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  1. Article ; Online: Predicting risk of postpartum hemorrhage associated with vaginal delivery of twins: A retrospective study.

    Liu, Zhaodong / Chen, Rongxin / Huang, Huihui / Yan, Jianying / Jiang, Caihong

    Medicine

    2023  Volume 102, Issue 50, Page(s) e36307

    Abstract: Many studies have only focused on the risk factors for postpartum hemorrhage (PPH) in singleton vaginal deliveries and twin cesarean deliveries. We analyzed the factors of influencing PPH occurrence in twin vaginal deliveries and developed a nomogram for ...

    Abstract Many studies have only focused on the risk factors for postpartum hemorrhage (PPH) in singleton vaginal deliveries and twin cesarean deliveries. We analyzed the factors of influencing PPH occurrence in twin vaginal deliveries and developed a nomogram for clinical application. This retrospective study included 274 pregnant women with twin pregnancies who were hospitalized for delivery from January 2014 to December 2018. The patients opted for vaginal delivery and experienced spontaneous labor. Univariate analysis of PPH risk factors was performed. Multivariate analysis was performed using the least absolute shrinkage and selection operator (LASSO) to obtain relevant factors and build a prediction model, which was presented as a nomogram. The model was internally validated by bootstrap self-sampling method. Model accuracy was evaluated with the concordance index (C-index). There were 36 (13.14%) and 238 (86.9%) patients in the PPH and no PPH groups, respectively. Univariate analysis identified twin chorionicity, hypertensive disorders complicating pregnancy (HDCP), anemia in pregnancy, delivery mode of the second twin, oxytocin use during labor, postpartum curettage, cervical laceration, intrapartum fever, fibrinogen degradation products (FDP), and platelet count (PLT) as significant PPH factors. On multivariate analysis, HDCP, anemia in pregnancy, intrapartum fever, oxytocin use during labor, fetal distress, PLT, direct bilirubin, and FDP were noted as significant PPH factors and were included in the prediction model. A C-index of 0.816 was noted after internal validation, and the calibration curve showed good consistency. We developed a model to predict PPH risk in the vaginal delivery of twin pregnancies and visualized it with a nomogram that can be applied clinically to assess PPH risk and aid PPH prevention.
    MeSH term(s) Pregnancy ; Female ; Humans ; Postpartum Hemorrhage/epidemiology ; Postpartum Hemorrhage/etiology ; Postpartum Hemorrhage/drug therapy ; Oxytocin/therapeutic use ; Retrospective Studies ; Delivery, Obstetric/adverse effects ; Hypertension/drug therapy ; Anemia/complications ; Risk Factors
    Chemical Substances Oxytocin (50-56-6)
    Language English
    Publishing date 2023-12-19
    Publishing country United States
    Document type Journal Article
    ZDB-ID 80184-7
    ISSN 1536-5964 ; 0025-7974
    ISSN (online) 1536-5964
    ISSN 0025-7974
    DOI 10.1097/MD.0000000000036307
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  2. Article ; Online: Aluminum Components in Bridgmanite Coexisting With Corundum and the CF‐Phase With Temperature

    Wang, Lin / Liu, Zhaodong / Koizumi, Sanae / Ballaran, Tiziana Boffa / Katsura, Tomoo

    Journal of Geophysical Research: Solid Earth. 2023 Jan., v. 128, no. 1 p.e2022JB025739-

    2023  

    Abstract: Phase relations in the MgSiO₃–MgAl₂O₄–Al₂O₃ system are investigated at 27 GPa and 2000–2600 K using a multi‐anvil apparatus. The AlAlO₃ content in the bridgmanite increases from 8.6 to 20.0 mol% with increasing temperature from 2000 to 2600 K, while the ... ...

