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  1. Article: The Pollution Haven Strikes Back?–Evidence from Air Quality Daily Variation in the Jing-Jin-Ji Region of China

    Xu, Jintao / Xie, Lunyu / Chen, Shuai / Dong, Yingwei

    Environmental science & policy. 2022 Sept. 19,

    2022  

    Abstract: Pollution havens create environmental inequality issues. China’s recent policy of directing high- pollution firms to migrate out of its capital, Beijing, offers a case of a pollution haven that was mandated, rather than resulting from firms’ responses to ...

    Abstract Pollution havens create environmental inequality issues. China’s recent policy of directing high- pollution firms to migrate out of its capital, Beijing, offers a case of a pollution haven that was mandated, rather than resulting from firms’ responses to environmental regulation. More importantly, it leads to a question that has been less discussed in previous literature: does a pollution haven strike back? After the highly polluting enterprises moved out of Beijing to neighboring Hebei province, Hebei has been blamed for the continuing poor air quality in Beijing, based on a perception that the pollutants emitted in Hebei are being blown back to Beijing. This paper investigates the existence of a pollution haven in Hebei and quantifies the contribution of Hebei’s emissions to Beijing’s air quality. We find that the proportion of output values and the relative concentration of high- pollution industries in Hebei increased when the large-scale out-migration began, while the indicators in Beijing decreased. We also find higher emissions of enterprises in Hebei than their counterparts in Beijing. Together, these findings indicate the existence of a “manmade” pollution haven. Further, based on high-frequency spatial data, we combine an Autoregressive Distributed Lag model and a Spatial Autoregressive Model and decompose the factors that affect Beijing’s air quality into local and regional air-borne transport of pollutants. We find a significant effect of the neighboring cities’ air pollution on Beijing’s air quality. This indicates that the pollution haven indeed struck back. These findings imply the importance of regional policies to control air pollution.
    Keywords air pollution ; air quality ; capital ; environmental law ; issues and policy ; models ; spatial data ; China
    Language English
    Dates of publication 2022-0919
    Publishing place Elsevier Ltd
    Document type Article
    Note Pre-press version
    ZDB-ID 1454687-5
    ISSN 1462-9011
    ISSN 1462-9011
    DOI 10.1016/j.envsci.2022.09.014
    Database NAL-Catalogue (AGRICOLA)

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  2. Article ; Online: Assessment of heavy metal contamination in surface sediments off the Dongying coast, Bohai Sea

    Wu, Zhen / Dong, Yingwei / Liu, Rongbo / Liu, Longlong / Gao, Junfeng / Song, Wei / Zhang, Shengjiang / Qiu, Jiandong

    Marine Pollution Bulletin. 2022 July, v. 180 p.113826-

    2022  

    Abstract: In this study, 214 surface sediment samples were collected from the offshore area of the Dongying coast and were analysed for heavy metals; particularly, their concentrations and pollution status were evaluated. The copper (Cu) and chromium (Cr) ... ...

    Abstract In this study, 214 surface sediment samples were collected from the offshore area of the Dongying coast and were analysed for heavy metals; particularly, their concentrations and pollution status were evaluated. The copper (Cu) and chromium (Cr) distributions were similar, their concentrations were the highest in the northeast areas and the Xiaoqing River estuary, where dominated by fine-grained sediments. Higher concentrations of lead (Pb), zinc (Zn), cadmium (Cd), and arsenic (As) were generally found in the offshore area of the study location, and the highest Cd concentration was observed in the Xiaoqing River estuary. The sediments were not polluted by Cu, Pb, Zn, and Cr; they were not polluted or moderately polluted by Cd and As. Results of the principal component analysis indicated that Cu, Pb, Zn, and Cr were derived from natural sources and Cd and As were derived from anthropogenic sources.
    Keywords arsenic ; cadmium ; chromium ; coasts ; copper ; estuaries ; heavy metals ; lead ; marine pollution ; principal component analysis ; rivers ; sediments ; zinc ; Yellow Sea ; Contamination assessment ; Surface sediments ; Dongying coast
    Language English
    Dates of publication 2022-07
    Publishing place Elsevier Ltd
    Document type Article ; Online
    ZDB-ID 2001296-2
    ISSN 1879-3363 ; 0025-326X
    ISSN (online) 1879-3363
    ISSN 0025-326X
    DOI 10.1016/j.marpolbul.2022.113826
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  3. Article ; Online: Assessment of heavy metal contamination in surface sediments off the Dongying coast, Bohai Sea.

    Wu, Zhen / Dong, Yingwei / Liu, Rongbo / Liu, Longlong / Gao, Junfeng / Song, Wei / Zhang, Shengjiang / Qiu, Jiandong

    Marine pollution bulletin

    2022  Volume 180, Page(s) 113826

    Abstract: In this study, 214 surface sediment samples were collected from the offshore area of the Dongying coast and were analysed for heavy metals; particularly, their concentrations and pollution status were evaluated. The copper (Cu) and chromium (Cr) ... ...

