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  • SAGE Publications  (6)
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  • SAGE Publications  (6)
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  • 1
    Online Resource
    Online Resource
    SAGE Publications ; 2016
    In:  Progress in Reaction Kinetics and Mechanism Vol. 41, No. 3 ( 2016-09), p. 258-267
    In: Progress in Reaction Kinetics and Mechanism, SAGE Publications, Vol. 41, No. 3 ( 2016-09), p. 258-267
    Abstract: A series of bimetal La- and Ni-promoted S 2 O 8 2– /ZrO 2 –Al 2 O 3 (SZA) catalysts were prepared at different calcination temperatures. The effect of calcination temperature on the characteristics and performance of La-Ni-S 2 O 8 2– /ZrO 2 –Al 2 O 3 (La-Ni-SZA) catalysts towards the n-pentane isomerisation reaction was determined. In order to relate the catalytic activity to their physical, chemical and textural features, the catalysts were characterised by various techniques including X-ray powder diffraction, thermogravimetric-differential thermal analysis, Fourier transform infrared spectroscopy (FTIR), FTIR spectra of adsorbed pyridine and BET specific surface area and H 2 temperature-programmed reduction analyses. The results showed that tetragonal ZrO 2 was the dominant phase in the calcination temperature range of 600–700 °C. The change of textural features of the catalysts results from transformation of the ZrO 2 crystal phase and the collapse of the partial pore structure occurs at the high calcination temperature of 700 °C. The sulfur could be lost at calcination temperatures 〉 660 °C. The total acidity of the catalysts at a desorption temperature of 350 °C decreases in the order: La-Ni-SZA-650 〉 La-Ni-SZA-600 〉 La-Ni-SZA-700 〉 La-Ni-SZA-550. The La-Ni-SZA catalyst calcined at 650 °C had more tetragonal phase ZrO 2 , higher acidity, higher sulfur content, a larger BET surface area and exhibited the best catalytic performance, with the isopentane yield reaching a maximum 66.5% at a lower reaction temperature of 150 °C, with a selectivity to isopentane of 98.5%.
    Type of Medium: Online Resource
    ISSN: 1468-6783 , 1471-406X
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2016
    detail.hit.zdb_id: 2018085-8
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  • 2
    Online Resource
    Online Resource
    SAGE Publications ; 2016
    In:  Progress in Reaction Kinetics and Mechanism Vol. 41, No. 4 ( 2016-11), p. 356-364
    In: Progress in Reaction Kinetics and Mechanism, SAGE Publications, Vol. 41, No. 4 ( 2016-11), p. 356-364
    Abstract: Bifunctional Ni-S 2 O 8 2– /ZrO 2 –Al 2 O 3 (Ni-SSZA) solid superacid catalysts were prepared by microemulsion (Ni-SSZA-M) and impregnation (Ni-SSZA-I) methods and their performance for n-pentane isomerisation was studied. The catalysts were characterised by BET, XPS, XRD, FTIR, Py–FTIR, TPR, TEM and CO uptake. The results show that, compared with the Ni-SSZA-I catalyst, the Ni-SSZA-M catalyst shows smaller and more uniform Ni particles, higher surface area, smaller crystallite size of tetragonal ZrO 2 , more metal active sites and stronger acidity. The activity test indicated that loading Ni by the microemulsion method can significantly improve the isomerisation activity of the catalyst at lower reaction temperatures. In comparison with the Ni-SSZA-I catalyst, the isopentane yield for Ni-SSZA-M was improved by 11.6% and the optimum temperature was decreased by 60 °C.
    Type of Medium: Online Resource
    ISSN: 1468-6783 , 1471-406X
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2016
    detail.hit.zdb_id: 2018085-8
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  • 3
    In: Therapeutic Advances in Medical Oncology, SAGE Publications, Vol. 12 ( 2020-01), p. 175883592097084-
    Abstract: Urothelial carcinoma (UC) is a common malignancy of the lower and upper urinary tract. Recurrent UC has poor prognosis due to delayed diagnosis and a lack of clinical management guidance, especially for upper urinary tract UC. Patients with germline or somatic BRCA1/2 mutations are a special population in UC. No evidence is available so far on the effectiveness of poly ADP-ribose polymerase inhibitor (PARPi) in this population. Here, we report a 60-year-old female patient diagnosed with left ureter high-grade UC. Recurrent lesions were found 20 months after radical surgery. Computed tomography (CT) examination showed a slightly high-density soft tissue mass (3.2 × 3.1 cm) on the left posterior wall of the abdomen (waist), soft tissue mass adjacent to the left inner wall of the pelvis (3.2 × 4.2 cm), and multiple enlarged lymph nodes to the left of abdominal aorta. A next-generation sequencing (NGS)-based 605-gene panel detected a novel BRCA2 pathogenic germline mutation c.1670T 〉 A (p.L557*), and a series of somatic insertion and deletion (INDEL) mutations of BRCA1, RB1, and JAK2, and single nucleotide variation (SNV) mutations of TP53, KMT2D, MET, ROS1, and IL7R. The above lesions were reduced significantly or disappeared (partial response, PR) after a 3-month Olaparib treatment, and the patient’s general condition remained well. In conclusion, this study proved for the first time that PARPi was effective for UC treatment in patients carrying germline BRCA2 pathogenic mutations, providing new treatment options for such patients. In addition, the circulating tumor DNA (ctDNA) test can be used for drug selection and response monitoring in UC treatment.
