GLORIA

GEOMAR Library Ocean Research Information Access

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    In: Small, Wiley, Vol. 19, No. 11 ( 2023-03)
    Abstract: All‐inorganic perovskite CsPbI 3 contains no volatile organic components and is a thermally stable photoactive material for wide‐bandgap perovskite solar cells (PSCs); however, CsPbI 3 readily undergoes undesirable phase transitions due to the hygroscopic nature of the ionic dopants used in commonly used hole transport materials. In the current study, the popular donor material PM6 in organic solar cells is used as a hole transport layer (HTL). The benzodithiophene‐based backbone‐conjugated polymer requires no dopant and leads to a higher power conversion efficiency (PCE) than 2,2′,7,7′‐tetrakis[N,N‐di(4‐methoxyphenyl)amino]‐9,9′‐spirobifluorene (Spiro‐OMeTAD). Moreover, PM6 also shows priorities in hole mobility, hydrophobicity, cascade energy level alignment, and even defect passivation of perovskite films. With PM6 as the dopant‐free HTL, the PSCs achieve a champion PCE of 18.27% with a competitive fill factor of 82.8%. Notably, the present PCE is based on the dopant‐free HTL in CsPbI 3 PSCs reported thus far. The PSCs with PM6 as the HTL retain over 90% of the initial PCE stored in a glovebox filled with N 2 for 3000 h. In contrast, the PSCs with Spiro‐OMeTAD as the HTL maintain ≈80% of the initial PCE under the same conditions.
    Type of Medium: Online Resource
    ISSN: 1613-6810 , 1613-6829
    URL: Issue
    Language: English
    Publisher: Wiley
    Publication Date: 2023
    detail.hit.zdb_id: 2168935-0
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 2
    Online Resource
    Online Resource
    MDPI AG ; 2023
    In:  Polymers Vol. 15, No. 19 ( 2023-09-28), p. 3911-
    In: Polymers, MDPI AG, Vol. 15, No. 19 ( 2023-09-28), p. 3911-
    Abstract: The stability and durability of perovskite solar cells (PSCs) are two main challenges retarding their industrial commercialization. The encapsulation of PSCs is a critical process that improves the stability of PSC devices for practical applications, and intrinsic stability improvement relies on materials optimization. Among all encapsulation materials, UV-curable resins are promising materials for PSC encapsulation due to their short curing time, low shrinkage, and good adhesion to various substrates. In this review, the requirements for PSC encapsulation materials and the advantages of UV-curable resins are firstly critically assessed based on a discussion of the PSC degradation mechanism. Recent advances in improving the encapsulation performance are reviewed from the perspectives of molecular modification, encapsulation materials, and corresponding architecture design while highlighting excellent representative works. Finally, the concluding remarks summarize promising research directions and remaining challenges for the use of UV-curable resins in encapsulation. Potential solutions to current challenges are proposed to inspire future work devoted to transitioning PSCs from the lab to practical application.
    Type of Medium: Online Resource
    ISSN: 2073-4360
    Language: English
    Publisher: MDPI AG
    Publication Date: 2023
    detail.hit.zdb_id: 2527146-5
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 3
    In: Blood, American Society of Hematology, Vol. 120, No. 21 ( 2012-11-16), p. 4943-4943
    Abstract: Abstract 4943 Myelodysplastic syndromes(MDS) are a heterogeneous group of myeloid neoplasms characterized by cytopenia, dysplasia in one or more cell lines, ineffective haematopoiesis, and increased risk of development of acute myeloid leukemias(AML). The precise mechanism of onset and evolution of MDS has not been clarified. Recently, the ten-eleven translocation 2 (TET2) gene has been found mutated in 15–26% of MDS and AML. The TET2 paralog TET1 catalyzes the conversion of 5-methylcytosine to 5-hydroxymethylcytosine; TET2 shares a homologous domain thought to catalyze this conversion, and is hypothesized to act as a tumor suppressor gene by regulating DNA methylation and epigenetic control of gene expression at critical loci important for myelopoiesis and leukemogenesis. Moreover, the hypomethylating agents 5-azacytidine and decitabine, have demonstrated good perspective in the treatment of high-risk MDS, but their effects might be limited to some patients. Given the effect of TET2 in epigenetic regulation, it is supposed that the status of TET2 gene mutation affect the therapeutic effect of hypomethylating agents related above. Hence, the aim of this study was to determine the clinical characteristics of Chinese patients with TET2 mutations and the vitro effect of 5-azacytidine and decitabine on CD34+Lin−bone marrow cells from patients with or without TET2 gene mutation in MDS and AML with previous history of MDS(AML-MDS). In our study, the entire coding sequence of the TET2 gene (exons 3 to 11) were sequenced. DNA for detection of mutations were from PB or BM samples of 17 MDS(RA 1, RARS 