检索结果-南通市图书馆

ZnO Additive Boosts Charging speed and Cycling stability of Electrolytic Zn–Mn Batteries

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano-Micro Letters 2024年第4期16卷 293-304页

作者： Jin Wu Yang Tang Haohang Xu Guandie Ma Jinhong Jiang Changpeng Xian Maowen Xu shu‑juan Bao Hao Chen Institute for Clean Energy&Advanced Materials School of Materials and EnergySouthwest UniversityChongqing 400715People’s Republic of China

Electrolytic aqueous zinc-manganese(Zn–Mn) batteries have the advantage of high discharge voltage and high capacity due to two-electron reactions. However, the pitfall of electrolytic Zn–Mn batteries is the sluggish deposition reaction kinetics of manganese oxide during the charge process and short cycle life. We show that, incorporating ZnO electrolyte additive can form a neutral and highly viscous gel-like electrolyte and render a new form of electrolytic Zn–Mn batteries with significantly improved charging capabilities. specifically, the ZnO gel-like electrolyte activates the zinc sulfate hydroxide hydrate assisted Mn^(2+) deposition reaction and induces phase and structure change of the deposited manganese oxide(Zn_(2)Mn_(3)O_8·H_(2)O nanorods array), resulting in a significant enhancement of the charge capability and discharge efficiency. The charge capacity increases to 2.5 mAh cm^(-2) after 1 h constant-voltage charging at 2.0 V vs. Zn/Zn^(2+), and the capacity can retain for up to 2000 cycles with negligible attenuation. This research lays the foundation for the advancement of electrolytic Zn–Mn batteries with enhanced charging capability.

关键词： Electrolytic aqueous zinc-manganese batteries Electrolyte pH value ZnO electrolyte additive Fast constant-voltage charging ability

Problem-solving model guided by stimulus-organism-response theory:state of mind and coping styles of depressed mothers after cesarean delivery

在线全文

学校读者我要写书评

暂无评论

World Journal of Psychiatry 2024年第6期14卷 945-953页

作者： Rui-Fang Yuan Mei-Qin Jiang juan Li Jing-Jing Zhang Department of Gynecology and Obstetrics Jiangyin People's HospitalJiangyin 214400Jiangsu ProvinceChina Department of Gynecology The Fifth People's Hospital of WuxiWuxi 214000Jiangsu ProvinceChina Obstetrics and Gynecology Ward II Jiangnan University Affiliated HospitalWuxi 214131Jiangsu ProvinceChina

BACKGROUND The use of a problem-solving model guided by stimulus-organism-response(sOR)theory for women with postpartum depression after cesarean delivery may inform nursing interventions for women with postpartum *** To explore the state of mind and coping style of women with depression after cesarean delivery guided by sOR *** Eighty postpartum depressed women with cesarean delivery admitted to the hospital between January 2022 and October 2023 were selected and divided into two groups of 40 cases each,according to the random number table *** the control group,the observation group adopted the problem-solving nursing model under sOR *** two groups were consecutively intervened for 12 weeks,and the state of mind,coping styles,and degree of post-partum depression were analyzed at the end of the *** The Edinburgh Postnatal Depression scale and Hamilton Depression scale-24-item scores of the observation group were lower than in the control group after care,and the level of improvement in the state of mind was higher than that of the control group(Pss in the observation group after care(26.48±3.35)was higher than that in the control group(21.73±3.20),and the level of avoidance(12.04±2.68)and submission(8.14±1.15)was lower than that in the control group(15.75±2.69 and 9.95±1.20),with significant differences(PsION Adopting the problem-solving nursing model using sOR theory for postpartum depressed mothers after cesarean delivery reduced maternal depression,improved their state of mind,and coping level with illness.

关键词： stimulus-organism-response theory Problem solving model Cesarean section Postpartum depression

Development and validation of a nomogram model for predicting the risk of pre-hospital delay in patients with acute myocardial infarction

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Cardiology 2024年第2期16卷 80-91页

作者： Jiao-Yu Cao Li-Xiang Zhang Xiao-juan Zhou Department of Cardiology The First Affiliated Hospital of USTCDivision of Life Science and MedicineUniversity of Science and Technology of ChinaHefei 230001Anhui ProvinceChina

BACKGROUND Acute myocardial infarction(AMI)is a severe cardiovascular disease caused by the blockage of coronary arteries that leads to ischemic necrosis of the *** medical contact is critical for successful AMI treatment,and delays increase the risk of death for ***-hospital delay time(PDT)is a significant challenge for reducing treatment times,as identifying high-risk patients with AMI remains *** study aims to construct a risk prediction model to identify high-risk patients and develop targeted strategies for effective and prompt care,ultimately reducing PDT and improving treatment *** To construct a nomogram model for forecasting pre-hospital delay(PHD)likelihood in patients with AMI and to assess the precision of the nomogram model in predicting PHD *** A retrospective cohort design was employed to investigate predictive factors for PHD in patients with AMI diagnosed between January 2022 and september *** study included 252 patients,with 180 randomly assigned to the development group and the remaining 72 to the validation group in a 7:3 *** risk factors influencing PHD were identified in the development group,leading to the establishment of a nomogram model for predicting PHD in patients with *** model's predictive performance was evaluated using the receiver operating characteristic curve in both the development and validation *** Independent risk factors for PHD in patients with AMI included living alone,hyperlipidemia,age,diabetes mellitus,and digestive system diseases(Pstic curve analysis indicated area under the receiver operating characteristic curve values of 0.787(95%confidence interval:0.716–0.858)and 0.770(95%confidence interval:0.660-0.879)in the development and validation groups,respectively,demonstrating the model's good discriminatory *** Hosmer–Lemeshow goodness-of-fit test revealed no statistically significant disparity between the an