    Type of Medium: Online Resource
    ISSN: 1758-8359 , 1758-8359
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2020
    detail.hit.zdb_id: 2503443-1
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  • 4
    Online Resource
    Online Resource
    SAGE Publications ; 2020
    In:  Progress in Reaction Kinetics and Mechanism Vol. 45 ( 2020-01), p. 146867831989772-
    In: Progress in Reaction Kinetics and Mechanism, SAGE Publications, Vol. 45 ( 2020-01), p. 146867831989772-
    Abstract: La–Ni–S 2 O 8 2– /ZrO 2 –Al 2 O 3 catalysts were successfully prepared by two different methods of sulfate impregnation, and the physico-chemical properties of the catalysts were characterized by X-ray diffraction, Brunauer–Emmett–Teller analysis, Fourier transform infrared spectroscopy, pyridine adsorption–infrared spectroscopy, and X-ray photoelectron spectroscopy techniques. Catalytic activities were evaluated in a fixed-bed flow reactor using n-pentane isomerization as the probe reaction. Compared with catalyst La–Ni–S 2 O 8 2– /ZrO 2 –Al 2 O 3 -I, prepared by the traditional impregnation method, the catalyst La–Ni–S 2 O 8 2– /ZrO 2 –Al 2 O 3 -W, prepared by the incipient-wetness impregnation method, possessed higher pore volume, pore size, sulfur content, and stronger Brønsted acid sites. The catalytic activity for La–Ni–S 2 O 8 2– /ZrO 2 –Al 2 O 3 -W was maintained at around 56% within 3000 min with an isopentane selectivity of 88% which showed much greater stability than that of La–Ni–S 2 O 8 2– /ZrO 2 –Al 2 O 3 -I. This can be attributed to the fact that (1) the large pore size and pore volume of La–Ni–S 2 O 8 2– /ZrO 2 –Al 2 O 3 -W can largely suppress carbon deposition and (2) the more numerous and stronger Brønsted acid sites for La–Ni–S 2 O 8 2– /ZrO 2 –Al 2 O 3 -W guaranteed to provide enough acid sites for isomerization during the reaction process.
    Type of Medium: Online Resource
    ISSN: 1468-6783 , 1471-406X
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2020
    detail.hit.zdb_id: 2018085-8
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  • 5
    Online Resource
    Online Resource
    SAGE Publications ; 2020
    In:  Therapeutic Advances in Medical Oncology Vol. 12 ( 2020-01), p. 175883592096296-
    In: Therapeutic Advances in Medical Oncology, SAGE Publications, Vol. 12 ( 2020-01), p. 175883592096296-
    Abstract: The early detection of digestive cancers and precancerous diseases remains a significant challenge. This study aimed to investigate the performance of the blood methylated SEPT9 ( mSEPT9) assay, and the combination of this assay with serum protein markers, in hospital-based opportunistic screening strategies for digestive cancers. Methods: Opportunistic screening was performed in the participating hospitals on outpatients and inpatients who met specific inclusion criteria. We recruited a total of 2030 subjects, including 764 cancer patients [291 colorectal cancer (CRC), 239 gastric cancer (GC), 106 esophageal cancer (EC), and 128 hepatocellular carcinoma (HCC)], 423 subjects with precancerous diseases, and 843 normal subjects. All samples were transported to an authenticated clinical laboratory where the mSEPT9 tests were performed. Results: When used separately, the mSEPT9 detected CRC, GC, EC, and HCC, with a sensitivity of 76.6% [area under the receiver operating characteristic curve (AUC) = 0.86)], 47.7% (AUC = 0.76), 42.6% (AUC = 0.69), and 76.7% (AUC = 0.85) and a specificity of 94.6%, 92.3%, 92.5%, and 87.7%, respectively. The mSEPT9 assay also had potent ability to discriminate cancer from non-cancer subjects. The combination of mSEPT9 with CEA, CA724, SNCG, or AFP significantly enhanced the sensitivity for CRC, GC, EC, and HCC to 86.4% (AUC = 0.99, specificity = 92.8%), 63.6% (AUC = 0.86, specificity = 91.1%), 71.3% (AUC = 0.81, specificity = 82.1%), and 83.3% (AUC = 0.93, specificity = 85.1%), respectively. The performance of the mSEPT9 assay was influenced by cancer stage, patient age, pathological types, and the location of cancer. We also identified that mSEPT9 was an independent risk factor and was a valuable predictor for the long-term survival of digestive cancer patients, with a hazard rat io of 2.84, 2.07, 1.88, and 2.45, for CRC, GC, EC, and HCC, respectively. Conclusion: The blood mSEPT9 assay, whether used alone or in combination with serum protein markers, is effective for the opportunistic screening of digestive cancers. Furthermore, mSEPT9 is an independent risk factor and a predictive marker for the long-term survival of digestive cancer patients.
    Type of Medium: Online Resource
    ISSN: 1758-8359 , 1758-8359
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2020
    detail.hit.zdb_id: 2503443-1
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  • 6
    In: Technology in Cancer Research & Treatment, SAGE Publications, Vol. 17 ( 2018-01), p. 153303381879179-
    Type of Medium: Online Resource
    ISSN: 1533-0346 , 1533-0338
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2018
    detail.hit.zdb_id: 2146365-7
    detail.hit.zdb_id: 2220436-2
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