to see how the big data analytics capability (BDAC) and its dimensions affect the absorptive capacity and autonomous R&D of high-speed railways. As well as their impact on the organization’s long-term sustainability, using the mediation of absorptive capacity and autonomy in R&D. Employees and the heads of the planning, HR, R&D, and technical departments of high-speed railways were polled for information. For data analysis, we used PLS-SEM, and then we employed mediation analysis. BDAC increases the organization’s ability to tolerate change and gives management instructions on making decisions. This study adds to the body of knowledge on absorptive capacity development and autonomy over R&D activities by investigating the role of BDAC in the long-term development of high-speed trains.

Non-destructive stress characterization is essential for gate-all-around (GAA) nanosheet (NS) transistors technology, while it is a big challenge to be realized on nanometer-sized GAA devices by using traditional Micro-Raman spectroscopy due to its light spot far exceeding the device. In this work, a non-destructive stress characterization methodology of confocal Raman spectroscopy was proposed and performed for GAANS device fabrication. Channel stress evolution along the fabrication process was successfully characterized by designing high-density NS array and analyzing the linear scanned spectra in different structures. The related mechanism of stress evolution was systematically studied by Sentaurus process simulation. Additionally, applying this methodology on detecting the bending of suspended NS after channel release process was demonstrated. Therefore, this work might provide a promising solution to realize in-line characterization of channel stress in GAA NS transistors and process monitor of NS channel integrity.

ObjectiveTo explore the influence of domestic violence on drinking and aggressive behaviors of adolescent， and to analyze the mediating role of psychological needs and moral disengagement.MethodsA cluster stratified random sampling method was adopted to select 1 280 students from 2 junior high schools and 2 high schools in Dazhou City， and all the enrolled students were assessed using Childhood Trauma Questionnaire-Short Form （CTQ-SF）， Basic Psychological Needs Scale （BPNS）， Moral Disengagement Scale （MDS） and Adolescent Health related Risky Behavior Inventory （AHRBI）. Then the relationship of domestic violence with drinking and aggressive behaviors， along with the mediating roles of psychological needs and moral disengagement were discussed through the chain mediating effect analysis.ResultsCTQ-SF score was negatively correlated with BPNS score （r=-0.160， P=0.012）， and positively correlated with MDS and AHRBI scores （r=0.330， 0.250， P0.05）， the mediation effect values of domestic violence to psychological needs， domestic violence to moral disengagement， psychological needs to moral disengagement， psychological needs to drinking and aggressive behaviors， and moral disengagement to drinking and aggression behaviors were -0.468， 0.536， -0.241， -0.412 and 0.094， respectively （P

This paper studies the relationship between the impact factor (IF) and the number of journal papers in Chinese publishing system.

The internet of things provides a convenient life for all of us. Physical devices with locational systems connected to the internet can provide navigation and recommendation services in cooperation with the Location Based Services (LBS). The nearest neighbor query is the most common query type in the LBS research area. On the other hand, due to privacy protection or inaccuracies in measurement instructions, data uncertainties are typical in the IoT environment. This uncertainty will affect the results of nearest neighbor queries. The existence of plane obstacles also brings the challenge to the spatial data query. In this paper, the obstacles and data uncertainties in continuous nearest query are studied. We also designed a pruning strategy that significantly reduced the number of objects to be calculated. In addition, we propose a concept of safe region and an algorithm to generate a safe region. We also designed an index method for saving safe regions. The experimental results show that our approach outperforms the state-of-the-art one in efficiency and scalability.

[Introduction] In order to increase the capacity of a 220 kV transmission line, conventional conductor and various heat-resistant conductors are selected to make comprehensive comparison. [Method] This article calculated the maximum operating temperature and power loss, compared effects of mechanical load and wire sag variation on tower foundation, analyzed difficulty of construction and maintenance, and calculated investment and annual cost. [Result] The results show that all selected conductors can meet the need of increasing capacity and maximum operating temperature; towers and foundations need rebuilding if using conventional conductor; mechanical load and wire sag of heat-resistant conductors meet the design conditions of original transmission line; conventional conductor and Aluminum Conductor Multi-strand Carbon Fiber Core (ACMCC Conductor) have lower annual costs and more convenience for maintenance. [Conclusion] Our work shows that ACMCC Conductor has excellent comprehensive performance and is suitable for enhancing transmission capability of transmission lines in operation without rebuilding, especially in urban or suburban areas where it is difficult to build new towers.

