submitted time 2024-04-21
Abstract： brightness, full coherence, and high repetition frequency. For focusing high-repetition-rate hard X-rays, compound refractive lenses (CRLs) must withstand high heat loads, which can potentially lead to thermal damage issues. This study employed the finite element method (FEM) to analyze the thermal damage issues of high-repetition-rate CRL and optimized the allowed maximum X-ray repetition rate to reduce the thermal damage risk of the CRL. By optimizing the design, the maximum thermal tensile stress of the CRL was reduced from 1108 MPa to 74 MPa, a reduction by a factor of 15 had achieved, the occurrence of thermal damage issues were prevented.
Subjects: Medicine, Pharmacy >> Preventive Medicine and Hygienics submitted time 2024-01-17 Cooperative journals: 《中国全科医学》
Abstract： Background Mild cognitive impairment（MCI） is an age-related chronic noncommunicable disease facing a certain caregiving burden. At present，most studies focus on the caregiving burden and social support of caregivers of patients with moderate-to-severe cognitive impairment，but there are few studies on the social support and related factors of caregivers of MCI patients. Objective To explore the social support and related factors of caregivers of MCI patients，and provide evidence for feasible social support for caregivers of MCI patients. Methods A total of 102 family caregivers of patients initially diagnosed as MCI in Weifang Community Health Service Center，Pudong New Area，Shanghai from April 2020 to August 2021 were recruited. A cognitive impairment management group was established to investigate basic information，social support rate score（SSRS），positive aspects of caregiver（PAC） score and Zarit Caregiver Burden Questionnaire （ZBI） score of the caregivers of patients with MCI. The related factors of social support for the participants were analyzed. Results The average score of social support of caregivers of MCI patients was （31.26±6.87），including the average score of objective support as （7.02±2.10），subjective support as（17.93±4.62） and support utilization as（6.31±1.96）. Comparison of SSRS scores of caregivers with different marital status，monthly household income status，and understanding of MCI showed statistically significant differences（P<0.05）. Multiple linear regression analysis showed that marital status，relationship with patients，living together，and total PAC scores were the related factors of caregivers' objective support（P<0.05），while the relationship with patients，monthly family income，religious belief，and total PAC scores were factors influencing caregivers' subjective support（P<0.05）. Binary Logistic regression analysis indicated that the relationship with patients and monthly household income，awareness of MCI and total score of positive feelings were the influencing factors of social support of MCI caregivers（P<0.05）. Conclusion The total social support of family caregivers of MCI patients is low，and the distant relationship between patients and caregivers，low monthly household income，low awareness of MCI，and low positive feelings of caregivers are independent influencing factors on the social support of MCI caregivers. Caregivers should be supported in all aspects at the family，social and community levels，thus improving their happiness and also facilitating collaborative community management of MCI.
Subjects: Digital Publishing >> New Media submitted time 2023-10-08 Cooperative journals: 《中国传媒科技》
Abstract：【目的】借助多屏带来的优势，从内容生态的角度来分析中视频的效能重构以探寻中视频的发展趋势。【方法】运用文献研究法和案例分析法。【结果】得出在内容生态方面中视频对内容平台、内容作者、内容读者和内容营销四部分的效能进行重构。【结论】以西瓜视频为代表的中视频在内容平台方面重构“屏”格局，为大屏回归、大中小屏互联创造条件；在内容作者方面重构创作力量，既推出吸引优秀创作人的扶持计划又完善创作生态服务和建设；在内容读者方面重构用户消费内容和习惯，缓解厂商们的“内容饥渴症”；在内容营销方面重构营销势能，以解读式营销和场景化营销充分释放品牌营销势能。
Subjects: Digital Publishing >> New Media submitted time 2023-10-08 Cooperative journals: 《中国传媒科技》
Abstract：由于互联网发展迅速,传统媒体的新闻产生方式和传播效果受到了极大的冲击。传统媒体要提升影响力,必然要利用好新媒体。本文根据传统媒体与新媒体之间的特点与发展现状,阐明了传统媒体与新媒体之间的区别与联系,提出了改造采编流程以提高传统媒体影响力的必要性,并进一步论述了重造采编流程的方式方法。
Subjects: Nursing >> Nursing submitted time 2023-09-27
Abstract： this paper summarizes a case of sigmoid colon carcinoma with closed loops complete intestinal obstruction colonoscopy stent implantation combined surgical treatment of nursing experience, through the preoperative evaluation, intestinal preparation, psychological care, postoperative close observation of vital signs and auxiliary characteristics of traditional Chinese medicine technology treatment, patients postoperative recovery is good, without complications. For patients with sigmoid carcinoma combined with complete intestinal obstruction, intestinal stents are first to relieve obstruction, and then preoperative intestinal preparation is done to create conditions for the first operation. Combined with perioperative period and nursing content, effectively reduce complications, reduce patients' pain, and achieve significant clinical effects.
