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Homochirality in Ferroelectrochemistry

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Chinese Journal of Chemistry 2024年第10期42卷 1133-1144页

作者： Hang Peng Jun-Chao Qi Yu-Si Liu Jia-Mei Zhang Wei-Qiang Liao Ren-Gen Xiong Ordered Matter Science research center Nanchang UniversityNanchangJiangxi 330031China

What is the most favorite and original chemistry developed in your research group?We originally proposed the design principle for molecular ferroelectrics:ferroelectrochemistry,including quasi-spherical theory,the introduction of homochirality,and H/F *** changed the blind search for molecular ferroelectrics into targeted chemical design,which will develop into a new discipline.

关键词： Molecular ferroelectrics Homochirality Ferroelectricity Chemical design Point groups

Dominance of rock exposure and soil depth in leaf trait networks outweighs soil quality in karst limestone and dolomite habitats

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Forest Ecosystems 2024年第5期11卷 632-641页

作者： Min Jiao Jiawei Yan Ying Zhao Tingting Xia Kaiping Shen Yuejun He Forestry College Research Center of Forest EcologyGuizhou UniversityGuiyang550025China

Leaf trait networks(LTNs)visualize the intricate linkages reflecting plant trait-functional *** karst vegetation,developed from lithological dolomite and limestone,generally exhibits differential communities,possibly due to habitat rock exposure,soil depth,and soil physicochemical properties variations,leading to a shift from plant trait variation to functional ***,how soil and habitat quality affect the differentiation of leaf trait networks remains *** were constructed for typical dolomite and limestone habitats by analyzing twenty-one woody plant leaf traits across fifty-six forest subplots in karst *** differences between dolomite and limestone LTNs were compared using network *** network association of soil and habitat quality was analyzed using redundancy analysis(RDA),Mantle's test,and a random forest *** limestone LTN exhibited significantly higher edge density with lower diameter and average path length when compared to the dolomite *** indicates LTN differentiation,with the limestone network displaying a more compact architecture and higher connectivity than the dolomite *** specific leaf phosphorus and leaf nitrogen contents of dolomite LTN,as well as the leaf mass and leaf carbon contents of limestone LTN,significantly contributed to network degree and closeness,serving as crucial node traits regulating LTN ***,both habitat LTNs significantly correlated with soil nitrogen and phosphorus,stoichiometric ratios,pH,and organic carbon,as well as soil depth and rock exposure rates,with soil depth and rock exposure showing greater relative *** depth and rock exposure dominate trait network differentiation,with the limestone habitat exhibiting a more compact network architecture than the dolomite habitat.

关键词： Leaf trait networks Functional traits Woody plant community Karst Dolomite Limestone

Organic ferroelastic enantiomers with high Tc and large dielectric switching ratio triggered by order-disorder and displacive phase transition

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Chinese Chemical Letters 2024年第10期35卷 228-232页

作者： Zhaohong Chen Mengzhen Li Jinfei Lan Shengqian Hu Xiaogang Chen Ordered Matter Science research center Nanchang UniversityNanchang 330031China

Molecular-based ferroelastics with dielectric switching properties are highly desirable for their applications on microelectronic dielectric switches,sensors,data storage,and so ***,the current reports mostly focus on organic-inorganic hybrids containing toxic heavy metal atoms,and the relatively low phase transition temperature limits their *** this paper,low-toxic organic salt ferroelastic enantiomers(R/S)-4-fluoro-1-azabicyclo[3.2.1]octonium chloride[(R/S)-F-321]were designed and synthesized under the introducing chirality *** undergo a 432F422-type ferroelastic phase transition with a high Curie temperature(Tc)of 470 K,simultaneously exhibiting excellent dielectric switching *** addition to the ordered-disordered movement of cations,the significant displacement of anions is also responsible for such high Tc and large dielectric switching ratios,which is very rare in molecular-based switching *** work enriches the development of molecular ferroelastic switching materials and gives inspiration for the exploration of environmentally friendly high Tc organic salt ferroelastics with prominent switching performances.

关键词： Organic salt Enantiomers Ferroelastic Dielectric switching Phasetransition

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Numerical study of flow and thermal characteristics of pulsed impinging jet on a dimpled surface

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Theoretical & Applied Mechanics Letters 2024年第2期14卷 106-117页

作者： Amin Bagheri Kazem Esmailpour Morteza Heydari Renewable Energy research center Damavand BranchIslamic Azad UniversityDamavandIran

This research comprehensively investigates the flow and thermal characteristics of a pulsating impinging jet over a dimpled *** analyzes the impact of key parameters(e.g.,inlet velocity pulsation functions,pulsation frequency,amplitude,dimple pitch,dimple depth,Reynolds number)on flow patterns and heat *** computational fluid dynamics and the Re-normalization group turbulence model are employed to accurately simulate complex turbulent flow *** and average heat transfer coefficients are calculated and compared to steady impingement cases,revealing the potential benefits of pulsation for heat transfer *** study also examines how pulsation-induced flow modulation and thermal mixing affect heat transfer *** indicate that combining fluctuating flow with a dimpled surface can improve heat transfer *** summary,increasing pulsation amplitude consistently enhances heat transfer,while the effect of frequency varies between impinging and wall jet zones.