BACKGROUND: Low protein intake (LPI) has been suggested as a treatment for chronic kidney disease (CKD). However, protein intake is essential for bone health. METHODS: We studied the database of the National Health and Nutrition Examination Survey, 2005-2010. Basic variables, metabolic diseases, and bone density of different femoral areas were stratified into four subgroups according to different protein intake (DPI) (that is, 1.2 g/kg/day). RESULTS: Significant differences were found among all lumbar area bone mineral density (BMD) and T-scores (p 1.2 g/day/kg over L2 (relative risk (RR)=1.326, 95% confidence interval (CI)=1.062-1.656), subgroup >1.2 g/day/kg over L3 (RR = 1.31, 95%CI = 1.057-1.622), subgroup 1.2 g/day/kg over all L spines (RR = 0.333, 95%CI = 1.098-1.618). However, a higher risk of osteoporosis was observed only in the non-CKD group. There was an apparent trend of higher DPI coexisting with lower BMD and T scores in patients with CKD. For osteoporosis (reference:0.8-1.0 g/day/kg), lower (1.2 g/day/kg) was associated with higher risks in the non-CKD group, but not in the CKD group. CONCLUSIONS: In the CKD group, LPI for renal protection was safe without threatening L spine bone density and without causing a higher risk of osteoporosis.

The emergency evacuation demonstration test of transport aircraft is an important testing link through the type certification. The test involves a large number of personnel and the items, and types of airworthiness certification check are complicated. In order to formulate a more reasonable test plan, it is necessary to carry out a systematic analysis of documents related to airworthiness requirements for emergency evacuation of transport aircraft and their advisory notices. For the whole process of the aircraft emergency evacuation demonstration test, research is carried out from four aspects: pre-preparation, on-board inspection, test and post-test, test and post-test. Defining the basic process of airworthiness certification, summarizing the airworthiness certification elements and specific verification methods are necessary to support and guarantee the completing of emergency evacuation demonstration test.

[Introduction] The paper aims to reduce the intermittent, random, uncontrollable effects of DERs capacity represented by wind and solar energy, and to participate in the competition in the power market, a community-based energy Internet model is proposed. [Method] Considering a community-based energy Internet model consisting of a virtual power plant (VPP) cluster consisting of a wind farm, a photovoltaic power station, and a load, interconnecting a single VPP, and based on the balance of supply and demand within a single VPP, the surplus power game sharing through VPP clusters, and finally trading with the electricity market to achieve reverse sales. [Results] The results we obtained demonstrate that the goal of maximizing the benefits of community-based energy Internet, and adding demand response (DR) to achieve the purpose of saving electricity for users. [Conclusion] This work through the community energy Internet demonstration project, the VPP operation strategy model is proposed, and the feasibility of verifying the power generation strategy in different scenarios is established through the established benefits, which indicates the direction for the construction and transaction of the community energy Internet.

In lactating mothers, the high calcium (Ca2+) demand for milk production triggers significant bone loss1. Although oestrogen normally counteracts excessive bone resorption by promoting bone formation, this sex steroid drops precipitously during this postpartum period. Here we report that brain-derived cellular communication network factor 3 (CCN3) secreted from KISS1 neurons of the arcuate nucleus (ARCKISS1) fills this void and functions as a potent osteoanabolic factor to build bone in lactating females. We began by showing that our previously reported female-specific, dense bone phenotype2 originates from a humoral factor that promotes bone mass and acts on skeletal stem cells to increase their frequency and osteochondrogenic potential. This circulatory factor was then identified as CCN3, a brain-derived hormone from ARCKISS1 neurons that is able to stimulate mouse and human skeletal stem cell activity, increase bone remodelling and accelerate fracture repair in young and old mice of both sexes. The role of CCN3 in normal female physiology was revealed after detecting a burst of CCN3 expression in ARCKISS1 neurons coincident with lactation. After reducing CCN3 in ARCKISS1 neurons, lactating mothers lost bone and failed to sustain their progeny when challenged with a low-calcium diet. Our findings establish CCN3 as a potentially new therapeutic osteoanabolic hormone for both sexes and define a new maternal brain hormone for ensuring species survival in mammals.