    Abstract Phase relations in the MgSiO₃–MgAl₂O₄–Al₂O₃ system are investigated at 27 GPa and 2000–2600 K using a multi‐anvil apparatus. The AlAlO₃ content in the bridgmanite increases from 8.6 to 20.0 mol% with increasing temperature from 2000 to 2600 K, while the MgAlO₂.₅ content remains nearly constant, that is, 3–4 mol% at these temperatures. Therefore, the presence of an additional Al‐bearing phase suppresses the oxygen vacancy substitution for Al³⁺ in bridgmanite. Conversely, significant amounts of the Al₈/₃O₄ component can be dissolved into the calcium‐ferrite type MgAl₂O₄–Mg₂SiO₄–Al₈/₃O₄ phase (CF‐phase), implying that the CF‐phase likely contains some amount of vacancies. Therefore, the CF‐phase could also be a candidate mineral for transporting volatiles into the lower mantle. Our results, combined with previous studies on Al‐bearing bridgmanite, indicate that, once the Al per formula unit exceeds 0.12 in bridgmanite, the MgAlO₂.₅ content remains nearly constant and the AlAlO₃ component becomes dominant.
    Keywords aluminum ; geophysics ; oxygen ; research ; temperature
    Language English
    Dates of publication 2023-01
    Publishing place John Wiley & Sons, Ltd
    Document type Article ; Online
    Note JOURNAL ARTICLE
    ISSN 2169-9313
    DOI 10.1029/2022JB025739
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  3. Article: Variation in Soil Denitrification among Fertilization Regimes and Its Microbial Mechanism

    Wang, Haicui / Liu, Zhaodong / Li, Dandan / Ma, Lei / Zhao, Bingzi / Zhang, Jiabao

    Geomicrobiology journal. 2022 Aug. 1, v. 39, no. 8

    2022  

    Abstract: A 27-year field experiment with various fertilization regimes was chosen for evaluating how fertilization regimes influence soil denitrification potential (SDP), to determine whether the microbial mechanism of SDP variation varies with fertilization ... ...

    Abstract A 27-year field experiment with various fertilization regimes was chosen for evaluating how fertilization regimes influence soil denitrification potential (SDP), to determine whether the microbial mechanism of SDP variation varies with fertilization regimes. The results showed that the compost (OM) fertilizer treatment presented the highest SDP followed by half compost plus half chemical fertilizer (NPKOM) treatment. Both SDPs were 3–25 times higher than those of the other treatments, and the SDP was higher in the OM than NPKOM, indicating an increase in SDP with the application of compost. The higher SDPs from OM and NPKOM were closely associated with higher abundances of functional genes, and enrichments of Rubrivivax gelatinosus and Azospirillum sp. TSO28-1, is mainly determined by the organic carbon (SOC), total nitrogen (TN), and dissolved organic carbon (DOC). For the treatments without compost, SDP mainly followed the order of chemical fertilizers of N and P (NP) > chemical fertilizers of N and K (NK) > unfertilized (Nil) > chemical fertilizers of N, P, and K (NPK) > chemical fertilizers of P and K (PK), in which the variations had a close association with different specific microbial species. That is, relative to Nil, the enhanced SDP in NP and NK was coupled with the enrichment of Ideonella sp. NC3L-43b and R. gelatinosus, likely due to their higher NO₃ ⁻ contents, while the reduced SDP in NPK was linked to the depletions of R. gelatinosus and Azospira sp. NC3H-14, and that in PK to the depletion of R. gelatinosus and Azospirillum sp. TSO28-1, probably as a result of their lower N:P ratios. Microbial mechanisms for SDP differences varied with fertilization regimes, and R. gelatinosus can be regarded as a universal microbial indicator for SDP differences across the fertilization treatments.
    Keywords Azospira ; Azospirillum ; Ideonella ; Rubrivivax gelatinosus ; composts ; denitrification ; fertilizer application ; field experimentation ; mineral fertilizers ; soil ; total nitrogen
    Language English
    Dates of publication 2022-0801
    Size p. 722-730.
    Publishing place Taylor & Francis
    Document type Article
    ZDB-ID 1482560-0
    ISSN 1521-0529 ; 0149-0451
    ISSN (online) 1521-0529
    ISSN 0149-0451
    DOI 10.1080/01490451.2022.2069888
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  4. Article ; Online: High-Pressure Coupling Reactions to Produce a Spherical Bulk Re

    Zhang, Hengyuan / Wu, Binbin / Liu, Jingyi / Liu, Zhaodong / Boi, Filippo S / He, Duanwei / Irifune, Tetsuo / Lei, Li

    Inorganic chemistry

    2023  Volume 62, Issue 16, Page(s) 6263–6273

    Abstract: We report a novel high-pressure coupling (HPC) reaction that couples the nitridation of Re with high-pressure solid-state metathesis (HPSSM) of ... ...