Peer Review Status:
Awaiting Review
Subjects: Nursing >> Nursing submitted time 2023-09-26
Abstract： this paper summarizes a case of sigmoid colon carcinoma with closed loops complete intestinal obstruction colonoscopy stent implantation combined surgical treatment of nursing experience, through the preoperative evaluation, intestinal preparation, psychological care, postoperative close observation of vital signs and auxiliary characteristics of traditional Chinese medicine technology treatment, patients postoperative recovery is good, without complications. For patients with sigmoid carcinoma combined with complete intestinal obstruction, intestinal stents are first to relieve obstruction, and then preoperative intestinal preparation is done to create conditions for the first operation. Combined with perioperative period and nursing content, effectively reduce complications, reduce patients' pain, and achieve significant clinical effects.
Peer Review Status:Awaiting Review
Subjects: Nursing >> Nursing submitted time 2023-06-12
Abstract： Objective To investigate pre-examination and triage managements of outpatient of the dental clinic in general hospitals during the normalization prevention and control of COVID-19 epidemic. Methods According to the relevant guidelines for epidemic prevention and control, combined with the situation of dental clinic, a series of management plans for pre-examination and triage were developed, and the changes of outpatient distribution were analyzed statistically. Results From June to August 2020, the total number of outpatients in dental clinic was 3821, among whom, 3776 (98.82%) patients had normal temperature and their epidemiological questionnaire were negative. No suspected or confirmed COVID-19 patients were appeared, and no emergency management plan was carried out in the dental clinic. Conclusion The management plan of pre-examination and triage management in dental clinic, based on epidemiological investigation and risk classification of dental treatment, was conducive to screening high-risk patients, and improve efficiency.
Peer Review Status:Awaiting Review
Subjects: Medicine, Pharmacy >> Clinical Medicine submitted time 2023-06-08 Cooperative journals: 《中国全科医学》
Abstract： Background The number of depression patients has exceeded 300 million worldwide，and its high disability rate has attracted global attention. However，the relationship between temperature-humidity index（Humidex） and depression remains to be explored. Objective To explore the relationship between Humidex of the twenty-four solar terms and depression. Methods Outpatient data of depression patients admitted to the psychology department，Mental Health Center of Jiading District from 2016-10-08 to 2019-10-07 were collected，including gender，age，time of treatment，number of outpatient visits and specialist visits. The data of daily mean temperature，relative humidity，rainfall，air pressure and mean wind speed in Jiading District from 2016-10-08 to 2019-10-07 published by Shanghai Meteorological Bureau were collected to calculate Humidex. The included patients were divided into the groups of ≤ 18 years（n=157），19-44 years（n=3 099），45-59 years（n=4 848），60-74 years（n=6 270）and ≥ 75 years（n=3 915）according to different ages. The relationship between Humidex of twenty-four solar terms and depression was estimated by using the combination of nonhomogeneous Poisson distribution and distributed-lag nonlinear model. Correlation between Humidex and meteorological variables was calculated using Pearson correlation analysis. Relative risk rates（RR）of Humidex and depression were calculated of twenty-four solar terms using median Humidex as control. Results A total of 18 289 patients with depression were included from 2016-10-08 to 2019-10-07，including 6 900 males and 11 389 females. The Lesser Cold solar term corresponded to the lowest average Humidex and highest number of depression patients，the Great Heat solar term corresponded corresponded to the highest average Humidex and lowest number of depression patients from 2016-10-08 to 2017-10-07. The Great Cold solar term corresponded to the lowest average Humidex and highest number of depression patients，the Great Heat solar term corresponded to the highest average Humidex and lowest