1, RCMD 4, RAEB-1 7 and RAEB-2 4) and 8 AML-MDS patients in our hospital. Among the patients, there were 19 males and 6 females. The median age was 59(46∼83) year old. Cytogenetic analysis was proceeded in 16 patients and abnormal karyotypes were detected in 7 patients. According to IPSS, cytogenetics was favorable in 9, intermediate in 3, unfavorable in 4. All patients were found with one or more TET2 mutation, including 20 frameshift and 57 point mutations. Except 2 mutations in exon 9 and 1 in exon7, others were all in exon 3 or 11. Only 9 mutations were homozygous and others were heterozygous. Both homozygous and heterozygous TET2 mutations were found, suggesting that the presence of wild type allele or residual activity is not protective. A large proportion of frameshift mutations caused stop codons resulting in loss of function while missense mutations may lead to decreased function. In addition, CD34+Lin-bone marrow cells from 4 AML-MDS patients were sorted with immune magnetic beads from MACS and cultured with StemSpan SFEM supplemented of StemSpan CC100. Decitabine and 5-azacytidine were respectively employed with concentration of 0. 1, 0. 25, 0. 50μM for 12h, 24h, 48h, and 72h. Cell proliferation was inhibited and apoptosis was induced by both drugs. Three AML-MDS patients had previously been treated with decitabine and LD AraC for 1 to 3 cycles. More observation is needed to evaluate if presence of TET2 mutation represent a negative predictor of response to demethylating agents. In conclusion, our preliminary data showed that high proportion of Chinese MDS and AML-MDS patients carried TET2 mutation, of which most showed heterozygous status and involved exon 3 or 11. Decitabine and 5-azacytidine might have effects on CD34+Lin− bone marrow cells from AML-MDS patients in vitro. Disclosures: No relevant conflicts of interest to declare.
    Type of Medium: Online Resource
    ISSN: 0006-4971 , 1528-0020
    RVK:
    RVK:
    Language: English
    Publisher: American Society of Hematology
    Publication Date: 2012
    detail.hit.zdb_id: 1468538-3
    detail.hit.zdb_id: 80069-7
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 4
    In: BMC Women's Health, Springer Science and Business Media LLC, Vol. 23, No. 1 ( 2023-04-28)
    Abstract: It has been more than 2 years since the 2019 novel coronavirus disease (COVID-19) pandemic destabilized the world, adversely affecting not only physical health, but also mental health. During this time, frontline medical workers were at a greater health risk, especially female medical workers. Changes or abnormalities in the menstrual cycle—an important indicator of women’s health—may jeopardize female reproductive functioning. Considering that emotional health and sleep status may be related to the menstrual cycle, this study aimed to investigate the association between menstrual cycle changes, anxiety, sleep dysfunction, and other factors among female medical workers during the COVID-19 pandemic. Methods A cross-sectional survey was conducted by distributing online questionnaires to female medical workers in China from February to May 2022. The study included 160 women aged 18–45 years old. The questionnaires covered data related to the participants’ sociodemographic characteristics, medical and reproductive history, and lifestyle. The Rating Scale for Clinical Manifestations of Menopathy (SCMM), Self-Rating Anxiety Scale (SAS), and Sleep Dysfunction Rating Scale (SDRS) were utilized. Data were analyzed using chi-square tests, t-tests, and linear regression analysis. Results A total of 160 female medical staff were randomly selected in this research, of whom seven scored less than 3 points, 85 scored 3–11 points, and 68 scored more than 11 points on the total score of the SCMM. Compared to pre-pandemic scores, scores of dizziness and tinnitus were significantly higher during the COVID-19 pandemic. Scores corresponding to the following clinical symptoms were also higher during the pandemic: Menopathy, including hypaphrodisia, dim complexion, abnormal urination, languidness, dim menstruation, thin menstruation, dysmenorrhea, and empty or saggy lower abdomen (p  〈  0.05). However, pre-pandemic scores of vaginal bleeding quantity were significantly higher than those found during the COVID-19 pandemic (p  〈  0.05). Scores of vaginal bleeding quantity were significantly lower in cabin hospitals than other types of hospitals, and a similar finding was observed for vaginal bleeding duration (all p  〈  0.05). Moreover, the findings of the univariable and multivariable linear regression analysis revealed a link between consistent exercise, the underlying illness, the SDRS score, the SAS score, and the total score of SCMM (p  〈  0.05). Conclusions In this study, we found that menstruation in female medical workers was affected by the COVID-19 pandemic. Furthermore, regular exercise and good physical condition were protective factors, while anxiety and insomnia were risk factors for menstrual abnormalities.