    Abstract In this study, 214 surface sediment samples were collected from the offshore area of the Dongying coast and were analysed for heavy metals; particularly, their concentrations and pollution status were evaluated. The copper (Cu) and chromium (Cr) distributions were similar, their concentrations were the highest in the northeast areas and the Xiaoqing River estuary, where dominated by fine-grained sediments. Higher concentrations of lead (Pb), zinc (Zn), cadmium (Cd), and arsenic (As) were generally found in the offshore area of the study location, and the highest Cd concentration was observed in the Xiaoqing River estuary. The sediments were not polluted by Cu, Pb, Zn, and Cr; they were not polluted or moderately polluted by Cd and As. Results of the principal component analysis indicated that Cu, Pb, Zn, and Cr were derived from natural sources and Cd and As were derived from anthropogenic sources.
    MeSH term(s) Arsenic/analysis ; Cadmium/analysis ; China ; Chromium/analysis ; Environmental Monitoring/methods ; Geologic Sediments/analysis ; Lead/analysis ; Metals, Heavy/analysis ; Risk Assessment ; Rivers ; Water Pollutants, Chemical/analysis ; Zinc/analysis
    Chemical Substances Metals, Heavy ; Water Pollutants, Chemical ; Cadmium (00BH33GNGH) ; Chromium (0R0008Q3JB) ; Lead (2P299V784P) ; Zinc (J41CSQ7QDS) ; Arsenic (N712M78A8G)
    Language English
    Publishing date 2022-06-10
    Publishing country England
    Document type Journal Article
    ZDB-ID 2001296-2
    ISSN 1879-3363 ; 0025-326X
    ISSN (online) 1879-3363
    ISSN 0025-326X
    DOI 10.1016/j.marpolbul.2022.113826
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  4. Article ; Online: Cervical Transdural Discectomy with Laminoplasty for the Treatment of Multi-segment Cervical Spinal Stenosis Accompanied with Cervical Disc Herniation: Technical Note and Clinical Outcome.

    Zhang, Hao / Xu, Ruixiang / Li, Guanghui / Liu, Dong / Xiang, Hongfei / Zhang, Lei / Dong, Yingwei / Shang, Baoxin / Wu, Xiaolin / Ma, Xuexiao / Zhang, Guoqing

    Orthopaedic surgery

    2021  Volume 14, Issue 2, Page(s) 356–364

    Abstract: Objective: To describe the surgical technique of cervical transdural discectomy with laminoplasty (CTDL) for the treatment of multi-segment cervical spinal stenosis (CSS) accompanied with cervical disc herniation (CDH) and investigate its surgical ... ...

    Abstract Objective: To describe the surgical technique of cervical transdural discectomy with laminoplasty (CTDL) for the treatment of multi-segment cervical spinal stenosis (CSS) accompanied with cervical disc herniation (CDH) and investigate its surgical outcomes and complications.
    Methods: This was a clinical study. Between 2012 and 2018, 31 patients (13 males and 18 females) with multi-segment CSS (over two cervical segments) accompanied with huge CDH and underwent CTDL were enrolled in this study. The details of CTDL technique with general anesthesia was described by the authors. The average follow-up period of patients was 65.03 months (range from 24 to 126 months). Perioperative parameters such as age, sex, operative level, operative time, estimated blood loss, ambulation time, and operative complications were recorded. The results of clinical metrics such as the visual analog scale (VAS) and Japanese Orthopaedic Association (JOA) scores in the preoperative and during the follow-up period were obtained and used to evaluate clinical outcomes. Radiographic improvement was evaluated by the compression ratio, sagittal maximum spinal cord compression (SMSCC), and cervical range of motion (ROM). The preoperative and postoperative follow-up parameters (VAS, JOA, Compression ratio, SMSCC, and ROM) were assessed with paired t test. A P-value <0.05 was considered statistically significant.
    Results: In the study, the mean age of the 31 patients was 55.23 ± 10.97 years. The mean operative time was 192.45 ± 24.17 min (ranging from 150 to 245 min), and intraoperative blood loss was 322.58 ± 129.00 mL (ranging from 150 to 600 mL). The VAS neck pain was improved significantly over the follow-up period (P < 0.05, respectively). The VAS arm pain improved significantly from 6.26 ± 0.93 preoperatively to 1.74 ± 0.63 at 24 months postoperatively (P < 0.001). There was no significant difference in improvement of VAS arm pain between 24 months postoperatively and final follow-up (P = 0.180). Compared with preoperative JOA score, JOA score was significantly improved at 24 months postoperatively (14.79 ± 1.84 vs 9.66 ± 2.81, P < 0.001). Meanwhile, there were no statistically significant differences between the final follow-up and the postoperative JOA scores (15.08 ± 1.71 vs 14.79 ± 1.84, P = 0.051). Postoperative patients showed significantly higher index of compression ratio (58.30 ± 8.51 vs 27.17 ± 3.89, P < 0.001) and lower SMSCC (25.12 ± 5.67 vs 33.66 ± 5.38, P < 0.001). In addition, there was no significant difference between preoperative and postoperative cervical ROM (P = 0.740). One patient observed postoperative symptom of C
    Conclusions: This study suggested that CTDL technique could acquire satisfactory surgical outcomes for patients with multi-segment CSS accompanied with CDH, but the surgical indications of the patients need to be selected strictly.
    MeSH term(s) Adult ; Aged ; Cervical Vertebrae/diagnostic imaging ; Cervical Vertebrae/surgery ; Diskectomy ; Female ; Humans ; Intervertebral Disc Displacement/complications ; Intervertebral Disc Displacement/diagnostic imaging ; Intervertebral Disc Displacement/surgery ; Laminoplasty ; Male ; Middle Aged ; Retrospective Studies ; Spinal Fusion/methods ; Spinal Stenosis/complications ; Spinal Stenosis/diagnostic imaging ; Spinal Stenosis/surgery ; Treatment Outcome
    Language English
    Publishing date 2021-12-27
    Publishing country Australia
    Document type Journal Article
    ZDB-ID 2503162-4
    ISSN 1757-7861 ; 1757-7853 ; 1757-7861
    ISSN (online) 1757-7861 ; 1757-7853
    ISSN 1757-7861
    DOI 10.1111/os.13189
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 6786: Show issues Location:
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  5. Article ; Online: Effects of epidural capsaicin on nociceptive threshold and neurological functions in rabbits.