number of depression patients from 2017-10-08 to 2018-10-07. The Great Cold solar term corresponded to the lowest average Humidex and highest number of depression patients，the Great Heat corresponded to the highest average Humidex and lowest number of depression patients from 2018-10-08 to 2019-10-07. Humidex in 24 solar terms showed a nonlinear relationship with the overall population risk of depression. The top two solar terms corresponding to Humidex of depression risk distribution for total population，male，female， ≤ 18 years，19-44 years，45-59 years，60-74 years，and ≥ 75 years were the Great Cold and Beginning of Spring solar terms，Great Heat solar term corresponded to the lowest depression risk distribution. The maximum lag effect was observed on the 10th day of the Great Cold and Beginning of Spring solar terms〔RR=1.020，95%CI（1.001，1.040）〕，and the lag effect was observed on the 8th day of Great Heat solar term and lasted to the 9th day. The lag effect was observed on the 7th day after the Great Cold and Beginning of Spring and the maximum lag effect was observed on the 9th day〔RR=1.054，95%CI（1.007，1.104）〕，which lasted until the 11th day in the 60-74 years group. The lag effect was observed on the 1st day and 8th day after the Great Heat，and lasted to the 2nd day and 10th day，respectively，with the maximum lag effect on the 10th day〔RR=0.952，95%CI（0.911，0.994）〕in male depression patients. The lag effect was observed on the 8th day after the Great Heat solar term and lasted to the 9th day in the 60-74 years group. Conclusion Humidex in the Great Cold and Beginning of Spring solar terms are risk factors for depression，and high Humidex in the Great Heat solar term is a protective factor for depression. Clinically，accurate diagnosis and treatment should be provided for different depression patients according to Humidex in different solar terms，and individualized intervention programs should be formulated.
Subjects: Medicine, Pharmacy >> Clinical Medicine submitted time 2023-04-03 Cooperative journals: 《中国全科医学》
Abstract： Background Coronary heart disease（CHD） is the leading cause of death world wide.Coronary angiography is often used as an effective approach for the diagnosis of coronary heart disease（CHD）. However，coronary angiography accounts for relatively low percentagein examination approaches due to the limitation of various conditions in primary care，and more meaningful biomarkers need to be explored to provide a basis for primary care physicians to diagnose and treat CHD. In the previous study of our research group，it is found that early growth response 3 （Egr3）gene may be a susceptibility factor in the heterogeneity of CHD pathogenesis，and there are few reports on the correlation between CHD and Egr3 gene and inflammatory biomarkers. Objective To investigate the correlation between Egr3，interleukin-6 （IL-6）and CHD，as well as their expression levels and the severity of coronary stenosis，so as to provide a favorable laboratory basis for clinical diagnosis and treatment inprimary care. Methods A total of 110 patients who admitted to the Fifth Affiliated Hospital of Xinjiang Medical University for CHD symptoms and completed coronary artery angiography （CAG） during June to December 2021 were collected and divided into the mild stenosis group（group A ≤ 52 points， n=50），moderate-severe stenosis group（group B>52 points， n=30） and control group（group C， n=30）according to the CAG results and median Gensini score（52 points）. Serum Egr3 and IL-6 levels of the included patients were measured by enzyme-linked immunosorbent assay. Results The IL-6 level in group B was higher than that in group A and group C （ P<0.05），and Egr3 expression level in the group A and group B was higher than that in group C，respectively（ P<0.05）；The area under the ROC curve of Egr3 expression level in the diagnosis of coronary heart disease was 0.648，with a sensitivity of 35.0% and specificity of 93.3%. There was positive correlation between IL-6 and Egr3 in CHD patients （ r=0.231， P<0.01）；Egr3 and IL-6 levels were positively correlated with Gensini score （ r=0.39，0.317， P<0.01）. Conclusions Egr3 has good specificity for the diagnosis of CHD，and the expression levels of Egr3 and IL-6 were positively correlated with the severity of coronary stenosis.
