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Periodontal status and associated risk factors among childbearing age women in Cixi City of China

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2013年第3期14卷 231-239页

作者： Yan-min WU Jia liU Wei-lian SUN li-li CHEN li-guo chai Xiang XIAO Zheng CAO Department of Oral Medicine the Second Affiliated HospitalSchool of MedicineZhejiang University Department of Oral Medicine Cixi Huayang Dental Hospital Department of Dentistry Sir Run Run Shaw HospitalSchool of MedicineZhejiang University

Objective:To investigate the periodontal status and associated risk factors among women of childbearing age to increase the awareness of oral ***:The study was conducted on childbearing age women in Cixi,a city in Zhejiang Province in the southeast of China.A total of 754 women participated in periodontal examination while receiving prenatal *** of the women were collected from the Cixi Family Planning Commission and during an *** periodontal indices,such as bleeding on probing(BOP),probing depth(PD),and clinical attachment level(CAL) were measured during the *** analysis on subject-based data was ***:The prevalence of periodontal disease among childbearing age women in Cixi was high(84.7%).A significant association was found between the disease and educational level,pregnancy,taking oral contraceptives,stress,alcohol consumption,overweight,dental visit,and teeth brushing(Plinical attachment *** this population,pregnancy was closely associated with higher BOP percentage;teeth brushing no more than once per day or brushing for less than 1 min(P<0.001) after adjusting for age and ***:The periodontal status of childbearing age women in Cixi needs to be improved *** towards the periodontal health should be warranted,especially for those in special statuses and with poor awareness.

关键词： Periodontal status Childbearing age women Risk factors Pregnancy

Studies on Wear and Corrosion Resistances of Carbon Nitride Thin Films on Ti Alloy

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Wuhan University Journal of Natural Sciences 2003年第03A期8卷 821-824页

CN x /SiCN composite films were prepared on titanium ( Ti ) alloy substrates by Radio Frequency Plasma Enhanced Chemical Vapor Deposition ( RF\|PECVD ). As a buffer layer, SiCN ensured the adhesion of the CN x thin films on Ti substrates. X\|ray diffraction ( XRD) measurement revealed that the composite films possessed α\|C 3 N 4 structure. The microhardness of the films was 48 to 50 GPa. In order to test the characteristics of wear and corrosion resistances, we prepared Ti alloy samples with and without CN x /SiCN composite films. Also for strengthening the effect of wear and corrosion, the wear tests were carried out under high load (12 MPa) and in 0.9% NaCl solution. Results of the wear tests and the corrosive electrochemical measurements showed that the samples coated with CN x films had excellent characteristics of wear and corrosion resistances compared with Ti alloy substrate samples.

关键词： carbon nitride films RF PECVD wear resistance corrosion resistance

Field Emission of SiCN Thin Films Bombarded by Ar^+ Ions

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Wuhan University Journal of Natural Sciences 2003年第03A期8卷 829-832页

SiCN thin films were synthesized by a radio frequency chemical vapor deposition (RFCVD) system on P\|type Si (1 0 0) wafers using C 2 H 4 , SiH 4 and N 2 as raw materials. In order to get rid of the oxygen absorbed on the surface and improve the characteristics of electron field emission, Ar + ions of low energy were used to bombard the samples. The field emission characteristics of SiCN thin films before and after Ar + bombardment were studied in the super vacuum environment of 10 -6 Pa. It was showed that the turn\|on field (defined as the point where the current\|voltage curve shows a sharp increase in the current density) decreased from 38 V/μm before bombardment to 25 V/μm after bombardment. And the maximum emission current density increased from 159.2 to 267.4 μA/cm 2 . The composition before and after Ar + bombardment was compared using X\|ray photoelectron spectroscopy (XPS). Our results illustrated that the field emission characteristics were improved after the bombardment of Ar + .

关键词： SiCN thin films RFCVD electron field emission X\|ray photoelectron spectroscopy (XPS)

Treatment of gastric varices by endoscopic sclerotherapy using butyl cyanoacrylate:10 years' experience of 635 cases

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Chinese Medical Journal 2007年第23期120卷 2081-2085页

作者： CHENG liu-fang WANG Zhi-qiang li Chang-zheng CAI Feng-chun HUANG Qi-yang liNGHU En-qiang li Wen chai guo-jun SUN guo-hui MAO Yong-ping WANG Yan-mei li Jing GAO Ping FAN Tie-yan Department of Gastroenterology and Hepatology General Hospital of Chinese People＇s Liberation Army Beijing 100853 China