    Abstract We report a novel high-pressure coupling (HPC) reaction that couples the nitridation of Re with high-pressure solid-state metathesis (HPSSM) of Fe
    Language English
    Publishing date 2023-04-09
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1484438-2
    ISSN 1520-510X ; 0020-1669
    ISSN (online) 1520-510X
    ISSN 0020-1669
    DOI 10.1021/acs.inorgchem.2c04089
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  5. Article ; Online: Anomalous Pressure Response of Temperature-Induced Spin Transition and a Pressure-Induced Spin Transition in Two-Dimensional Hofmann Coordination Polymers.

    Li, Ruixin / Levchenko, Georgiy / Bartual-Murgui, Carlos / Fylymonov, Hennagii / Xu, Wei / Liu, Zhaodong / Li, Quanjun / Liu, Bingbing / Real, Jose Antonio

    Inorganic chemistry

    2023  Volume 63, Issue 2, Page(s) 1214–1224

    Abstract: Spin transition (ST) compounds have been extensively studied because of the changes in rich physicochemical properties accompanying the ST process. The study of ST mainly focuses on the temperature-induced spin transition (TIST). To further understand ... ...

    Abstract Spin transition (ST) compounds have been extensively studied because of the changes in rich physicochemical properties accompanying the ST process. The study of ST mainly focuses on the temperature-induced spin transition (TIST). To further understand the ST, we explore the pressure response behavior of TIST and pressure-induced spin transition (PIST) of the 2D Hofmann-type ST compounds [Fe(Isoq)
    Language English
    Publishing date 2023-12-30
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1484438-2
    ISSN 1520-510X ; 0020-1669
    ISSN (online) 1520-510X
    ISSN 0020-1669
    DOI 10.1021/acs.inorgchem.3c03643
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  6. Article: A zonally-oriented teleconnection pattern induced by heating of the western Tibetan Plateau in boreal summer

    Li, Qingquan / Zhao, Mengchu / Yang, Song / Shen, Xinyong / Dong, Lili / Liu, Zhaodong

    Climate dynamics. 2021 Nov., v. 57, no. 9-10

    2021  

    Abstract: The thermal effect of the Tibetan Plateau (TP) on the northern hemisphere climate has long been a hot topic of scientific research. However, the global effects of the TP heat source are still unclear. We investigate the teleconnection patterns coincident ...

    Abstract The thermal effect of the Tibetan Plateau (TP) on the northern hemisphere climate has long been a hot topic of scientific research. However, the global effects of the TP heat source are still unclear. We investigate the teleconnection patterns coincident with the TP heat source in boreal summer using both observational data and numerical models including a linearized baroclinic model and an atmospheric general circulation model. The western TP shows the most intense variability in atmospheric heating and the most active connection to atmospheric circulations. The surface sensible heating component of the western TP heat source is associated with a high-latitude wave train propagating from North Japan to central North America through the Bering Sea and Canada. The radiative heating component is accompanied by a wavenumber-4 wave train over Eurasia. We focus on the global zonally-oriented pattern that is connected with the latent heat release from the western TP, referred to here as the TP–circumglobal teleconnection (TP-CGT). The TP-CGT pattern is triggered by the western TP latent heating in two parts starting from the TP: an eastward-propagating wave train trapped in the westerly jet stream and a westward Rossby wave response. The TP-CGT accounts for above 18% of the total variance of the circumglobal teleconnection pattern and modulates mid-latitude precipitation by superimposition. The western TP is the key region in which diabatic heating can initiate the two atmospheric responses concurrently, and the heating over northeastern Asia or the Indian Peninsula is unable to induce the circumglobal pattern directly. The unique geographical location and strong tropospheric heating also make the western TP as a “transit area” of transferring the indirect impact of the Indian summer monsoon (ISM) to the TP-CGT. These results enhance our understanding of the relationship between the circumglobal teleconnection and the ISM and is helpful for improving the prediction of the circumglobal teleconnection variability.
    Keywords General Circulation Models ; Japan ; climate ; dynamics ; heat ; latent heat ; latitude ; monsoon season ; observational studies ; prediction ; summer ; troposphere ; variance ; Bering Sea ; Canada ; China ; Eurasia
    Language English
    Dates of publication 2021-11
    Size p. 2823-2842.
    Publishing place Springer Berlin Heidelberg
    Document type Article
    ZDB-ID 1471747-5
    ISSN 1432-0894 ; 0930-7575
    ISSN (online) 1432-0894
    ISSN 0930-7575
    DOI 10.1007/s00382-021-05841-6
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  7. Article ; Online: Development and evaluation of diffusive gradients in thin-films technique with a novel titanium peroxide binding gel for in situ measurement of Tl in natural waters and sediments