关键词： Pulsating impinging jet Dimpled surface Heat transfer enhancement Pulsation frequency and amplitude Coherent structures

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Oscillating paramagnetic Meissner effect and Berezinskii-Kosterlitz-Thouless transition in underdoped Bi2Sr2CaCu2O8+δ

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National Science Review 2024年第5期11卷 142-152页

作者： Shiyuan Wang Yijun Yu Jinxiang Hao Keyi Liang Bingke Xiang Jinjiang Zhu Yishi Lin Yinping Pan Genda Gu Kenji Watanabe Takashi Taniguchi Yang Qi Yuanbo Zhang Yihua Wang State Key Laboratory of Surface Physics and Department of Physics Fudan University Condensed Matter Physics and Materials Science Department Brookhaven National Laboratory research center for Functional Materials National Institute for Materials Science International center for Materials Nanoarchitectonics National Institute for Materials Science Shanghai research center for Quantum Sciences

Superconducting phase transitions in two dimensions lie beyond the description of the Ginzburg-Landau symmetry-breaking paradigm for three-dimensional *** are Berezinskii-KosterlitzThouless（BKT） transitions of paired-electron condensate driven by the unbinding of topological excitations,*** recently discovered monolayers of layered high-transition-temperature（TC）cuprate superconductor Bi2Sr2CaCu2O8+δ（Bi2212） meant that this 2D superconductor promised to be ideal for the study of unconventional *** inhomogeneity posed challenges for distinguishing BKT physics from charge correlations in this ***,we utilize the phase sensitivity of scanning superconducting quantum interference device microscopy susceptometry to image the local magnetic response of underdoped Bi2212 from the monolayer to the bulk throughout its phase *** monolayer segregates into domains with independent phases at elevated temperatures below *** a single domain,we find that the susceptibility oscillates with flux between diamagnetism and paramagnetism in a Fraunhofer-like pattern up to *** finite modulation period,as well as the broadening of the peaks when approaching Tc from below,suggests well-defined vortices that are increasingly screened by the dissociation of vortex-antivortex plasma through a BKT *** the multilayers,the susceptibility oscillation differs in a small temperature regime below TC,consistent with a dimensional crossover led by interlayer *** as strong evidence for BKT transition in the bulk,we observe a sharp jump in phase stiffness and paramagnetism at small fields just below *** results unify the superconducting phase transitions from the monolayer to the bulk underdoped Bi2212,and can be collectively referred to as the BKT transition with interlayer coupling.

关键词： cuprate superconductor monolayer Berezinskii-Kosterlitz-Thouless transition scanning SQUID paramagnetic Meissner effect

Relationship between mitochondrial respiratory dysfunction of blood mononuclear cells and heart failure severity

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Journal of Geriatric Cardiology 2024年第1期21卷 130-134页

作者： Viacheslav A.Korepanov Tariel A.Atabekov Tatiana Yu.Rebrova Roman E.Batalov Sergey A.Afanasiev Cardiology research Institute Tomsk National Research Medical CenterRussian Academy of SciencesTomskRussia

Chronic heart failure(CHF)is a clinical syndrome manifested by reduced pumping ability of the heart,increased pressure in heart chambers in both physical activity and at *** symptoms of this syndrome are dyspnea,undue fatigability,peripheral edema,which follow structural and functional changes of the myocardium.[1]The growing incidence of CHF,especially among elderly people,is an urgent problem for medicine in the vast majority of industrialized *** instance,in Russian Federation,CHF is diagnosed in about 7%of cardiovascular *** the same time,this indicator varies from 0.3%in young people(20-29 years old)to 70%in the older age group.[2,3].

关键词： severity instance pumping

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Perioperative complication incidence and risk factors for retroperitoneal neuroblastoma in children:analysis of 571 patients

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World Journal of Pediatrics 2024年第3期20卷 250-258页

作者： Min He Jia-Bin Cai Xuan Wu Yin-Bing Tang Jin-Yan Wang Jun-Qin Mao Ji-Jun Chen Li-Feng Zhang Zhong-Hai Guan Jie-Ni Xiong Wan-Xin Peng Jin-Hu Wang Ting Tao Pediatric Cancer research center National Clinical Research Center for Child HealthHangzhouChina Department of Surgical Oncology Children's HospitalZhejiang University School of MedicineHangzhouChina Cancer center Zhejiang UniversityNo.3333 Binsheng RodeHangzhouChina