关键词： Pre-hospital delay Acute myocardial infarction Risk prediction Nomogram

spatial-temporal Patterns of Urban Parks’Effects on the sentiments and Their Associated Factors Based on social Media Data——a Case study in Beijing

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Geodesy and Geoinformation science 2024年第2期7卷 95-110页

作者： YUAN Yuting WANG juan WEI Yali ZHU Yanrong sHI Changsheng MENG Bin College of Applied Arts and science Beijing Union UniversityBeijing 100191China Laboratory of Urban Cultural sensing&Computing Beijing Union UniversityBeijing 100191China Beijing Guohuan Environmental Technology Co. Ltd.Tangshan 063020China

As the pivotal green space,urban parks play an important role in urban residents’daily *** can not only bring people physical health,but also can be more likely to elicit positive sentiment to those who visit ***,social media big data has provided new data sources for sentiment ***,there was limited researches that explored the connection between urban parks and individual’s ***,this study firstly employed a pre-trained language model(BERT,Bidirectional Encoder Representations from Transformers)to calculate sentiment scores based on social media ***,this study analysed the relationship between urban parks and individual’s sentiment from both spatial and temporal ***,by utilizing structural equation model(sEM),we identified 13 factors and analyzed its degree of the *** research findings are listed as below:①It confirmed that individuals generally experienced positive sentiment with high sentiment scores in the majority of urban parks;②The urban park type showed an influence on sentiment *** this study,higher sentiment scores observed in Eco-parks,comprehensive parks,and historical parks;③The urban parks level showed low impact on sentiment *** distinctions observed mainly at level-3 and level-4;④Compared to internal factors in parks,the external infrastructure surround them exerted more significant impact on sentiment *** instance,number of bus and subway stations around urban parks led to higher sentiment scores,while scenic spots and restaurants had inverse *** study provided a novel method to quantify the services of various urban parks,which can be served as inspiration for similar studies in other cities and countries,enhancing their park planning and management strategies.

关键词： urban parks sentiment analysis social media data sEM Beijing

Initiation and Kinematic Process of Debris Flow with the Existence of Terraced Fields at the sources

在线全文

学校读者我要写书评

暂无评论

Journal of Earth science 2024年第5期35卷 1613-1625页

作者： Liang Yang Yang Wang Kang Liao Longfei Zhang Aiyun Chen juan Du Faculty of Engineering China University of Geosciences China Railway siyuan survey and Design Group Co. LTD.

A debris flow, with terraced fields as the source area, broke out on June 25th, 2018 in the Xiaotuga area of Yunnan Province, China, and this kind of debris flow is rarely recorded. Two purposes in this study:(1) the influence of flow drag force on slope stability;(2) back-analyze the movement process of debris flow. First, the geological background and movement of this debris flow were described based on a field investigation. Then, drag force, calculated by the laminar flow theory, is added to the slope stability calculation model, which elaborates the initiation process of this disaster. Moreover, dynamic simulation software(DAN3D) was used to simulate the kinematic process of the debris flow with a variety of combination models. The study shows that the terrace area can quickly produce surface runoff and create a drag force under rainfall conditions, which is the essential reason for the initiation of debris flow. In addition, the use of the FVV(Frictional-Voellmy-Voellmy) model is found to provide the best performance in simulating this type of debris flow, which reveals that it lasts approximately 200 s and that the maximum velocity is 12 m/s.

关键词： debris flow initiation process kinematic process terraced fields engineering geology

Lactose-free milk powder can effectively relieve diarrhea symptoms in weaning sD rats and children

在线全文

学校读者我要写书评

暂无评论

Food science and Human Wellness 2024年第3期13卷 1494-1502页

作者： Manman Liu shiwen Han Boya Li Cheng Chen Lu Yao Jung-il Kwon juan Jin Huilian Che Beijing Advanced Innovation Center for Food Nutrition and Human Health College of Food Science and Nutritional EngineeringChina Agricultural UniversityBeijing 100083China Maeil Innovation Center Maeil Dairies Co.Ltd.Seoul 03142South Korea

Diarrhea has become the leading cause of illness and death among infants and young children in developing ***,patients with diarrhea showed damaged intestinal epithelial villi,usually accompanied by lactase *** this study,we evaluated the therapeutic effects of lactose-free milk powder on rats and children with ***-associated diarrhea(AAD)model was established by gavage with antibiotic mixture in sD rats,followed by administration of milk powder containing lactose or *** results showed that lactose-free milk powder ameliorated A AD-related diarrhea symptoms,and accelerated the recovery from *** 16s sequencing results indicated lactose-free milk powder contributed to increase theα-andβ-diversity of intestinal flora,and restore the intestinal microbiota *** conclusion,our data demonstrate that lactose-free milk powder could alleviate diarrhea by restoring gut microbiota and intestinal barrier function.