Background Gastric varices （GV） are life-threatening for patients with portal hypertension. Endoscopic injection with butyl cyanoacrylate （BC）, the mainstay of the therapy for GV, has been reported to be effective for hemostasis of bleeding varices, but its efficacy in the obliteration of GV and impact on the survival of patients still needs clarification. Here we summarized our experience of 10 years＇ practice to evaluate the efficacy and safety of endoscopic therapy using BC for GV patients. Methods From January 1997 to April 2006, GV cases treated with endoscopic injection using BC were collected. The ＂sandwich method＂ and the ＂modified sandwich method＂ were used to inject BC intravascularly. Retrograde analysis was made on the data of treatment and follow-up. Results A total of 635 GV cases treated with endoscopic injection using BC were collected, most of them （90.2%） suffered from post-hepatitis cirrhosis. Emergency hemostasis was achieved in 139 out of 146 sessions （95.2%）. Complications occurred in 32 cases （5.2%）, including hemorrhage due to early expulsion of tissue glue （3.1%）, septicemia （1%） and ectopic thrombosis （0.5%）, such as spleen infarction. Endoscopic follow-up in 503 patients showed complete disappearance （76.9%）, collapse （17.3%） or remnants （5.8%） of gastric varices. A total of 550 patients were followed up clinically for 3 to 115 months. Of these patients, 44 had recurrent bleeding （8.0%） and 44 died from hepatic failure, recurrent bleeding, hepatic carcinoma or other causes. The longest survival was 115 months, with a median survival of 25 months. Survival rates at 1,2, 3, 4 and 5 year were 95%, 92%, 90%, 83% and 81%, respectively. Conclusions Endoscopic sclerotherapy with BC is effective for the hemostasis of bleeding GV, as well as obliteration of GV which contributes to less rebleeding and better survival. The modified sandwich method may be useful to minimize ectopic embolism, which we speculated to result from excess iodized oil.

关键词： gastric varices endoscopic sclerotherapy butyl cyanoacrylate survival

Microstructural evolution during the progressive transformation-induced plasticity effect in a Fe-0.1C-5Mnmedium manganese steel

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 369-379页

作者： Mei Zhang Wenhao li Yangfei Chen Yang Jiang Xiaofei guo Han Dong School of Materials Science and Engineering Shanghai UniversityShanghai 200444China State Key Laboratory of Advanced Special Steel Shanghai UniversityShanghai 200444China

The microstructural evolution of a cold-rolled and intercritical annealed medium-Mn steel(Fe-0.10C-5Mn)was investigated during uniaxial tensile ***-situ observations under scanning electron microscopy,transmission electron microscopy,and X-ray diffraction analysis were conducted to characterize the progressive transformation-induced plasticity process and associated fracture initiation *** findings were discussed with the local strain measurements via digital image *** results indicated that Lüders band formation in the steel was limited to 1.5%strain,which was mainly due to the early-stage martensitic phase transformation of a very small amount of the less stable large-sized retained austenite(RA),which led to localized stress concentrations and strain hardening and further retardation of *** small-sized RA exhibited high stability and progressively transformed into martensite and contributed to a stably extended Portevin-Le Chatelier *** volume fraction of RA gradually decreased from 26.8%to 8.2%prior to *** the late deformation stage,fracture initiation primarily occurred at the austenite/martensite and ferrite/martensite interfaces and the ferrite phase.

关键词： medium-Mn steel retained austenite progressive transformation-induced plasticity effect local strain fracture initiation

EFFECTS OF,ZINC SUPPLEMENT BY DIFFERENT WAY ON ZINC SERUM AND TISSUE OF SCALDED RATS

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EFFECTS OF,ZINC SUPPLEMENT BY DIFFERENT WAY ON ZINC SERUM AN...

Dip2a regulates stress susceptibility in the basolateral amygdala

Sino--Japanese Beijing International Symposium on Burns,1998

作者： li ligen,guo Zhenrong,chai Jiake,et al.Burn Institute,304th Hospital,Beijing 100037,P.R.China

Aim of study: The beneficial effects of zinc supplement on zinc levels in serum and tissue of scalded rats were ***: SD rats were sustained to deep skin thickness dorsal scald injuries covering 15% of TBSA and then we...

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来源： cnki会议评论

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Neural Regeneration Research 2025年第6期20卷 1735-1748页

作者： Jing li Zixuan He Weitai chai Meng Tian Huali Yu Xiaoxiao He Xiaojuan Zhu Key Laboratory of Molecular Epigenetics Ministry of Education Institute of Genetics and CytologyNortheast Normal UniversityChangchunJilin ProvinceChina

Dysregulation of neurotransmitter metabolism in the central nervous system contributes to mood disorders such as depression, anxiety, and post–traumatic stress disorder. Monoamines and amino acids are important types of neurotransmitters. Our previous results have shown that disco-interacting protein 2 homolog A(Dip2a) knockout mice exhibit brain development disorders and abnormal amino acid metabolism in serum. This suggests that DIP2A is involved in the metabolism of amino acid–associated neurotransmitters. Therefore, we performed targeted neurotransmitter metabolomics analysis and found that Dip2a deficiency caused abnormal metabolism of tryptophan and thyroxine in the basolateral amygdala and medial prefrontal cortex. In addition, acute restraint stress induced a decrease in 5-hydroxytryptamine in the basolateral amygdala. Additionally, Dip2a was abundantly expressed in excitatory neurons of the basolateral amygdala, and deletion of Dip2a in these neurons resulted in hopelessness-like behavior in the tail suspension test. Altogether, these findings demonstrate that DIP2A in the basolateral amygdala may be involved in the regulation of stress susceptibility. This provides critical evidence implicating a role of DIP2A in affective disorders.

