SELECTED ABSTRACTS OF ARTICLES ON RARE METALS FROM CHINESE PERIODICALS

CONTENTS1.Extractive Metallurgy(40～43)2.Metal Materials and Technology(30～32)3.Semiconductors(38～40)4.Metal Physics(24～26)5.Chemical Analysis and Physical Testing(38～39)93-1-40 Study of Pt-Ga/AlOCatalysts Ⅱ.Ef-fect of Ga on the Surface Structure and Acidity of the Cata-lysts The effect of Ga on the surface structure of sup-port and the acidity of Pt-Ga/AlOcatalysts was studiedby using EPMA,XRD,IR,physical adsorption,frontaladsorption of basic gases and cumene cracking.The results

SELECTED ABSTRACTS OF ARTICLES ON RARE METALS FROM CHINESE PERIODICALS

89 1-01 Investigation of SingleMoFeSCubane-Like Cluster Compounds——Ⅲ.TheConversion of Linear Trinuclear Cluster into SingleCubane Cluster and the Structure ofMoFeS(EtNCS)CHCN Reaction ofFe(DMF)[(FeCl)MoS] and EtNCSNa in DMF re-sults in conversion of the linear trinuclear cluster into thesingle cabane—like cluster,MoFeS(EtNCS),thestructure of which has been determined.The influence ofthe ligand—related redox process and the ligation modeon the conversion reaction and the product are discussed.

SELECTED ABSTRACTS OF ARTICLES ON RARE METALS FROM CHINESE PERIODICALS

CONTENTS1.Extractive Metallurgy(9～16)2.Metal Material and Technology(5～9)3.Semiconductor(9～17)4.Metal Physics(5～8)5.Chemical Analysis and Physical Testing(5～11)92 1-9 Determination of Trace Selenium in High-Puri-ty Copper by Polarographic Catalytic Wave after Enrichmentand Separation with Sulfhydrl-Cotton A novel procedure

SELECTED ABSTRACTS OF ARTICLES ON RARE METALS FROM CHINESE PERIODICALS

93-1-38 Chemical Dispersion of MoOand TiOat Interface of MoO/TiOThe dispersion capacity ofMoOand TiOat the interface of MoO/TiOcal-cined at 500℃ for 5h was studied by XRD and FT-IR dif-ference spectra.There is about one monolayer ofnon-crystalline phase of MoOand TiOat the interface.

Frontier and Evolution of Marketing Discipline Based on Scientific Metrological Analysis of Top 4 Marketing Periodicals in 2009-2013

Using scientific metrological method,this paper analyzed all literature published by top 4 marketing periodicals( JCR,JM,JMR,and MS) in 2009- 2013. It is intended to find out hot issues and frontier topics of current marketing research through cluster analysis of key words,get to know cooperation and exchange of organizations through analysis of organization cooperative network,explore new topics of marketing researches with the aid of analysis of abrupt change words,and explore evolution path and development rules of marketing researches through co-citation network analysis.

SELECTED ABSTRACTS OF ARTICLES ON RARE METALS FROM CHINESE PERIODICALS

891—11 Polymerization of Conjugated Dienes withMixed Catalyst of Rare Earth and Other Transition MetalsⅠ.Butadiene Polymerization in the Presence of(NdCl+FeCl).nphen-AIH(i-Bu)Catalytic systemThe mixed catalyst(NdCl+FeCl).nphen with differentFe/Nd ratios was prepared by means of co-precipitation,and the polymerization of butadiene with the catalyst systemcomposed of(NdCl+FeCl).nphen and AIH(i-Bu)was

SELECTED ABSTRACTS OF ARTICLES ON RARE METALS FROM CHINESE PERIODICALS

90 1-1 Liquidus of NdCl-MgCl-LiCl SystemThe liquidus of ternary system NdCl-MgCl-LiCl hasbeen determined by means of DTA.It was found that thereare two surfaces corresponding to the primary crystallizationof NdCland α-(MgCl,LiCl) respectively,and anunivariant line related to the secondary crystallization with aminimun poin M(68.5 wt% NdCl.2.7 wt% MgCl,28.8wt% LiCl.441℃) in the system.Zheng Chaogui et al.,ActaMetallurgica Sinica.25(1989),No.1,B69.