Subjects: Materials Science >> Materials Science (General) submitted time 2023-03-31 Cooperative journals: 《腐蚀科学与防护技术》
Abstract： The composition and structure of the residual oxide scale on hot- rolled 304 stainless steel after pickling in a bath of acid solution with different concentrations of Cl- was characterized by means of optical microscope (OM), scanning electron microscope (SEM), and X-ray photoelectron spectroscopy (XPS). The result showed that the increase of Cl- concentration in the pickling liquor may facilitate the removal of the inner dense portion of the oxide scale, which consisted mainly of Cr2O3 and Fe oxides (Fe2O3, Fe3O4, FeO) and exhibited strongly adhesive strength to the steel; the pickling liquor with 145 mg/L of Cl- is the best for effectively removing the oxide scale on hot rolled steel, as a result which facilitated the formation of a dense and compact passive film on the steel by subsequent passivation treatment.
Subjects: Psychology >> Developmental Psychology submitted time 2023-03-28 Cooperative journals: 《心理科学进展》
Abstract： Envying others is a common phenomenon in the life and workplace contexts. Although there are many records about envy in the religion, philosophy, and history books a long time ago, it is until recently that envy has been paid more and more attention by researchers of organizational science. Previous research has deepened researchers’ understanding of envy from multiple perspectives and disciplines, however, there are still some challenges that need to be resolved in organizational envy research. In order to advance research on envy in organizations, in this paper, we begin with an in-depth review about envy from three perspectives (i.e., proper perspective, subtype perspective, and unitary construct perspective), analyze the divergences between these perspectives related to nature of envy, envier’s response, and explain contradictory results. Based on the above analysis, we propose that future research should clarify the nature and measurement of envy, study the dyadic relationship between the envier and being envied, and integrate different perspectives of research on envy in organizations.
Subjects: Materials Science >> Materials Science (General) submitted time 2023-03-18 Cooperative journals: 《材料研究学报》
Abstract： Thin film of nanoporous Cu-Ti alloy as a promising electrode material for electrochemical capacitors was prepared by a two-step process, i.e. a thin film of Cu35Ti65 was firstly deposited on silicon substrate by magnetron sputtering process with Cu40Ti60 alloy as target , and then the sputtered film of Cu35Ti65 alloy was dealloyed in 0.13 mol/L HF solution for 12 h to prepair the isolated thin film of nanoporous Cu-Ti alloy. Electrodes made of the nanoporous Cu-Ti alloy exhibited excellent electrochemical capacitance performance with a specific capacitance of 8.96 mF穋m- 2 in 1 mol/L Na2SO4 solution. Furthermore, the nanoporous Cu-Ti alloy electrode showed remarkable chemical stability by cyclically charging and discharging. The excellent electrochemical performance of the nanoporous Cu-Ti alloy can be ascribed to the high specific surface area of the nanoporous structure.