Background Surgery plays an important role in the treatment of *** complications may impact the course of neuroblastoma *** date,comprehensive analyses of complications and risk factors have been *** Patients with retroperitoneal neuroblastoma undergoing tumor resection were retrospectively analyzed between 2014 and *** data collected included clinical characteristics,operative details,operative complications and postopera-tive *** factors for perioperative complications of retroperitoneal neuroblastoma were *** A total of 571 patients were enrolled in this *** complications were observed in 255(44.7%)*** leakage(28.4%),diarrhea(13.5%),and injury(vascular,nerve and organ;7.5%)were the most frequent *** were three operation-related deaths(0.53%):massive hemorrhage(n=1),biliary tract perforation(n=1)and intestinal necrosis(n=1).The presence of image-defined risk factors(IDRFs)[odds ratio(OR)=2.09,P<0.01],high stage of the International Neuroblastoma Risk Group staging system(INRGSS)(OR=0.454,P=0.04),retroperitoneal lymph node metastasis(OR=2.433,P=0.026),superior mesenteric artery encasement(OR=3.346,P=0.003),and inferior mesenteric artery encasement(OR=2.218,P=0.019)were identified as independent risk factors for perioperative *** Despite the high incidence of perioperative complications,the associated mortality rate was quite ***-perative complications of retroperitoneal neuroblastoma were associated with IDRFs,INRGSS,retroperitoneal lymph node metastasis and vascular *** with high-risk factors should receive more serious attention during surgery but should not discourage the determination to pursue total resection of neuroblastoma.

关键词： Complication Neuroblastoma Risk factors Surgery

Development and validation of a novel non-invasive test for diagnosing nonalcoholic fatty liver disease in Chinese children

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World Journal of Pediatrics 2024年第4期20卷 413-421页

作者： Zhe-Wen Qin Qian-Nan Ren Hong-Xi Zhang Ya-Ru Liu Ke Huang Wei Wu Guan-Ping Dong Yan Ni Jun-Fen Fu Division of Endocrinology National Clinical Research Center for Child HealthNational Children’s Regional Medical CenterThe Children’s HospitalDepartment of EndocrinologyNational Clinical Research Center for Child HealthNational Children’s Regional Medical CenterThe Children’s HospitalZhejiang University School of MedicineHangzhou310052China

With the exploding prevalence of obesity,many children are at risk of developing nonalcoholic fatty liver *** anthropometric and laboratory parameters,our study aimed to develop a model to quantitatively evaluate liver fat content(LFC)in children with *** A well-characterized cohort of 181 children between 5 and 16 years of age were recruited to the study in the Endocrinology Department as the derivation *** external validation cohort comprised 77 *** assessment of liver fat content was performed using proton magnetic resonance *** and laboratory metrics were measured in all subjects.B-ultrasound examination was carried out in the external validation *** Kruskal-Wallis test,Spearman bivariate correlation analyses,univariable linear regressions and multivariable linear regression were used to build the optimal predictive *** The model was based on indicators including alanine aminotransferase,homeostasis model assessment of insulin resistance,triglycerides,waist circumference and Tanner *** adjusted R^(2)of the model was 0.589,which presented high sensitivity and specificity both in internal[sensitivity of 0.824,specificity of 0.900,area under curve(AUC)of 0.900 with a 95%confidence interval:0.783–1.000]and external validation(sensitivity of 0.918 and specificity of 0.821,AUC of 0.901 with a 95%confidence interval:0.818–0.984).Conclusions Our model based on five clinical indicators was simple,non-invasive,and inexpensive;it had high sensitivity and specificity in predicting LFC in ***,it may be useful for identifying children with obesity who are at risk for developing nonalcoholic fatty liver disease.

关键词： Biochemical markers Children Magnetic resonance spectroscopy Nonalcoholic fatty liver disease Pediatric obesity

Determinants of malaria from environmental and poverty aspects in Indonesia:A spatiotemporal perspective,2016-2020

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Asian Pacific Journal of Tropical Medicine 2024年第6期17卷 256-267页

作者： Afi Nursafingi Prima Widayani Sidiq Purwoko Andy Bhermana research center for Public Health and Nutrition Research Organization for HealthNational Research and Innovation AgencyJakartaIndonesia Department of Geographic Information Science Faculty of GeographyUniversitas Gadjah MadaYogyakartaIndonesia center for Food Crops Research Organization for Agriculture and FoodNational Research and Innovation AgencyJakartaIndonesia

Objective:To investigate the environmental and social aspects of poverty contributing to malaria incidence in Indonesia from 2016 to ***:Random forest regression was used to analyse the independent variables contributing to malaria *** conditions were extracted from remotely sensed data,including vegetation,land temperature,soil moisture,precipitation,and *** contrast,the social aspects of poverty were obtained from government statistical ***:From 2016 to 2020,the contribution of each environmental and social aspect of poverty to malaria incidence fluctuated ***,the top three essential variables were people aged 15 years and above,experiencing poverty(variable importance/VI=32.0%),people experiencing poverty who work in the agricultural sector(VI=14.4%),and precipitation(VI=9.8%).It was followed by people experiencing poverty who are unemployed(VI=9.2%),land temperature(VI=5.2%),people experiencing poverty who have low education(VI=8.0%),soil moisture(VI=7.4%),elevation(VI=6.0%),and vegetation(VI=3.8%).Conclusions:Poverty and variables related to climate have become the crucial determinants of malaria in *** government must strengthen malaria surveillance through climate change mitigation and adaptation programs and accelerate poverty alleviation programs to support malaria elimination.

关键词： Malaria Poverty Climate Random forest Indonesia