    Deng, Hongmei / Liu, Meiling / Liu, Zhaodong / Su, Minhua / Gao, Yue / Yang, Danxing / Liu, Yuxuan / Ma, Liang / Yu, Zhiqiang / Xiao, Tangfu / Luo, Jun

    Journal of Hazardous Materials. 2023 Sept., v. 458, p. 131976

    2023  , Page(s) 131976

    Abstract: Speciation of thallium (Tl) controls its fate and biogeochemical behaviors. Thus, a sensitive and accurately approach for Tl monitoring is of great demand due to its ultra-low concentration and sensitivity to redox change. In this study, diffusive ... ...

    Abstract Speciation of thallium (Tl) controls its fate and biogeochemical behaviors. Thus, a sensitive and accurately approach for Tl monitoring is of great demand due to its ultra-low concentration and sensitivity to redox change. In this study, diffusive gradients in thin-films technique (DGT) assembled with novel titanium peroxide (TP) binding gels (TP-DGT) was developed for in situ measurement of dissolved Tl(I) and Tl(III) in waters and sediments. Laboratory test showed a linear mass accumulation of Tl(I) and Tl(III) on the TP binding gels with the deployment time from 4 to 72 h. A fascinating performance of this novel DGT was achieved in a pH range of 4–9, ionic strength range of 0.1–200 mmol L⁻¹, and humic acid concentration of 0–30 mg L⁻¹ with a low detection limit of 0.3 ng L⁻¹ for Tl(I) and 0.6 ng L⁻¹ for Tl(III). The TP binding gels own excellent stability (1–365 d) and high capacity (73.5 μg Tl disc⁻¹) which are suitable for long-term monitoring. Field application in a river indicated that TP-DGT could work effectively, comparable to the grab sampling in waters. For the first time, the TP-DGT coupled with oxygen optode was successfully applied to map 2D distribution patterns of Tl and oxygen simultaneously in the rhizosphere of M. verticillatum L. This study confirms TP-DGT is a promising tool for routine monitoring of Tl in waters and for investigating biogeochemical processes of Tl in sediments.
    Keywords detection limit ; gels ; humic acids ; ionic strength ; laboratory experimentation ; oxygen ; pH ; rhizosphere ; rivers ; thallium ; titanium ; Diffusive gradients in thin-films (DGT) ; Titanium peroxide (TP) ; M. verticillatum L
    Language English
    Dates of publication 2023-09
    Size p. 131976
    Publishing place Elsevier B.V.
    Document type Article ; Online
    ZDB-ID 1491302-1
    ISSN 1873-3336 ; 0304-3894
    ISSN (online) 1873-3336
    ISSN 0304-3894
    DOI 10.1016/j.jhazmat.2023.131976
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  8. Article ; Online: Blood Coagulation Indices in Twin Pregnancy Complicated with Preeclampsia.