Subjects: Nursing >> Nursing submitted time 2022-09-06
Abstract：
Objective To investigate the effect of case-based learning(CBL) combined with problem-based learning(PBL) in clinical teaching and practice of cerebrospinal fluid drainage for nurses. Methods According to the sequence of training, totally 17 nurses who participated in the standardized training of cerebrospinal fluid drainage were divided into two groups: 10 cases in the control group and 17 cases in the study group. The conventional teaching model was adopted in the control group, while a combined teaching methods of CBL and PBL was used in the study group. Theoretical and practical assessment results were compared between two groups. Results Nurses in the study group had higher scores of assessment on theoretical knowledge, practical skills and health education compared with those in the control group (P＜0.01). Conclusion? The combination of CBL and PBL teaching method is effective to improve the quality of teaching and standardized training of cerebrospinal fluid drainage. It is able to inspire the nurses" initiative to learn, participate and interact actively.
Subjects: Biology >> Botany >> Applied botany submitted time 2021-12-19 Cooperative journals: 《广西植物》
Abstract： To clarify the anti-melanoma active extract and material basis of Veronica didyma Tenore, CCK8 method was used to evaluate the inhibitory effects of four extracts (petroleum ether extract, ethyl acetate extract, n-butanol extract, water extract), ethanol extract and monomer compounds on the proliferation of melanoma cell lines (B16 and A375); The chemical constituents of the active fraction were systematically separated and purified by phytochemical techniques and methods. The results were as follows: (1) Ethyl acetate extract (PPNE) had better inhibitory effect on the proliferation of B16 and A375 cells than other samples, and IC50 = 0.177 mg·mL-1 (B16), IC50 = 2.826 mg·mL-1 (A375), respectively. Seven monomers were obtained from PPNE were p-hydroxybenzaldehyde (1), Picroside II (2), isoscutellarein 7 - O - (6''' - Oacetyl) - β - allopyranosyl (1'''→2'') - β - glucopyranoside (3), 3' - hydroxyl - 4' - O - methylisoscutellarein 7 - O - [6''' - O - acetyl - β - D - allopyranosyl - (1→2) - β - D - Glucopyranoside (4), 6 - O - veratroylcatalposide (5), Veronicoside (6), isoscutellarein 4' - methyl ether 7 - O - (6''' - O - acetyl) - ballopyranosyl (1'''→2'') - β - glucopyranoside (7). (2) Seven compounds were isolated from this plant for the first time, and HPLC showed that these seven compounds are the major components of PPNE. Except Compound 1, the other six monomers all have good inhibitory effect on the proliferation of melanoma cells, and the anti-melanoma activities of compounds 3, 4 and 7 are reported for the first time. Based on these results, PPNE of Veronica didyma Tenore is an anti melanoma active fraction, Iridoids (compounds 2, 5, 6) and flavonoids (compounds 3, 4, 7) may be the basis of anti melanoma activity of PPNE. The results of this study will lay scientific foundation for the rational use of Veronica didyma Tenore sresources.
Subjects: Geosciences >> Geography submitted time 2020-12-17 Cooperative journals: 《干旱区研究》
Abstract：水体氢氧稳定同位素是表征水体运移和水分转化的重要指示剂，可为地区水文循环过程的研究提供判断依据。基于稳定同位素技术，分析祁连山南坡不同水体的氢氧同位素组成特征，探讨其影响因素。结果表明：（1）祁连山南坡不同水体的氢氧稳定同位素特征存在差异，降水的稳定同位素值波动范围大于河水、地下水及冰川融水；（2）河水与地下水稳定同位素关系点接近，两者水力联系较强；（3）研究区冰川融水蒸发线方程为y=6.331x+1.756（n=8，R2=0.98），河水蒸发线方程为y=4.467x-11.716（n=75，R2=0.80），地下水蒸发线方程为y=4.889x-7.481（n=19，R2=0.76），各水体氢氧稳定同位素值之间均具有较好的线性关系，河水与地下水补给源关系较复杂；（4）冰川融水、河水与地下水氢氧稳定同位素的环境效应均不显著，而降水则具有较明显的高程效应、纬度效应和大陆效应。
Subjects: Computer Science >> Integration Theory of Computer Science submitted time 2020-09-28 Cooperative journals: 《计算机应用研究》
Abstract： Aiming at the problems that the action recognition methods based on two-stream ignore the inter-relationship between feature channels, and have large amount of redundant spatio-temporal information, this paper proposed an end-to-end action recognition model based on two-stream network with spatio-temporal attention mechanism (T-STAM) , which realized the full utilization of the key spatio-temporal information in the video. Firstly, this paper introduced the channel attention mechanism to the two-stream basic network, and calibrated the channel information by modeling the dependencies between feature channels to improve the ability of future expression. Secondly, this paper proposed a CNN-based temporal attention model to learn the attention score of each frame with fewer parameters, which can focuses on the frames with significant amplitude of motion. At the same time, it proposed a multi-spatial attention model, which calculated the attention score of each position in frame from different angles to extract motion saliency areas. Then, temporal and spatial features were fused to further enhance the feature representation of video. Finally, the fused features were input into the classification network, and the results of each stream are fused according to different weights to obtain the recognition results. The experimental results on the datasets HMDB51 and UCF101 show that T-STAM can effectively recognize actions in video.