SELECTED ABSTRACTS OF ARTICLES ON RARE METALS FROM CHINESE PERIODICALS

CONTENTS1.Extractive Metallurgy(36～37)2.Metal Material and Technology(26～27)3.Semiconductor(34～35)4.Metal Physics(21)5.Chemical Analysis and Physical Testing(35)

SELECTED ABSTRACTS OF ARTICLES ON RARE METALS FROM CHINESE PERIODICALS

92 1-1 Study on the Adsorption of HPdCland Me-tallic Ions on AlOThe adsorption of HPdCland me-tallic ions on AlOand their dependence have been studied.The adsorption isotherms of HPdCl, HPtCl, HAuCland Cu(NO), Co(NO), Ni(NO)on AlOwere all ofLangmuir type. The amount of HPdCladsorbed onAlOwas decreased by pre-impregnation with metallic ions.

The Eighth Working Meeting of Serial Periodicals of the People's Medical Publishing House and the Meeting of the Ninth Editorial Board of the Chinese Journal for Clinicians and the Second Editorial Board of Global Health Journal were successfully convened

On March 15,2019,in order to study and implement General Secretary Xi Jinping's speech on deepening reform and cultivating worldclass scientific and technological journals,the eighth working meeting of serial periodicals of the People's Medical Publishing House (PMPH),meeting of the ninth editorial board of the Chinese Journal for Clinicians,and the second editorial board of the Global Health Journal were held in Beijing.

SELECTED ABSTRACTS OF ARTICLES ON RARE METALS FROM CHINESE PERIODICALS

contents1.Extractive Metallurgy(17～23)2.Metal Material and Technology(7～10)3.Semiconductor(15～21)4.Metal Physics(7～9)5.Chemical Analysis and Physical Testing(14～19)89 1-17 Preparation of High- Voltage andHigh-Capacitance Tantalum Powder with CarbonReducing The technology of preparing high-voltage andhigh-eapacitance tantalum powder with carbon reducing has

SELECTED ABSTRACTS OF ARTICLES ON RARE METALS FROM CHINESE PERIODICALS

92 1-29 Role of Ceria in Non-precious Metal OxideCatalysts I. The Oxygen Properties of Cu and Ce OxidesSupported on γ-AlOThe reaction between Hand oxy-gen of Cu-O/ γ-AlO(Ⅰ), Ce-O/ γ-AlO(Ⅱ) was studiedby TPR method. The TPR spectra of (Ⅰ) show the peaks at

SELECTED ABSTRACTS OF ARTICLES ON RARE METALS FROM CHINESE PERIODICALS

89 1-24 Sulfur-Resistant Titanium Oxide BasedCatalysts for Deep Oxidation The poisonous effect ofSOon Ti-Cu. Ti-Mn oxides catalysts for the deepoxidation of toluene was investigated by means of infraredspectroscopy and X-ray photoelectron spectroscopy. It wasfound that the poisoning of the catalyst at lower temperaturewas caused by the SOadsorption, and the activity of thepoisoned catalyst could be regenerated. The kinetics of thedeep oxidation of toluene over Ti-Cu oxide catalyst before

Petroleum Periodicals in China Petroleum Industry Circle

ＰｅｔｒｏｌｅｕｍＰｅｒｉｏｄｉｃａｌｓｉｎＣｈｉｎａＰｅｔｒｏｌｅｕｍＩｎｄｕｓｔｒｙＣｉｒｃｌｅ￥（ＧａｏＹｉｎｇ）Petroleum Periodicals in China Petroleum Industry Circle...