    Liu, Zhaodong / Zhang, Huale / Chen, Lichun / Lin, Lin / Yan, Jianying

    Journal of the College of Physicians and Surgeons--Pakistan : JCPSP

    2020  Volume 30, Issue 3, Page(s) 276–281

    Abstract: Objective: To determine the regular changes of blood coagulation indices in twin pregnancy complicated with preeclampsia (PE).: Study design: Descriptive study.: Place and duration of study: Fujian Provincial Maternity and Children Hospital from ... ...

    Abstract Objective: To determine the regular changes of blood coagulation indices in twin pregnancy complicated with preeclampsia (PE).
    Study design: Descriptive study.
    Place and duration of study: Fujian Provincial Maternity and Children Hospital from January 2014 to December 2017.
    Methodology: A total of 180 twin pregnancies were enrolled in this study, including 40 diagnosed as PE, 50 as severe PE (SPE), and 90 as normal twin pregnancies. The changes of coagulation parameters of twin pregnant women in different gestational states and periods were retrospectively analysed.
    Results: During the middle and late pregnancies in all groups, the PT (prothrombin time) decreased, and D-Di (D-dimers) increased gradually compared to early pregnancy (p <0.05). When D-Di increased abnormally, adverse pregnancy outcomes increased. APTT (activated partial thromboplastin time) and TT (thromoplastin time) were shortened first and then significantly prolonged (p <0.05). In the normal twin group, FIB was increased gradually from early pregnancy to midlate pregnancy; in the PE group, FIB was increased and then decreased, especially in the sPE group (p <0.05). There was no significant difference in coagulation function in early pregnancy (p >0.05). FIB in sPE group was lower than that in other two groups in late pregnancy. TT in sPE group was higher than that in other two groups. D-Di and APTT in PE group and sPE group were higher than those in normal group (p <0.05). The TT sensitivity was 68.8% with specificity 72.4%, at cut-off value of 13.48 s (p <0.01).
    Conclusion: The regular changes of blood coagulation indices in twin pregnancy complicated with PE had great predictive and diagnostic value of preeclampsia.
    MeSH term(s) Adult ; Blood Coagulation/physiology ; Blood Coagulation Tests ; Case-Control Studies ; China ; Female ; Fibrin Fibrinogen Degradation Products/metabolism ; Humans ; Pre-Eclampsia/blood ; Predictive Value of Tests ; Pregnancy ; Pregnancy Outcome ; Pregnancy, Twin ; ROC Curve
    Chemical Substances Fibrin Fibrinogen Degradation Products ; fibrin fragment D
    Language English
    Publishing date 2020-02-12
    Publishing country Pakistan
    Document type Journal Article
    ZDB-ID 2276646-7
    ISSN 1681-7168 ; 1022-386X
    ISSN (online) 1681-7168
    ISSN 1022-386X
    DOI 10.29271/jcpsp.2020.03.276
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  9. Article: Pressure Destabilizes Oxygen Vacancies in Bridgmanite

    Fei, Hongzhan / Liu, Zhaodong / Huang, Rong / Kamada, Seiji / Hirao, Naohisa / Kawaguchi, Saori / McCammon, Catherine / Katsura, Tomoo

    Journal of geophysical research. 2021 Dec., v. 126, no. 12

    2021  

    Abstract: Bridgmanite may contain a large proportion of ferric iron in its crystal structure in the forms of FeFeO₃ and MgFeO₂.₅ components. We investigated the pressure dependence of FeFeO₃ and MgFeO₂.₅ contents in bridgmanite coexisting with MgFe₂O₄‐phase and ... ...