Subjects: Geosciences >> Other Disciplines of Geosciences submitted time 2019-09-11 Cooperative journals: 《干旱区研究》
Abstract：基于内蒙古磴口荒漠生态系统国家定位观测研究站近地层(0~50 m)风沙监测塔所收集的8次沙尘暴的沙尘水平通量、垂直通量和风速风向数据，对乌兰布和沙漠东北缘中小尺度条件下的防护林内外沙尘暴过程中风况变化、沙尘分布特征以及防护林对沙尘暴的影响进行研究。结果表明：① 沙尘暴发生过程中，防护林内外风速均随高度增加呈现递增趋势，风速廓线特征遵循幂函数，防护林内外均以W、WNW、NE方向为主，但每个方向所占比例不同。② 防护林外沙尘水平通量及沙尘浓度随高度增高显著减小，其垂直分布特征均符合指数函数关系；防护林内沙尘水平通量及沙尘浓度则随着高度增高缓慢上升，其垂直分布特征均符合幂函数关系。沙尘垂直通量则均随着高度的增高明显减小，其垂直分布特征均符合幂函数关系。③ 沙尘暴经过防护林体系时，风速显著削弱，平均消减31.03%；沙尘水平通量降低298.16 g·m-2，垂直通量降低0.37 g·m-2，沙尘浓度降低22.48 g·m-2。
Subjects: Medicine, Pharmacy >> Preclinical Medicine submitted time 2017-12-27 Cooperative journals: 《南方医科大学学报》
Abstract： Objective To investigate the effect of premature rupture of the membrane (PROM) on neonatal complications in premature infants. Methods The registration information of 7684 preterm infants with gestational age <37 weeks were collected from the cooperative units in the task group between January 1, 2014 to December 31, 2014. Specially trained personnel from each cooperative units filled in the unified form in a standardized format to record the gender, gestational age, birth weight, PROM, placental abruption, antenatal corticosteroid, Apgar score, amniotic fluid pollution, and complications of the infants. The data were analyzed comparatively between the cases with PROM and those without (control). Results The preterm mortality rate was significantly lower but the incidences of ICH, NEC, ROP and BPD were significantly higher in PROM group than in the control group (P<0.05). The 95% confidence interval of the OR value was <1 for mortality, and was >1 for ICH, NEC, ROP and BPD. After adjustment for gestational age, birth weight, gender, mode of delivery, placental abruption, placenta previa, prenatal hormones, gestational diabetes mellitus (GDM), gestational period hypertension and 5-min Apgar score <7, the incidences of NEC, ROP and BPD were significantly different between the two groups (P<0.05) with 95% confidence interval of OR value >1, but the mortality rate and incidence of ICH were not significantly different between the two groups (P>0.05). Conclusion PROM is a risk factor for NEC, ROP and BPD in preterm infants, and adequate intervention of PROM can reduce the incidences of such complications as NEC, ROP and BPD in the infants.
Hits
Hits
Downloads
Comment
YES