关键词： 5-hydroxytryptamine acute restraint stress basolateral amygdala CaMKII neurons DIP2A metabolomics neurotransmitters principal component analysis stress susceptibility tryptophan

Synergistic effect of bonding heterogeneity and phonon localization in introducing excellent thermoelectric properties in layered heteroanionic NdZnSbO material

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Journal of Energy Chemistry 2025年第1期100卷 259-272页

作者： Da Wan Shuwei Tang Shulin Bai Xiaodong li Peng Ai Wanrong guo Tuo Zheng College of Materials Science and Engineering Liaoning Technical University Faculty of Chemistry Northeast Normal University

Layered rare-earth metal oxides, harnessing the dual properties of oxides and two-dimensional layered materials, exhibit remarkable thermal stability and quantum confinement effects. Therefore, this work adopts the first-principles calculation combined with the Boltzmann transport theory to predict the thermoelectric properties of NdZnSbO compound. The coexistence of weak interlayer van der Waals interactions, robust intralayer ionic bonding, and partial covalent bonding leads to remarkable bonding heterogeneity, which engenders pronounced phonon scattering and imposes constraints on thermal transport along the out-of-plane direction. The weakened chemical bonds induced by the antibonding states, together with the rattling-like behavior of the Zn atom, culminate in the profound anharmonicity in the layered NdZnSbO compound. The weakening bond and heavy element contribute to the softness of phonon modes, which significantly diminishes the phonon group velocity. The redistribution-dominated four-phonon scattering process spans a large optical gap, which effectively reduces the lattice thermal conductivity. The NdZnSbO compound exhibits direct semiconductor characteristic with a bandgap of 0.73 e V by adopting the Heyd-Scuseria-Ernzerhof(HSE06) functional in combination with spin–orbit coupling(SOC) effect. The multi-valley feature of NdZnSbO compound augur favorably for band degeneracy, thus amplifying the power factor. Consequently, an optimal figure-of-merit(ZT) of 3.40 at 900 K is achieved for the n-type NdZnSbO compound. The present study delves deeply insights into the origins for the low thermal conductivity of NdZnSbO compound and proposes an optimization scheme to enhance overall thermoelectric performance.

关键词： Bond strength (chemical)

Interfacial Zn2+-solvation regulator towards reversible and stable Zn anode

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Journal of Energy Chemistry 2025年第1期100卷 684-692页

作者： Miao Zhou Xiongbin Luo Hang li Shan guo Zhuang Tong Xiaotao Zhou Xu li Zhaohui Hou Shuquan liang guozhao Fang College of Mechanical Engineering Key Laboratory of Hunan Province for Advanced Carbon-based Functional Materials Hunan Institute of Science and Technology School of Materials Science and Engineering Key Laboratory of Electronic Packaging and Advanced Functional Materials of Hunan Province Central South University College of Materials and Metallurgy Guizhou University National Energy Metal Resources and New Materials Key Laboratory Central South University

Aqueous zinc-ion batteries （AZIBs） are fundamentally challenged by the instability of the electrode/electrolyte interface,predominantly due to irreversible zinc （Zn） deposition and hydrogen ***,the intricate mechanisms behind the electrochemical discrepancies induced by interfacial Zn2+-solvation and deposition behavior demand comprehensive *** molecules endowed with special functional groups （such as hydroxyl,carboxyl,etc.） have the potential to significantly optimize the solvation structure of Zn2+and regulate the interfacial electric double layer （EDL）.By increasing nucleation overpotential and decreasing interfacial free energy,these functional groups facilitate a lower critical nucleation radius,thereby forming an asymptotic nucleation model to promote uniform Zn ***,this study presents a pioneering approach by introducing trace amounts of n-butanol as solvation regulators to engineer the homogenized Zn （H-Zn） anode with a uniform and dense *** interfacial reaction and structure evolution are explored by in/ex-situ experimental techniques,indicating that the H-Zn anode exhibits dendrite-free growth,no by-products,and weak hydrogen evolution,in sharp contrast to the bare ***,the H-Zn anode achieves a remarkable Zn utilization rate of approximately 20% and simultaneously sustains a prolonged cycle life exceeding 500 ***,the H-Zn//NH4V4O10（NVO） full battery showcases exceptional cycle stability,retaining 95.04%capacity retention after 400 cycles at a large current density of 5 A *** study enlightens solvation-regulated additives to develop Zn anode with superior utilization efficiency and extended operational lifespan.

关键词： Aqueous zinc-ion batteries Interfacial reaction Asymptotic nucleation model Reversible and stable Zn anode