Petroleum Periodicals in China Petroleum Industry Circle

ＰｅｔｒｏｌｅｕｍＰｅｒｉｏｄｉｃａｌｓｉｎＣｈｉｎａＰｅｔｒｏｌｅｕｍＩｎｄｕｓｔｒｙＣｉｒｃｌｅPetroleum Periodicals in China Petroleum Industry Circle...

ON THE STABILITY OF PERIODIC SOLUTIONS OF PIECEWISE SMOOTH PERIODIC DIFFERENTIAL EQUATIONS

In this paper,we address the stability of periodic solutions of piecewise smooth periodic differential equations.By studying the Poincarémap,we give a sufficient condition to judge the stability of a periodic solution.We also present examples of some applications.

Tim4 deficiency reduces CD301b+macrophage and aggravates periodontitis bone loss

Periodontitis is a common chronic inflammatory disease that causes the periodontal bone destruction and may ultimately result in tooth loss.With the progression of periodontitis,the osteoimmunology microenvironment in periodontitis is damaged and leads to the formation of pathological alveolar bone resorption.CD301b^(+)macrophages are specific to the osteoimmunology microenvironment,and are emerging as vital booster for conducting bone regeneration.However,the key upstream targets of CD301b^(+)macrophages and their potential mechanism in periodontitis remain elusive.In this study,we concentrated on the role of Tim4,a latent upstream regulator of CD301b^(+)macrophages.We first demonstrated that the transcription level of Timd4(gene name of Tim4)in CD301b^(+)macrophages was significantly upregulated compared to CD301b−macrophages via high-throughput RNA sequencing.Moreover,several Tim4-related functions such as apoptotic cell clearance,phagocytosis and engulfment were positively regulated by CD301b^(+)macrophages.The single-cell RNA sequencing analysis subsequently discovered that Cd301b and Timd4 were specifically co-expressed in macrophages.The following flow cytometric analysis indicated that Tim4 positive expression rates in total macrophages shared highly synchronized dynamic changes with the proportions of CD301b^(+)macrophages as periodontitis progressed.Furthermore,the deficiency of Tim4 in mice decreased CD301b^(+)macrophages and eventually magnified alveolar bone resorption in periodontitis.Additionally,Tim4 controlled the p38 MAPK signaling pathway to ultimately mediate CD301b^(+)macrophages phenotype.In a word,Tim4 might regulate CD301b^(+)macrophages through p38 MAPK signaling pathway in periodontitis,which provided new insights into periodontitis immunoregulation as well as help to develop innovative therapeutic targets and treatment strategies for periodontitis.

The neutrophil–osteogenic cell axis promotes bone destruction in periodontitis

The immune-stromal cell interactions play a key role in health and diseases. In periodontitis, the most prevalent infectious disease in humans, immune cells accumulate in the oral mucosa and promote bone destruction by inducing receptor activator of nuclear factor-κB ligand (RANKL) expression in osteogenic cells such as osteoblasts and periodontal ligament cells. However, the detailed mechanism underlying immune–bone cell interactions in periodontitis is not fully understood. Here, we performed single-cell RNAsequencing analysis on mouse periodontal lesions and showed that neutrophil–osteogenic cell crosstalk is involved in periodontitis-induced bone loss. The periodontal lesions displayed marked infiltration of neutrophils, and in silico analyses suggested that the neutrophils interacted with osteogenic cells through cytokine production. Among the cytokines expressed in the periodontal neutrophils, oncostatin M (OSM) potently induced RANKL expression in the primary osteoblasts, and deletion of the OSM receptor in osteogenic cells significantly ameliorated periodontitis-induced bone loss. Epigenomic data analyses identified the OSM-regulated RANKL enhancer region in osteogenic cells, and mice lacking this enhancer showed decreased periodontal bone loss while maintaining physiological bone metabolism. These findings shed light on the role of neutrophils in bone regulation during bacterial infection, highlighting the novel mechanism underlying osteoimmune crosstalk.