    Type of Medium: Online Resource
    ISSN: 1472-6874
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2023
    detail.hit.zdb_id: 2050444-5
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 5
    In: Advanced Materials Technologies, Wiley, Vol. 8, No. 15 ( 2023-08)
    Type of Medium: Online Resource
    ISSN: 2365-709X , 2365-709X
    URL: Issue
    Language: English
    Publisher: Wiley
    Publication Date: 2023
    detail.hit.zdb_id: 2850995-X
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 6
    Online Resource
    Online Resource
    Springer Science and Business Media LLC ; 2016
    In:  Journal of Molecular Medicine Vol. 94, No. 11 ( 2016-11), p. 1267-1279
    In: Journal of Molecular Medicine, Springer Science and Business Media LLC, Vol. 94, No. 11 ( 2016-11), p. 1267-1279
    Type of Medium: Online Resource
    ISSN: 0946-2716 , 1432-1440
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2016
    detail.hit.zdb_id: 1462132-0
    SSG: 12
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 7
    Online Resource
    Online Resource
    Royal Society of Chemistry (RSC) ; 2023
    In:  Journal of Materials Chemistry A Vol. 11, No. 7 ( 2023), p. 3599-3607
    In: Journal of Materials Chemistry A, Royal Society of Chemistry (RSC), Vol. 11, No. 7 ( 2023), p. 3599-3607
    Abstract: The quality of perovskite films is influenced by the crystal growth process and determines the performance and stability of perovskite solar cells. The incongruous atomic dispersion of nucleation during the crystallization process is one of the main causes of the degradation of the performance and stability of perovskite solar cells. In this study, we employed nucleus-induced epitaxial growth to improve the quality of perovskite films. In doing so, δ-FAPbI 3 was introduced into a PbI 2 precursor solution to induce the epitaxial growth of perovskite using the δ-phase lattice. Perovskite films prepared by this method displayed uniform and densely packed grains, which exhibited a lower trap density and suppressed nonradiative charge recombination. A power conversion efficiency as high as 23.16% was achieved under optimized conditions. More importantly, the unencapsulated devices maintained more than 90% of the initial power conversion efficiency after being stored in a glovebox filled with N 2 for 3200 h, showing very good stability.
    Type of Medium: Online Resource
    ISSN: 2050-7488 , 2050-7496
    Language: English
    Publisher: Royal Society of Chemistry (RSC)
    Publication Date: 2023
    detail.hit.zdb_id: 2702232-8
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 8
    In: Journal of Materials Chemistry C, Royal Society of Chemistry (RSC), Vol. 10, No. 48 ( 2022), p. 18303-18311
    Abstract: The defects at the surface and grain boundary of perovskite films are detrimental to constructing highly stable and efficient perovskite solar cells (Pero-SCs). Here, we propose a facile additive-associated antisolvent engineering (AAE) method to acquire high-quality perovskite films. The additives and antisolvent adopt in the current study are zwitterionic taurine and chlorobenzene. It has been proven that the AAE method can slow down the nucleation process during thermal annealing and consequently passivate the defects of perovskite films via coordination and hydrogen bonding. After being treated with AAE, the champion power conversion efficiency of p–i–n Pero-SCs based on Cs 0.05 (FA 0.92 MA 0.08 ) 0.95 Pb(I 0.92 Br 0.08 ) 3 is improved from 19.73% to 22.54%. Concomitantly, the device stability is also improved. Being stored in a glovebox filled with N 2 , the unencapsulated Pero-SCs treated with AAE maintain 80% and 94% of the initial PCEs in 2500 h at 70 °C and in 3200 h at room temperature, respectively.