Abstract Background Although huge fetal hepatic hemangiomas are rare, they can cause fatal complications. The purpose of this study is to describe the imaging features and prognosis of these tumors. Methods Imaging data were collected for 6 patients with huge fetal hepatic hemangiomas treated at our hospital. Imaging modalities included prenatal magnetic resonance imaging and ultrasound and postnatal color Doppler ultrasound and contrast-enhanced computed tomography (CT). Results Among the 93,562 fetuses of 92,126 pregnant women examined at our hospital, 6 had huge hepatic hemangiomas (incidence rate, 0.64/10,000), as confirmed via postnatal color Doppler imaging and contrast-enhanced CT. Five fetuses had solitary lesions, whereas 1 (fetus 2) had multiple lesions. Four fetuses had lesions in the right liver lobe and 1 had a lesion in the left liver lobe, and 1 (fetus 2) had lesions in both lobes. All lesions showed centripetal enhancement on postnatal contrast-enhanced CT, which was more intense peripherally. Following postnatal treatment with oral propranolol, with or without dexamethasone or interventional therapy with the medical sclerosant pingyangmycin, all lesions decreased in size, with calcification plaques appearing 6 months after treatment. Conclusions Huge hepatic hemangiomas have typical ultrasonographic features and can be diagnosed prenatally. Treatment with propranolol, with or without dexamethasone, may result in a favorable prognosis.

C12H20N8O6S2, monoclinic, P21/c (no. 14), a = 15.8571(11) Å, b = 7.6581(5) Å, c = 16.9166(12) Å, β = 113.334(1)°, V = 1886.3(2) Å3, Z = 4, Rgt(F) = 0.0317, wRref(F2) = 0.1053, T = 298 K.

The acrylate-based photopolymer consists of tetra-functional polyester acrylate (TPA), and hexanediol diacrylate (HDDA) has been successfully composited with nano barium titanate (BaTiO3) and completely cured via a digital light processor RP machine. The degradation temperature, tensile strength, hardness, resistivity, and dielectric constant of samples were characterized by Thermo Gravimetric Analyzer Hi-Res TGA2950, Universal Tensile Machine JIA701, Hardness Shore D tester, Fluke 117 multimeter, and Agilent B1500A Semiconductor Device Analyzer, respectively. The morphology changes of the samples were also investigated using the JEOL JSM-6390LV scanning electron microscopy (SEM). The results show that the improvement of degradation temperature is not obvious. Furthermore, the modulus elasticity, hardness, and dielectric constant increase as the filler loading increases up to 2 phr, but the resistivity is vice versa. Interestingly, there is an inverse correlation between dielectric constant and resistivity of photopolymer/BaTiO3 nanocomposite.

Objective To know the influencing factors of dental caries in first permanent molars among children aged 10⁃12 years old in Guangzhou, and to give references for dental caries prevention. Methods The samples were selected by stratified random sampling method. Oral health examination and questionnaires were applied to all the 18 656 children who were 5 or 6⁃grade in 149 primary schools. Results The prevalence of dental caries in first perma⁃ nent molars was 18.19%. Girls accouted for 19.96%, which was significantly higher than that of boys (16.71%) (c2 = 32.817, P < 0.001). Multiple regression analyses were used to investigate the influencing factors of dental caries in first permanent molars. After controlling school cluster and other factors, household register, gender, pit and fissure sealant, consumption of sweets and chocolates, consumption of sweet milk were influencing factors of permanent teeth caries. And household register, gender, pit and fissure sealant, consumption of sweets and chocolates were associated with mean DMFT. Conclusion school oral health education should focus on the consumption of sugars and cares should be put into the differences between urban and rural area. In addition, strengthening publicity of the sealant retention proj⁃ ect,raising public awareness, and improving sealant retention quality are necessary to ensure the anti⁃caries effect.