关键词： Diarrhea Lactose-free Milk powder Intestinal barrier Gut microbiota

Balanced subeulerian signed Graphs and signed Line Graphs

在线全文

学校读者我要写书评

暂无评论

Journal of Mathematical Research with Applications 2024年第1期44卷 7-17页

作者： juan LIU Hong YANG Xindong ZHANG Hongjian LAI College of Big Data statistics Guizhou University of Finance and Economics College of Mathematics and system sciences Xinjiang University Department of Mathematics West Virginia University

A signed graph s =(su, σ) has an underlying graph suand a function σ : E(su)-→{+,-}. Let E-(s) denote the set of negative edges of s. Then s is eulerian signed graph(or subeulerian signed graph, or balanced eulerian signed graph, respectively) if suis eulerian(or subeulerian, or eulerian and |E-(s)| is even, respectively). We say that s is balanced subeulerian signed graph if there exists a balanced eulerian signed graph s′ such that s′ is spanned by *** signed line graph L(s) of a signed graph s is a signed graph with the vertices of L(s) being the edges of s, where an edge eiej is in L(s) if and only if the edges ei and ej of s have a vertex in common in s such that an edge eiej in L(s) is negative if and only if both edges ei and ej are negative in s. In this paper, two families of signed graphs s and s ′ are identified, which are applied to characterize balanced subeulerian signed graphs and balanced subeulerian signed line graphs. In particular, it is proved that a signed graph s is balanced subeulerian if and only if s?s, and that a signed line graph of signed graph s is balanced subeulerian if and only if s?s ′.

关键词： signed graph signed line graph balanced eulerian balanced subeulerian

Evaluation of the clinical effects of atropine in combination with remifentanil in children undergoing surgery for acute appendicitis

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastrointestinal surgery 2024年第7期16卷 2065-2072页

作者： Yu-juan Li Yong-Yan Chen Xia-Lan Lin Wei-Zhi Zhang Department of Anesthesiology Shanxi Provincial Children’s HospitalTaiyuan 030013Shanxi ProvinceChina

BACKGROUND Acute appendicitis(AA)is the most common cause of acute abdomen in *** significantly influences the surgical treatment of AA in children,making the scientific and effective selection of anesthetics *** To assess the clinical effect of atropine(ATR)in combination with remifentanil(REMI)in children undergoing surgery for *** In total,108 cases of pediatric AA treated between May 2020 and May 2023 were selected,58 of which received ATR+REMI[research group(RG)]and 50 who received REMI[control group(CG)].Comparative analyses were conducted on the time to loss of eyelash reflex,pain resolution time,recovery time from anesthesia,incidence of adverse events(AEs;respiratory depression,hypoxemia,bradycardia,nausea and vomiting,and hypotension),intraoperative responses(head shaking,limb activity,orientation recovery,safe departure time from the operating room),hemodynamic parameters[oxygen saturation(sPO2),mean arterial pressure,heart rate,and respiratory rate],postoperative sedation score(Ramsay score),and pain level[the Face,Legs,Activity,Cry,Consolability(FLACC)Behavioral scale].REsULTs Compared with the CG,the RG showed significantly shorter time to loss of eyelash reflex,pain resolution,recovery from anesthesia,and safe departure from the operating ***,the incidence rates of overall AEs(head shaking,limb activity,etc.)were lower,and influences on intraoperative hemodynamic parameters and stress response indexes were *** Ramsay score at 30 min after extubation and the FLACC score at 60 min after extubation were significantly lower in the RG than in the *** ATR+REMI is superior to REMI alone in children undergoing AA surgery,with a lower incidence of AEs,fewer influences on hemodynamics and stress responses,and better post-anesthesia recovery.

关键词： Atropine Remifentanil Pediatric acute appendicitis surgery Clinical efficacy

Nature-inspired design of droplet-synthesized polymeric nanoelectrode for photoelectrochemical microRNA sensing within single cells

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

science Bulletin 2024年第2期69卷 159-162页

作者： si-Yuan Yu Yi-Li Liu Zheng Li Dechen Jiang Jing-juan Xu Hong-Yuan Chen Wei-Wei Zhao state Key Laboratory of Analytical Chemistry for Life science School of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China

Nanoelectrodes have been shown to be powerful tools for nanoscopic research on single entities,deepening the understanding of heterogeneity and stochastics for single molecules,nanoparticles and cells[1–3].However,despite their importance,current nanoelectrode preparations are highly restrained to flame/electrochemical etching,metal sputtering,electrochemical deposition,etc.[3],resulting in a limited range of materials(mainly gold,platinum and carbon)for potential-resolved detection of redox-active species(Table s1 online).The enrichment of preparation methods to introduce novel materials and mechanisms should prove significant for the development of nanoelectrodes.

关键词： electrode deepening restrained