    Type of Medium: Online Resource
    ISSN: 2050-7526 , 2050-7534
    Language: English
    Publisher: Royal Society of Chemistry (RSC)
    Publication Date: 2022
    detail.hit.zdb_id: 2702245-6
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 9
    Online Resource
    Online Resource
    SAGE Publications ; 2020
    In:  Journal of International Medical Research Vol. 48, No. 12 ( 2020-12), p. 030006052097222-
    In: Journal of International Medical Research, SAGE Publications, Vol. 48, No. 12 ( 2020-12), p. 030006052097222-
    Abstract: The activation of hepatic stellate cells (HSCs) is a key event in schistosome-induced liver fibrosis. Previous studies have shown that soluble egg antigens and the recombinant P40 protein from Schistosoma japonicum eggs inhibit HSC activation. In the present study, we observed the direct effect of the S. japonicum recombinant (r)SjE16 protein on HSCs. Methods The sequence of SjE16 was analyzed by bioinformatics. Then western blotting, quantitative PCR, and MTT assays were performed to observe the effects of rSjE16 on HSCs. Results The SjE16 protein has no signal peptide or transmembrane region. rSjE16 significantly inhibited expression levels of α-smooth muscle actin and collagen I protein in LX-2 cells. rSjE16 also significantly increased the expression levels of interleukin (IL)-6 and IL-8, and enhanced the expression of matrix metalloproteinase (MMP)-2, MMP-9, and peroxisome proliferator-activated receptor-γ in LX-2 cells. LX-2 cell viability was not inhibited by rSjE16. Conclusion rSjE16 may be involved in the progression of HSC activation via a complex molecular mechanism, which requires further study to fully understand.
    Type of Medium: Online Resource
    ISSN: 0300-0605 , 1473-2300
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2020
    detail.hit.zdb_id: 2082422-1
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 10
    In: Clinical Cancer Research, American Association for Cancer Research (AACR), Vol. 29, No. 4 ( 2023-02-16), p. 764-774
    Abstract: We investigated the safety and preliminary efficacy of anti–PD-L1 antibody (ZKAB001) as maintenance therapy for localized patients with high-grade osteosarcoma to reduce the risk of recurrence and metastasis. Patients and Methods: This open-label Phase I/II study was divided into dose-escalation Phase I and expansion Phase II. Phase I used a 3+3 design with ZKAB001 at three escalating doses ranging: 5, 10, 15 mg/kg every 2 weeks in 9 patients with localized high-grade osteosarcoma and Phase II tested 10 mg/kg in 12 patients for up to 24 cycles. Primary endpoints were safety and tolerability assessed using CTCAE4.0.3. Results: Between October 2018 and 2019, 21 eligible patients were enrolled and accepted ZKAB001 treatment: 9 in the dose-escalation phase, and 12 in expansion phase. Six patients with disease progression withdrew from this study and follow-up is ongoing. The MTD was not defined in Phase I. All doses had a manageable safety profile. The recommended dose in Phase II was set at 10 mg/kg. Most frequent immune-related adverse events were thyroiditis (76.2%) and dermatitis (42.9%). Only 1 (4.8%) of 21 patients had a Grade 3 skin rash. The median 3-year event-free survival (EFS) and overall survival (OS) were not established; however, 24-month EFS was 71.4% (95% confidence interval, 47.2–86.0) and 2-year OS was 100%. Preliminary efficacy data showed EFS benefits in patients with PD-L1 positive or an MSI-H sub-population. Conclusions: Switching to maintenance using ZKAB001 showed an acceptable safety profile and provided preliminary evidence of clinical activity in localized patients with osteosarcoma.
    Type of Medium: Online Resource
    ISSN: 1078-0432 , 1557-3265
    RVK:
    Language: English
    Publisher: American Association for Cancer Research (AACR)
    Publication Date: 2023
    detail.hit.zdb_id: 1225457-5
    detail.hit.zdb_id: 2036787-9
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...