    Abstract Bridgmanite may contain a large proportion of ferric iron in its crystal structure in the forms of FeFeO₃ and MgFeO₂.₅ components. We investigated the pressure dependence of FeFeO₃ and MgFeO₂.₅ contents in bridgmanite coexisting with MgFe₂O₄‐phase and with or without ferropericlase in the MgO‐SiO₂‐Fe₂O₃ ternary system at 2,300 K, 33 and 40 GPa. Together with the experiments at 27 GPa reported in Fei et al. (2020, https://doi.org/10.1029/2019GL086296), our results show that the FeFeO₃ and MgFeO₂.₅ contents in bridgmanite decrease from 7.6 to 5.3 mol % and from 2 to 3 mol % to nearly zero, respectively, with increasing pressure from 27 to 40 GPa. Accordingly, the total Fe³⁺ decreases from 0.18 to 0.11 pfu. The formation of oxygen vacancies (MgFeO₂.₅ component) in bridgmanite is therefore dramatically suppressed by pressure. Oxygen vacancies can be produced by ferric iron in Fe³⁺‐rich bridgmanite under the topmost lower mantle conditions, but the concentration should decrease rapidly with increasing pressure. The variation of oxygen‐vacancy content with depth may potentially affect the physical properties of bridgmanite and thus affect mantle dynamics.
    Keywords crystal structure ; geophysics ; iron ; oxygen ; research
    Language English
    Dates of publication 2021-12
    Publishing place John Wiley & Sons, Ltd
    Document type Article
    Note JOURNAL ARTICLE
    ISSN 2169-9313
    DOI 10.1029/2021JB022437
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  10. Article: Impacts of PBL schemes on PM2.5 simulation and their responses to aerosol-radiation feedback in GRAPES_CUACE model during severe haze episodes in Jing-Jin-Ji, China

    Peng, Yue / Wang, Hong / Zhang, Xiaoye / Zhao, Tianliang / Jiang, Tong / Che, Huizheng / Zhang, Xiao / Zhang, Wenjie / Liu, Zhaodong

    Atmospheric research. 2021 Jan. 15, v. 248

    2021  

    Abstract: Using the online-coupled Global/Regional Assimilation and Prediction System coupled with the Chinese Unified Atmospheric Chemistry Environment (GRAPES_CUACE) model, numerical experiments are conducted to compare the impacts of three planetary boundary ... ...

    Abstract Using the online-coupled Global/Regional Assimilation and Prediction System coupled with the Chinese Unified Atmospheric Chemistry Environment (GRAPES_CUACE) model, numerical experiments are conducted to compare the impacts of three planetary boundary layer (PBL) schemes—Medium Range Forecast (MRF), Yonsei University (YSU), and Mellor-Yamada-Janjic (MYJ)—on PM₂.₅ simulations and their responses to aerosol-radiation feedback (ARF), under different terrain and weather conditions. The baseline experiments without ARF with all three PBL schemes can reproduce the spatial and temporal distribution characteristics of surface PM₂.₅ on the whole and show that the model can capture the PM₂.₅ variation better in unstable conditions (clean days) than in stable conditions (pollution days). The three PBL schemes show differences in the simulations of meteorological factors, e.g., the MRF scheme produces the best 10-m wind speed, the MYJ scheme produces the best 2-m temperature, and the YSU scheme produces the lowest PBL height (PBLH) and vertical diffusivity. Consequently, there is no significant difference among the three PBL schemes in surface PM₂.₅ simulations due to the combined action of the surface and the PBL structure. However, all the baseline experiments massively underestimate PM₂.₅ during severe pollution days. The online computing of ARF in the three PBL schemes can substantially improve the underestimation of PM₂.₅ by reducing sensible heat fluxes, 2-m temperature, friction velocity, and the PBL height. More importantly, the response intensity of three PBL schemes to ARF is very different. For PM₂.₅ simulations, MYJ has the weakest response, whereas MRF and YSU have similar responses. During the heavy pollution days with more intense aerosol-radiation effect, the increase of PM₂.₅ induced by ARF in MRF and YSU is about twice that in MYJ, making the PM₂.₅ simulated by MRF and YSU more consistent with the observations. This result shows the ARF dependence on the PBL processes and suggests the importance of PBL-ARF interaction to the PM₂.₅ numerical prediction during haze episodes.
    Keywords atmospheric chemistry ; diffusivity ; friction velocity ; heat ; landscapes ; models ; pollution ; prediction ; research ; temperature ; troposphere ; wind speed ; China
    Language English
    Dates of publication 2021-0115
    Publishing place Elsevier B.V.
    Document type Article
    Note NAL-AP-2-clean
    ISSN 0169-8095
    DOI 10.1016/j.atmosres.2020.105268
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