    Dong, Ying-Wei / Zhang, Fan / Liu, Li / Liu, Jia-Ren

    Pain medicine (Malden, Mass.)

    2011  Volume 12, Issue 12, Page(s) 1777–1783

    Abstract: Unlabelled: Capsaicin, as a principle active component of Chili peppers, is popularly consumed by many people around the world. Whether capsaicin-induced neuropathy alters the function of sensory neurons is still unknown.: Objective:   The objectives ...

    Abstract Unlabelled: Capsaicin, as a principle active component of Chili peppers, is popularly consumed by many people around the world. Whether capsaicin-induced neuropathy alters the function of sensory neurons is still unknown.
    Objective:   The objectives of this study were to determine the effects of epidural capsaicin on nociceptive threshold and neurological functions in a rabbit model.
    Design:   An intrathecal injection system was set up using a rabbit model. Rabbits were treated with capsaicin at doses of 0.04, 0.10, and 0.20 mg/kg once. The changes in neurological functions and morphology of the spinal cord and spinal nerve roots were determined within 24 hours. Changes in the nociceptive threshold in the hind limbs of the rabbits were observed for 30 days.
    Methods:   Capsaicin's effect on the changing neurological functions was evaluated by the neurological functional scores. The structural changes of spinal cord and spinal nerve roots were observed by hematoxylin and eosin staining and transmission electron microscopy. The nociceptive threshold changes in the rabbits were measured by the responding time for pain induced by a thermostimulation.
    Results:   The results showed that capsaicin reversed changes in the neurological function of rabbit hindlimbs. In the 0.10 and 0.20 mg/kg groups, structural abnormalities were found in the rabbit's spinal nerves. Capsaicin also significantly increased the pain threshold in rabbits when compared with the control group (P < 0.05 or P < 0.01). The maximum values of pain threshold were found in the 0.10 mg/kg capsaicin group after 3 days of capsaicin treatment.
    Conclusion:   With the exception of a potential toxicity, capsaicin may be a potential candidate agent for providing pain relief of both neuropathic and nociceptive conditions.
    MeSH term(s) Animals ; Capsaicin/administration & dosage ; Capsaicin/pharmacology ; Hindlimb/innervation ; Humans ; Injections, Spinal ; Male ; Neurons/drug effects ; Neurons/pathology ; Neurons/ultrastructure ; Pain Threshold/drug effects ; Rabbits ; Sensory System Agents/administration & dosage ; Sensory System Agents/pharmacology ; Spinal Cord/cytology ; Spinal Cord/drug effects ; Spinal Cord/pathology ; Spinal Nerve Roots/drug effects ; Spinal Nerve Roots/pathology ; Spinal Nerve Roots/ultrastructure
    Chemical Substances Sensory System Agents ; Capsaicin (S07O44R1ZM)
    Language English
    Publishing date 2011-12
    Publishing country England
    Document type Journal Article
    ZDB-ID 2015903-1
    ISSN 1526-4637 ; 1526-2375
    ISSN (online) 1526-4637
    ISSN 1526-2375
    DOI 10.1111/j.1526-4637.2011.01265.x
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    Zs.A 6119: Show issues Location:
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